DBQ/DVQ Series www.murata-ps.com 420W Digital Fully Regulated Intermediate DC-DC Bus Converter Output (V) O Current (A) Input (Vdc) 3.3 5 12 60 60 35 36-75 Typical units FEATURES PRODUCT O OVERVIEW Advanced Bus Converter industry standard quarter-brick with digital PMBus interface Murata Power Solutions is introducing the first in a series of digitally controlled DC-DC converters that are based on a 32-bit ARM processor. The DBQ series provides a fully regulated, digitally controlled DC output in a 1/4-brick format that will support the evolving Advanced Bus Converter (ABC) industry standard footprint for isolated board mounted power modules. The DBQ series supports advances in power conversion technology including a digital interface supporting the PMBus protocol for communications to power modules. The DBQ series also incorporates a "droop" load sharing option that allows connecting two or more Optional standard five pin quarter-brick High efficiency, 95.2% (typ) Superior thermal performance Fast dynamic response 2% Vout setting accuracy 2250Vdc input to output isolation voltage (functional) Optional baseplate (B option) PMBusTM Revision 1.2 compliant units together in parallel for demanding powerhungry applications or to provide redundancy in high reliability applications. The converter also offers high input to output isolation of 2250 VDC as required for Power over Ethernet (PoE) applications. The DBQ series is suitable for applications covering MicroTCA, servers and storage applications, networking equipment, telecommunications equipment, Power over Ethernet (PoE), fan trays, wireless networks, wireless pre-amplifiers, and industrial and test equipment, along with other applications requiring a regulated 12V. Voltage droop load sharing for parallel operation Certified to UL/EN/IEC 60950-1, CAN/CSA-C22.2 No. 60950-1, 2nd Edition, safety approvals and EN55022/CISPR22 standards Power Management (PMBus Options) Applications Configurable soft-start/stop Distributed power architectures Configurable output voltage (Vout) and voltage margins (Margin low and Margin high) Intermediate bus voltage applications Configurable protection limits for OVP, input over voltage, input under voltage, over current, on/off, and temperature. Network equipment Servers and storage applications Module Status monitor Vout, Iout, Vin, Temp, Power good, and On/Off. System status monitor (Vout, Iout, Vin and Temp over time) For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_DBQ Series.B02 Page 1 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Root Model DBQ0360V2 VOUT (V) Input Efficiency Total Ripple & Noise Regulation (max.) IIN, min. IIN, full IOUT VIN Nom. Range (mVp-p) Power load load (A, max) (V) (V) (W) (mA) (A) Typ. Max. Line (mV) Load (mV) 3.3 60 198 DBQ0260V2 5 60 DBQ0135V2 12 35 DVQ0360V2 3.3 60 Min. Typ. Dimensions (open frame, max.) (inches) (mm) 40 150 20 15 48 36-75 50 4.43 92.0% 93.2% 2.3x1.45x0.48 max. 58.4x36.83x12.19 300 50 150 30 25 48 36-75 50 6.59 93.0% 94.8% 2.3x1.45x0.48 max. 58.4x36.83x12.19 420 100 150 75 45 48 36-75 75 9.19 94% 95.2% 2.3x1.45x0.48 max. 58.4x36.83x12.19 198 40 150 20 15 48 36-75 50 4.43 92.0% 93.2% 2.3x1.45x0.48 max. 58.4x36.83x12.19 DVQ0260V2 5 60 300 50 150 30 25 48 36-75 50 6.59 93.0% 94.8% 2.3x1.45x0.48 max. 58.4x36.83x12.19 DVQ0135V2 12 35 420 100 150 75 45 48 36-75 75 9.19 94% 95.2% 2.3x1.45x0.48 max. 58.4x36.83x12.19 Typical at TA = +25C under nominal line voltage and full-load conditions. All models are specified with external 1F and 10F capacitors in parallel across their output pins. DVQ models do not have the PMBus feature. DIGITAL CONTROL BRICK PART NUMBER FORMAT Description Part Number Structure Product Family D Form Factor Definition and Options X DB = Full Featured Digital Bus converter, DV = NO PMBus, NO Sense & Trim Pins Q Vout Q = Quarter Brick 0 Output Current 1 01 = 12Vout, 02 = 5Vout, 03 = 3.3Vout (Without PMBus Vout cannot be changed) 3 5 Vin Range Max Iout in Amps V Logic 2 V2 = 36-75V N Pin Length N = Negative, P = Positive X Mechanical Configuration 1 = 0.110" (cut), 2 = 0.145"(cut), Omit for standard shown in the mechanical drawings B Load Sharing B = Baseplate, Omit for Open Frame (Standard Configuration) S Specific Customer Configuration S = Load Sharing, Omit for Standard (Standard Configuration) X RoHS X Customer Code, Omit for Standard C RoHS 6/6 Compliant PMBus Configurable Minimum order quantity is required. Samples available with standard pin length only. Note: Some model number combinations may not be available. See website or contact your local Murata sales representative. Part Number Example DBQ0135V2NBSC = Full Featured Digital 1/4 Brick, 12Vout, 35A, 36-75Vin, Negative logic, Baseplate, Load Sharing, RoHS 6/6 compliant EVALUATION BOARD AVAILABLE FROM MURATA POWER SOLUTIONS Part Number Application Note USB Adaptor Part Number GUI Software Application Note MPS-TD001 www.murata-ps.com/data/apnotes/dcan-63.pdf MPS-AD001 www.murata-ps.com/data/apnotes/dcan-63.pdf Contact your local Murata sales representative for ordering details. www.murata-ps.com/support MDC_DBQ Series.B02 Page 2 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0360V2: 3.3V/60A FUNCTIONAL SPECIFICATIONS (VOLTAGE APPLIED TO SCL SDA SMBALERT AND ON/OFF 2, MIN: -0.3V MAX: 3.6V) Conditions ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Isolation Voltage On/Off Remote Control Output Power Output Current Storage Temperature Range Minimum Typical/Nominal 0 100 mS max. duration Input to output Power on, referred to -Vin Current-limited, no damage, short-circuit protected Vin = Zero (no power) 0 0 0 -55 Maximum Units 80 100 2250 13.5 200 60 125 Vdc Vdc Vdc Vdc W A C Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied nor recommended. INPUT Operating voltage range (V2) Start-up threshold Undervoltage shutdown Overvoltage shutdown Overvoltage Recover Internal Filter Type External Input fuse Input current Full Load Conditions Low Line input current Inrush Transient Short Circuit input current No Load input current Shut-Down input currrent(Off, UV, OT) Back Ripple Current (Default, configurable via PMBus) (Default, configurable via PMBus) (Default, configurable via PMBus) (Default, configurable via PMBus) 36 33 31 NA NA Vin = nominal Vin = minimum Vin = 48V. I L E GENERAL and SAFETY Efficiency Vin=48V, full load (V2) Input to output Input to Baseplate Output to Baseplate Isolation Voltage Insulation Safety Rating Isolation Resistance Isolation Capacitance R P 92 75 35 34 NA NA Vdc Vdc Vdc Vdc Vdc 4.43 5.79 TBD 0.05 50 TBD TBD 4.48 5.97 TBD 0.1 100 TBD TBD A A A2-Sec. A mA mA mAp-p 2250 1500 1500 % Vdc Vdc Vdc Y R A N I M Iout = minimum, unit=ON 48 34 32 NA NA Pi 20 A 93.2 functional 10 1000 M pF Certified to UL-60950-1, CSA-C22.2 No.60950-1, IEC/ EN60950-1, 2nd edition Yes Per Telcordia SR-332, Issue 2, Method 1, Class 1, Ground Fixed, Tcase=+25C 1800 Hours x 103 Fixed Frequency Control 150 KHz Variable Frequency Control (Default) NA KHz Safety Calculated MTBF DYNAMIC CHARACTERISTICS Switching Frequency (Configurable via PMBus) Turn On Time (Default, Configurable via PMBus) Vin On to Vout Regulated 45 mS Remote On to Vout Regulated 25 mS Vout Rise Time (Default, Configurable via PMBus) From 0%~100% 20 mS Vout Fall Time of Regulated Off (Default, Configurable via PMBus) From 100%~0% Dynamic Load Response Dynamic Load Peak Deviation 13 mS 50-75-50%, 1A/us,within 1% of Vout TBD TBD Sec same as above TBD TBD mV www.murata-ps.com/support MDC_DBQ Series.B02 Page 3 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0360V2 FUNCTIONAL SPECIFICATIONS (CONT.) Conditions FEATURES and OPTIONS Minimum Typical/Nominal Maximum Units V Remote On/Off Control Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin) "P" suffix: Positive Logic, ON state ON = pin open or external voltage 3.5 13.5 Positive Logic, OFF state OFF = ground pin or external voltage 0 0.8 V 0.2 mA V Control Current open collector/drain 0.1 "N" suffix: Negative Logic, ON state ON = ground pin or external voltage -0.1 0.8 Negative Logic, OFF state OFF = pin open or external voltage 3.5 13.5 V 0.2 mA Control Current open collector/drain 0.1 OUTPUT Total Output Power Output Adjust Range Overvoltage Protection At 100% load, no trim, all conditions 3.27 Configurable via PMBus 2.2 Configurable via PMBus Voltage Droop Default, configurable via PMBus Current N I M Output Current Range 0 Current Limit Inception Short Circuit Current 3.3 3.33 Vdc 3.6 Vdc 4 Vdc 0 m 70 A 1 A Vin = 36-75, Vout = nom., full load 20 mV Iout = min. to max., Vin = nom. 5 Hz- 20 MHz BW, Cout = 1F paralleled with 10F At all outputs 15 mV Hiccup technique, autorecovery within 1% of Vout I L E Short circuit protection method, default response, configurable via PMBus Regulation Line Regulation (V2) R P Maximum Output Capacitance W A 98% of Vnom., after warmup, Configurable via PMBus Short Circuit Duration (remove short for recovery) Ripple and Noise 200 60 No minimum load Short Circuit Temperature Coefficient 198 60 Minimum Load Load Regulation (V2) Y R A 0 Voltage Setting Accuracy 0.4 Output shorted to ground, no damage Continuous Hiccup current limiting Non-latching 40 150 mV pk-pk 0.01 0.02 % of Vnom./C 10,000 F Low ESR Power Good--Negative logic (Configurable via PMBus) Power good high stage voltage 2.4 3.6 Vdc Power good low stage voltage 0 0.4 Vdc 2.5 3 Vdc Vdc Out voltage for power good off triggering Out Voltage for power good on triggering Configurable via PMBus Configurable via PMBus 2 2.6 2.3 2.8 www.murata-ps.com/support MDC_DBQ Series.B02 Page 4 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0360V2 FUNCTIONAL SPECIFICATIONS (CONT.) Conditions PMBus Minimum Typical/Nominal Maximum Units PMBus GENERAL PMBus REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used. 400 kHz Logic high input 2 3.3 Vdc Logic low input 0 0.8 Bus speed Logic high output 2.4 Vdc Vdc Logic low output 0.4 Vdc PMBus ADDRESSING If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBus address = 8x(SA0 value) + (SA1 value). SA0, SA1 value VS resistor connected to GND. 0 2 3 4 5 6 7 N I M PMBus MONITORING ACCURACY VIN_READ -2 VOUT_READ -1 IOUT_READ (> = 10A) IOUT_READ (<10A) -5 I L E TEMP_READ 10 k 22 k 33 k 47 k 68 k 100 k 150 k 220 k Y R A 1 2 % 1 % 5 % -1 1 A 5 5 C DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION) Fault Protection Specifications Output Voltage, Over Voltage protection, OVP VOUT_OV_FAULT_LIMIT, Configurable via PMBus R P Input Voltage, Input Over Voltage Protection VIN_OV_FAULT_LIMIT (Configurable via PMBus) Input Voltage, Input Under Voltage Protection, UVLO VIN_UV_FAULT_LIMIT (Configurable via PMBus) Factory default >VOUT_OV_WARM_LIMIT Restart delay (default, Configurable via PMBus) 500 Factory default NA Over Temperature Protection, OTP OT_FAULT_LIMIT (Configurable via PMBus) V % NA >VIN_OV_WARM_LIMIT V Restart delay (default, Configurable via PMBus) ms Factory default Setpoint accuracy 32 -2 <VIN_UV_WARM_LIMIT <VIN_OV_FAULT_LIMIT Setpoint accuracy (Io) >IOUT_OC_WARN_LIMT 32 V 2 % 75 V 100 -2.5 ms 2.5 70 100 OT_FAULT_LIMIT (factory default) 120 >OT_WARM_LIMIT 0 OTP accuracy (factory default) 5 30 A ms C 150 5 500 % A 75 0 Restart delay (default, Configurable via PMBus) Restart delay (default, Configurable via PMBus) V ms Setpoint accuracy (factory default) IOUT_OC_FAULT_LIMIT (Configurable via PMBus) V 4 3 Restart delay (default, Configurable via PMBus) Over Current Protection, OCP 4 C C ms www.murata-ps.com/support MDC_DBQ Series.B02 Page 5 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0360V2 FUNCTIONAL SPECIFICATIONS (CONT.) Conditions MECHANICAL Minimum Outline Dimensions (open frame) Typical/Nominal Maximum (Please refer to outline drawing) 2.3 x 1.45 x 0.48 LxWxH Outline Dimensions (with baseplate) Units Inches 58.4 x 36.83 x 12.19 mm 2.3 x 1.45 x 0.50 Inches 58.4 x 36.80 x 12.7 mm Weight (open frame) TBD Ounces Weight (with baseplate) TBD Ounces 0.04 & 0.062 Inches 1.016 & 1.575 mm Grams Grams Through Hole Pin Diameter Y R A Digital Interface Pin Diameter 0.02 0.5 Through Hole Pin Material TH Pin Plating Metal and Thickness Copper alloy Nickel subplate Gold overplate ENVIRONMENTAL Operating Ambient Temperature Range with derating -40 N I M Operating Baseplate Temperature -40 Storage Temperature Thermal Protection/Shutdown (with "B" Suffix, default value, Configurable via PMBUS) Vin = Zero (no power) Electromagnetic Interference Conducted, EN55022/CISPR22 Configurable Via PMBus External filter required; see emissions performance test. I L E RoHS rating Notes Typical at TA = +25C under nominal line voltage and full-load conditions. All models are specified with external 1F and 10F capacitors in parallel across their output pins. All values are default, unless otherwise noted. Over-current protection is non-latching with auto recovery (hiccup). R P -55 98.4-299 -inches 4.7-19.6 -inches 85 C 110 C 125 C 120 C B Class RoHS-6 Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. See Operating information section. www.murata-ps.com/support MDC_DBQ Series.B02 Page 6 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE DATA Efficiency vs. Line Voltage and Load Current @ +25C 100 Efficiency (%) 95 90 VIN = 36V VIN = 48V VIN = 75V 85 80 75 70 5 10 15 20 25 30 35 40 45 50 55 Y R A 60 Load Current (A) Maximum Current Temperature Derating with baseplate (Vin = 48V, airflow from Vin to Vout) Maximum Current Temperature Derating with baseplate (Vin = 48V, airflow from Vin- to Vin+) N I M 70 70 60 60 50 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) 40 30 I L E 20 10 0 30 R P 40 50 60 70 Ambient Temperature (C) 80 85 Output Current (Amps) Output Current (Amps) 50 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) 40 30 20 10 0 30 40 50 60 70 80 85 Ambient Temperature (C) www.murata-ps.com/support MDC_DBQ Series.B02 Page 7 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0260V2: 5V/60A FUNCTIONAL SPECIFICATIONS (VOLTAGE APPLIED TO SCL SDA SMBALERT AND ON/OFF 2, MIN: -0.3V MAX: 3.6V) Conditions ABSOLUTE MAXIMUM RATINGS Maximum Units 80 Vdc 100 mS max. duration 100 Vdc Input to output 2250 Vdc 0 13.5 Vdc 0 303 W Current-limited, no damage, short-circuit protected 0 60 A Vin = Zero (no power) -55 125 C Input Voltage, Continuous Minimum Typical/Nominal 0 Input Voltage, Transient Isolation Voltage On/Off Remote Control Power on, referred to -Vin Output Power Output Current Storage Temperature Range Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied nor recommended. INPUT Operating voltage range (V2) 36 Start-up threshold Undervoltage shutdown Overvoltage shutdown Overvoltage Recover (Default, configurable via PMBus) (Default, configurable via PMBus) (Default, configurable via PMBus) (Default, configurable via PMBus) 48 75 Vdc 34 32 NA NA 35 34 NA NA Vdc Vdc Vdc Vdc Y R A 33 31 NA NA Pi Internal Filter Type External Input fuse 20 Input current N I M Full Load Conditions Vin = nominal Low Line input current Vin = minimum Inrush Transient Vin = 48V. Short Circuit input current No Load input current Iout = minimum, unit=ON I L E Shut-Down input currrent(Off, UV, OT) Back Ripple Current GENERAL and SAFETY Efficiency Vin=48V, full load (V2) Isolation Voltage R P Insulation Safety Rating Isolation Resistance Isolation Capacitance 93 A 6.59 6.72 8.77 8.86 A A TBD TBD A2-Sec. 0.05 0.1 A 50 100 mA TBD TBD mA TBD TBD mAp-p 94.8 % Input to output 2250 Vdc Input to Baseplate 1500 Vdc Output to Baseplate 1500 Vdc functional 10 M 1000 pF Certified to UL-60950-1, CSA-C22.2 No.60950-1, IEC/ EN60950-1, 2nd edition Yes Per Telcordia SR-332, Issue 2, Method 1, Class 1, Ground Fixed, Tcase=+25C 1800 Hours x 103 Fixed Frequency Control 150 KHz Variable Frequency Control (Default) NA KHz Safety Calculated MTBF DYNAMIC CHARACTERISTICS Switching Frequency (Configurable via PMBus) Turn On Time (Default, Configurable via PMBus) Vin On to Vout Regulated 45 mS Remote On to Vout Regulated 25 mS Vout Rise Time (Default, Configurable via PMBus) From 0%~100% 20 mS 13 mS Vout Fall Time of Regulated Off (Default, Configurable via PMBus) From 100%~0% Dynamic Load Response Dynamic Load Peak Deviation 50-75-50%, 1A/us,within 1% of Vout TBD TBD Sec same as above TBD TBD mV www.murata-ps.com/support MDC_DBQ Series.B02 Page 8 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0260V2 FUNCTIONAL SPECIFICATIONS (CONT.) Conditions FEATURES and OPTIONS Minimum Typical/Nominal Maximum Units V Remote On/Off Control Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin) "P" suffix: Positive Logic, ON state ON = pin open or external voltage 3.5 13.5 Positive Logic, OFF state OFF = ground pin or external voltage 0 0.8 V 0.2 mA V Control Current open collector/drain 0.1 "N" suffix: Negative Logic, ON state ON = ground pin or external voltage -0.1 0.8 Negative Logic, OFF state OFF = pin open or external voltage 3.5 13.5 V 0.2 mA Control Current open collector/drain 0.1 OUTPUT Total Output Power Output Adjust Range Overvoltage Protection At 100% load, no trim, all conditions 4.95 Configurable via PMBus 3 Configurable via PMBus Voltage Droop Default, configurable via PMBus Current N I M Output Current Range 0 Current Limit Inception Short Circuit Current 5 5.05 Vdc 5.5 Vdc 6 Vdc 0 m 70 A 1 A Vin = 36-75, Vout = nom., full load 30 mV Iout = min. to max., Vin = nom. 5 Hz- 20 MHz BW, Cout = 1F paralleled with 10F At all outputs 25 mV 150 mV pk-pk Hiccup technique, autorecovery within 1% of Vout I L E Line Regulation (V2) R P Maximum Output Capacitance W A 98% of Vnom., after warmup, Configurable via PMBus Short Circuit Duration (remove short for recovery) Short circuit protection method, default response, configurable via PMBus Regulation Temperature Coefficient 303 60 No minimum load Short Circuit Ripple and Noise 300 60 Minimum Load Load Regulation (V2) Y R A 0 Voltage Setting Accuracy 0.4 Output shorted to ground, no damage Continuous Hiccup current limiting Non-latching 50 0.01 Low ESR 0.02 % of Vnom./C 10,000 F Power Good--Negative logic (Configurable via PMBus) Power good high stage voltage 2.4 3.6 Vdc Power good low stage voltage 0 0.4 Vdc 4 4.75 Vdc Vdc Out voltage for power good off triggering Out Voltage for power good on triggering Configurable via PMBus Configurable via PMBus 3 3.75 3.5 4.25 www.murata-ps.com/support MDC_DBQ Series.B02 Page 9 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0260V2 FUNCTIONAL SPECIFICATIONS (CONT.) Conditions PMBus PMBus GENERAL PMBus REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used. Bus speed Logic high input Logic low input Logic high output Logic low output PMBus ADDRESSING Minimum Typical/Nominal 2 0 2.4 Maximum Units 400 3.3 0.8 kHz Vdc Vdc Vdc Vdc 0.4 If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBus address = 8x(SA0 value) + (SA1 value). SA0, SA1 value VS resistor connected to GND. 0 1 2 3 4 5 6 7 PMBus MONITORING ACCURACY VIN_READ VOUT_READ IOUT_READ (> = 10A) IOUT_READ (<10A) TEMP_READ 10 22 33 47 68 100 150 220 DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION) I L E Fault Protection Specifications Output Voltage, Over Voltage protection, OVP VOUT_OV_FAULT_LIMIT, Configurable via PMBus Input Voltage, Input Over Voltage Protection R P VIN_OV_FAULT_LIMIT (Configurable via PMBus) Input Voltage, Input Under Voltage Protection, UVLO VIN_UV_FAULT_LIMIT (Configurable via PMBus) Over Current Protection, OCP IOUT_OC_FAULT_LIMIT (Configurable via PMBus) Over Temperature Protection, OTP OT_FAULT_LIMIT (Configurable via PMBus) Y R A N I M -2 -1 -5 -1 5 Factory default >VOUT_OV_WARM_LIMIT k k k k k k k k 2 1 5 1 5 % % % A C 6 V 6 3 Restart delay (default, Configurable via PMBus) 500 Factory default NA V S V Setpoint accuracy >VIN_OV_WARM_LIMIT % NA V Restart delay (default, Configurable via PMBus) S Factory default Setpoint accuracy 32 -2 2 <VIN_UV_WARM_LIMIT <VIN_OV_FAULT_LIMIT 32 Restart delay (default, Configurable via PMBus) 100 Setpoint accuracy (Io) -2.5 (factory default) >IOUT_OC_WARN_LIMT 75 2.5 0 100 0 120 30 OTP accuracy (factory default) 5 % A S 150 5 500 V A 75 OT_FAULT_LIMIT (factory default) >OT_WARM_LIMIT % S 70 Restart delay (default, Configurable via PMBus) Restart delay (default, Configurable via PMBus) V C C C S www.murata-ps.com/support MDC_DBQ Series.B02 Page 10 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0260V2 FUNCTIONAL SPECIFICATIONS (CONT.) Conditions MECHANICAL Minimum Outline Dimensions (open frame) Typical/Nominal Maximum (Please refer to outline drawing) 2.3 x 1.45 x 0.48 LxWxH Outline Dimensions (with baseplate) Units Inches 58.4 x 36.83 x 12.19 mm 2.3 x 1.45 x 0.50 Inches 58.4 x 36.80 x 12.7 mm Weight (open frame) TBD Ounces Weight (with baseplate) TBD Ounces 0.04 & 0.062 Inches 1.016 & 1.575 mm Grams Grams Through Hole Pin Diameter Y R A Digital Interface Pin Diameter 0.02 0.5 Through Hole Pin Material TH Pin Plating Metal and Thickness Copper alloy Nickel subplate Gold overplate ENVIRONMENTAL Operating Ambient Temperature Range with derating -40 N I M Operating Baseplate Temperature Storage Temperature -40 Thermal Protection/Shutdown (with "B" Suffix, default value, Configurable via PMBUS) Vin = Zero (no power) Electromagnetic Interference Conducted, EN55022/CISPR22 Configurable Via PMBus External filter required; see emissions performance test. I L E RoHS rating Notes Typical at TA = +25C under nominal line voltage and full-load conditions. All models are specified with external 1F and 10F capacitors in parallel across their output pins. All values are default, unless otherwise noted. Over-current protection is non-latching with auto recovery (hiccup). R P -55 98.4-299 -inches 4.7-19.6 -inches 85 C 110 C 125 C 120 C B Class RoHS-6 Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. See Operating information section. www.murata-ps.com/support MDC_DBQ Series.B02 Page 11 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0135V2: 12V/35A FUNCTIONAL SPECIFICATIONS (VOLTAGE APPLIED TO SCL SDA SMBALERT AND ON/OFF 2, MIN: -0.3V MAX: 3.6V) ABSOLUTE MAXIMUM RATINGS Conditions Minimum Typical/Nominal Maximum Units Input Voltage, Continuous 0 80 Vdc Input Voltage, Transient 100 mS max. duration 100 Vdc Isolation Voltage Input to output 2250 Vdc On/Off Remote Control Power on, referred to -Vin 0 13.5 Vdc Output Power 0 428.4 W Output Current Current-limited, no damage, short-circuit protected 0 35 A SCL / SDA / SMBALERT / ON/OFF 2 -0.3 3.6 Vdc Storage Temperature Range Vin = Zero (no power) -55 125 C Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied or recommended. INPUT Operating voltage range (V2) Start-up threshold Undervoltage shutdown Internal Filter Type External Input fuse Input current Full Load Conditions Low Line input current Inrush Transient Short Circuit input current No Load input current Shut-Down input currrent(Off, UV, OT) Back Ripple Current (Default, configurable via PMBus) (Default, configurable via PMBus) Vin = nominal Vin = minimum Vin = 48V. Iout = minimum, unit=ON 36 33 31 48 34 32 Pi 20 75 35 34 Vdc Vdc Vdc 9.19 12.25 1.3 0.05 75 20 20 9.44 12.59 2.6 0.1 112 30 40 A A A2-Sec. A mA mA mAp-p 2250 1500 1500 Vdc Vdc Vdc A GENERAL and SAFETY Isolation Voltage Input to output Input to Baseplate Output to Baseplate Insulation Safety Rating Isolation Resistance Isolation Capacitance Safety Calculated MTBF functional 10 1500 Certified to UL-60950-1, CSA-C22.2 No.60950-1, IEC/ EN60950-1, 2nd edition Per Telcordia SR-332, Issue 2, Method 1, Class 1, Ground Fixed, Tcase=+25C M pF Yes 1800 Hours x 103 175 KHz DYNAMIC CHARACTERISTICS Switching Frequency (Configurable via PMBus) Fixed Frequency Control Turn On Time (Default, Configurable via PMBus) Vin On to Vout Regulated Remote On to Vout Regulated Vout Rise Time (Default, Configurable via PMBus) From 0%~100% Vout Fall Time of Regulated Off (Default, Configurable via PMBus) From 100%~0% Dynamic Load Response 50-75-50%, 0.1A/us,within 1% of Vout Dynamic Load Peak Deviation same as above 60 25 20 20 200 300 mS mS mS 300 500 mS Sec mV www.murata-ps.com/support MDC_DBQ Series.B02 Page 12 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0135V2 FUNCTIONAL SPECIFICATIONS (CONT.) Conditions FEATURES and OPTIONS Minimum Typical/Nominal Remote On/Off Control Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin) "P" suffix: Positive Logic, ON state ON = pin open or external voltage 3.5 Positive Logic, OFF state OFF = ground pin or external voltage 0 Control Current open collector/drain 0.1 "N" suffix: Negative Logic, ON state ON = ground pin or external voltage -0.1 Negative Logic, OFF state OFF = pin open or external voltage 3.5 Control Current open collector/drain 0.1 Secondary On/Off control (Pull up to 3.3V internally; ignored by default configuration; see technical notes section) Voltages referenced to -Vout) "P" suffix: Positive Logic, ON state ON = pin open or external voltage 1.5 Positive Logic, OFF state OFF = ground pin or external voltage 0 Control Current open collector/drain 0.03 "N" suffix: Negative Logic, ON state ON = ground pin or external voltage 0 Negative Logic, OFF state OFF = pin open or external voltage 1.5 Control Current open collector/drain 0.03 Remote Sense Compliance Sense pins connected externally to respective Vout pins Maximum Units 13.5 0.8 0.2 V V mA 0.8 13.5 0.2 V V mA 3.3 0.8 0.06 V V mA 0.8 3.3 0.06 V V mA 428.4 W 12.030 Vdc OUTPUT Total Output Power Voltage Initial Output Voltage (Default, Configurable via PMBus) Output Voltage (Default, Configurable via PMBus) Output Voltage (Default, Configurable via PMBus) Over-Voltage Protection (Default, Configurable via PMBus) Voltage Droop Without "S" suffix With "S" suffix Current Output Current Range Minimum Load 0 @VIN = 48V Iout = 0A temp = 25C, both with/without "S" suffix Current Limit Inception Short Circuit Short Circuit Current Short Circuit Duration (remove short for recovery) Short circuit protection method, default response, configurable via PMBus Regulation Line Regulation (V2) 420 11.990 @All condtions, without "S" suffix, VOUT_DROOP = 0 11.760 12.000 12.240 Vdc @All condtions , with"S" suffix, VOUT_DROOP = 10m (12.000Iout*0.01)*0.98 12.000-Iout*0.01 (12.000Iout*0.01)*1.02 Vdc 13.80 14.40 15.60 Vdc Direct feedback Fault response is configurable via PMBus Default, Configurable via PMBus 0 10 m m 0 35 90% of Vnom., after warmup, Configurable via PMBus No minimum load 42 Hiccup technique, autorecovery within 1% of Vout 0.4 Output shorted to ground, no damage Continuous Hiccup current limiting Non-latching Vin = 36-75, Vout = nom., full load Vin=nom. Load Regulation (V2) Without S suffix: Vout@min_load-Vout@max_load With S suffix: Vout@min_load-Vout@max_load-Iout*VOUT_DROOP 5 Hz- 20 MHz BW, Cout = 1F Ripple and Noise paralleled with 10F Temperature Coefficient At all outputs Maximum Output Capacitance Low ESR Power Good--Negative logic (Configurable via PMBus) Power good high stage voltage Power good low stage voltage Out voltage for power good off triggering Configurable via PMBus Out Voltage for power good on triggering Configurable via PMBus 2.4 0 8.64 9.72 A A 1 A 75 mV 45 mV 100 150 mV pk-pk 0.01 0.02 10,000 % of Vnom./C F 3.6 0.4 10.56 11.88 Vdc Vdc Vdc Vdc 9.6 10.8 www.murata-ps.com/support MDC_DBQ Series.B02 Page 13 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0135V2 FUNCTIONAL SPECIFICATIONS (CONT.) PMBus Conditions Minimum Typical/Nominal Maximum Units PMBus GENERAL PMBus REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used. Bus speed 400 kHz Logic high input 2 3.3 Vdc Logic low input 0 0.8 Vdc Logic high output 2.4 3.6 Vdc Logic low output -0.1 0.4 Vdc PMBus ADDRESSING If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBus address = 8x(SA0 value) + (SA1 value). SA0, SA1 value VS resistor connected to GND. 0 10 k 1 22 k 2 33 k 3 47 k 4 68 k 5 100 k 6 150 k 7 220 k PMBus MONITORING ACCURACY VIN_READ -2.5 2.5 % VOUT_READ -1 1 % IOUT_READ -1 1 A TEMP_READ -5 5 C DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION) Fault Protection Specifications Output Voltage, Over Voltage protection, OVP VOUT_OV_FAULT_LIMIT, Configurable via PMBus VIN_OV_FAULT_LIMIT (Configurable via PMBus) Input Voltage, Input Under Voltage Protection, UVLO Factory default >VOUT_OV_WARM_LIMIT Restart delay (default, Configurable via PMBus) 14.4 8.1 500 >VIN_OV_WARM_LIMIT 34 200 mS Factory default 32 V Setpoint accuracy -2 <VIN_UV_WARM_LIMIT <VIN_OV_FAULT_LIMIT Over Current Protection, OCP Restart delay (default, Configurable via PMBus) Setpoint accuracy (Io) (factory default) -3 >IOUT_OC_WARN_LIMT 0 Over Temperature Protection, OTP OT_FAULT_LIMIT (Configurable via PMBus) Restart delay (default, Configurable via PMBus) OT_FAULT_LIMIT (factory default) >OT_WARM_LIMIT OTP accuracy (factory default) Restart delay (default, Configurable via PMBus) 32 110 V V mS Restart delay (default, Configurable via PMBus) VIN_UV_FAULT_LIMIT (Configurable via PMBus) IOUT_OC_FAULT_LIMIT (Configurable via PMBus) 15.6 2 % 75 V 3 mS % A 50 A 200 42 0 5 500 120 30 500 V 150 5 mS C C C mS www.murata-ps.com/support MDC_DBQ Series.B02 Page 14 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter DBQ0135V2 FUNCTIONAL SPECIFICATIONS (CONT.) MECHANICAL Outline Dimensions (open frame) (Please refer to outline drawing) Outline Dimensions (with baseplate) Conditions Minimum Maximum 2.3 x 1.45 x 0.48 58.4 x 36.83 x 12.19 2.3 x 1.45 x 0.52 58.4 x 36.80 x 13.21 1.85 52.5 2.35 66.8 0.04 & 0.062 1.016 & 1.575 0.020 0.5 Copper alloy 98.4-299 4.7-19.6 LxWxH Weight (open frame) Weight (with baseplate) Through Hole Pin Diameter Digital Interface Pin Diameter Through Hole Pin Material TH Pin Plating Metal and Thickness Typical/Nominal Nickel subplate Gold overplate Units Inches mm Inches mm Ounces Grams Ounces Grams Inches mm -inches -inches ENVIRONMENTAL Operating Ambient Temperature Range Operating Baseplate Temperature Storage Temperature Thermal Protection/Shutdown (with "B" Suffix, default value, Configurable via PMBus) Electromagnetic Interference Conducted, EN55022/CISPR22 RoHS rating Notes with derating Vin = Zero (no power) -40 -40 -55 85 110 125 C C C Configurable Via PMBus 125 C External filter required; see emissions performance test. B Class Typical at TA = +25C under nominal line voltage and full-load conditions. All models are specified with external 1F and 10F capacitors in parallel across their output pins. All values are default, unless otherwise noted. Over-current protection is non-latching with auto recovery (hiccup). RoHS-6 Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. See Operating information section. www.murata-ps.com/support MDC_DBQ Series.B02 Page 15 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE DATA Efficiency vs. Line Voltage and Load Current @ +25C 100 Efficiency (%) 95 VIN = 36V VIN = 48V VIN = 75V 90 85 80 75 70 0 100 200 300 400 Power Out (Watts) Thermal image at 35A current with 48V input voltage, 30C ambient temperature, and 100LFM air flow. Identifiable and recommended maximum value to be verified in application. www.murata-ps.com/support MDC_DBQ Series.B02 Page 16 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE DATA: TEMPERATURE DERATING Open Frame With Baseplate Maximum Current Temperature Derating at sea level (Vin = 36V, airflow from Vin to Vout) Maximum Current Temperature Derating at sea level (Vin = 36V, airflow from Vin to Vout) 33 39 30 36 33 27 30 27 Output Current (Amps) Output Current (Amps) 24 21 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 18 15 12 9 24 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 21 18 15 12 9 6 6 3 3 0 30 35 40 45 50 55 60 65 70 75 80 0 30 85 35 40 45 50 55 60 65 70 75 80 85 80 85 80 85 Ambient Temperature (C) Ambient Temperature (C) Maximum Current Temperature Derating at sea level (Vin = 48V, airflow from Vin to Vout) Maximum Current Temperature Derating at sea level (Vin = 48V, airflow from Vin to Vout) 33 39 30 36 33 27 30 27 Output Current (Amps) Output Current (Amps) 24 21 18 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 15 12 9 24 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 21 18 15 12 9 6 6 3 3 0 30 35 40 45 50 55 60 65 70 75 80 0 30 85 35 40 45 Ambient Temperature (C) 50 55 60 65 70 75 Ambient Temperature (C) Maximum Current Temperature Derating at sea level (Vin = 75V, airflow from Vin to Vout) Maximum Current Temperature Derating at sea level (Vin = 75V, airflow from Vin to Vout) 33 39 30 36 33 27 30 27 Output Current (Amps) Output Current (Amps) 24 21 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 18 15 12 9 24 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 21 18 15 12 9 6 6 3 3 0 30 35 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85 0 30 35 40 45 50 55 60 65 70 75 Ambient Temperature (C) www.murata-ps.com/support MDC_DBQ Series.B02 Page 17 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE DATA Enable Startup Delay (Vin = 48V, Iout = 35A, Cout = 1000uF, Ta = +25C) Ch2 = Vout Ch4 = Enable Startup Delay (Vin = 48V, Iout = 35A, Cout = 1000uF, Ta = +25C) Ch1 = Vin, Ch2 = Vout Stepload Transient Response (Vin = 48V, Iout = 50-75-50% of Iout, Cload = 1uF || 10uF, slew rate: 0.1A/us, Ta = +25C) Output Ripple & Noise (Vin = 48V, Iout = 0A, Cout = 1uF || 10uF, Ta = +25C) Output Ripple & Noise (Vin = 48V, Iout = 35A, Cout = 1uF || 10uF, Ta = +25C) www.murata-ps.com/support MDC_DBQ Series.B02 Page 18 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter 2 4 5 2.30 (58.4) OPEN FRAME M3 THREAD TYP 4PL 0.220 1.860 (47.24) WITH BASEPLATE OPTION SEE NOTE 6 PINS 1,2,4: I0.0400.0015(1.0160.038) Shoulder: I0.0760.005(1.930.13) PINS 5,16: I0.0620.0015(1.5750.038) Shoulder: I0.0980.005(2.490.13) 0.52 Max 14 15 12 13 10 11 8 9 6 7 2.30 (58.4) 1.45 (36.83) 1.030 (26.16) 16 1 0.48 Max 1.45 (36.83) 0.210 MECHANICAL SPECIFICATIONS 0.010 minimum clearance between standoffs and highest component 0.600 (15.24) 0.079 0.315 0.600 (15.24) 2.000 (50.8) PIN SIDE VIEW PINS 1,2,4,: I0.0400.0015(1.0160.038) Shoulder: I0.0760.005(1.930.13) PINS 5,16: I0.0620.0015(1.5750.038) Shoulder: I0.0980.005(2.490.13) 0.010 minimum clearance between standoffs and highest component 2.000 (50.8) SQ.0.02 0.079 PIN SIDE VIEW Pin INPUT/OUTPUT CONNECTIONS Designation Function 1 +VIN Positive Input 2 On/Off 1 Control Primary On/Off Control 3 No Pin No Pin 4 -VIN Negative Input 5 -VOUT Negative Output 6 +S Positive Remote Sense 7 -S Negative Remote Sense 8 SA0 Address Pin 0 9 SA1 Address Pin 1 10 SCL PMBus Clock 11 SDA PMBus Data 12 PG Power Good Output 13 DGND PMBus Ground 14 SMBALERT PMBus Alert Signal 15 On/Off 2 Control Secondary On/Off Control 16 +VOUT Positive Output NOTES: UNLESS OTHERWISE SPECIFIED; 1:M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER SURFACES (SUCH AS HEATSINK) MUST NOT EXCEED 0.100''(2.54mm) DEPTH BELOW THE SURFACE OF BASEPLATE 2:APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb(0.6Nm); 3:ALL DIMENSION ARE IN INCHES[MILIMETER]; 4:ALL TOLERANCES: x.xxin ,0.02in(x.xmm,0.5mm) x.xxxin ,0.01in(x.xxmm,0.25mm) 5:COMPONENT WILL VARY BETWEEN MODELS 6:STANDARD PIN LENGTH: 0.180 Inch FOR L1 PIN LENGTH OPTION IN MODEL NAME, THE L LENGTH SHOULD BE 0.110 INCH FOR L2 PIN LENGTH OPTION IN MODEL NAME., USE STANDARD L2 PIN WITH PIN LENGTH TO 0.145 Inch Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 2 Components are shown for reference only and may vary between units. www.murata-ps.com/support MDC_DBQ Series.B02 Page 19 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter STANDARD PACKAGING 9.92 (251.97) REF 9.92 (251.97) REF Each static dissipative polyethylene foam tray accommodates 15 converters in a 3 x 5 array. 0.88 (22.35) REF 2.75 (69.85) .25 closed height 11.00 (279.4) .25 10.50 (266.7) .25 Carton accommodates two (2) trays yielding 30 converters per carton Dimensions are in inches (mm) shown for ref. only. Third Angle Projection Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 2 www.murata-ps.com/support MDC_DBQ Series.B02 Page 20 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter TECHNICAL NOTES Power Management Overview The module includes a wide range of readable and configurable power management features that are easy to implement with a minimum of external components. Furthermore, the module includes protection features that continuously protect the load from damage due to unexpected system faults. The SMBALERT pin alerts the host if there is a fault in the module. The following product parameters can continuously be monitored by a host: Vout, Iout, Vin, Temperature, and Power Good. The module is distributed with a default configuration suitable for a wide range operation in terms of Vin, Vout, and load. All power management functions can be reconfigured using the PMBus interface. The product provides a PMBus digital interface that enables the user to configure many aspects of the device operation as well as monitor the input and output parameters. Please contact our FAE for special configurations. Soft-start Power Up The default rise time of the ramp up is 20 ms. When starting by applying input voltage the control circuit boot-up time adds an additional 10 ms delay. The soft-start power up of the module can be reconfigured using the PMBus interface. Over Voltage Protection (OVP) The module includes over voltage limiting circuitry for protection of the load. The default OVP limit is 20% above the nominal output voltage. If the output voltage surpasses the OVP limit, the module can respond in different ways. The default response from an over voltage fault is to immediately shut down. The device will continuously check for the presence of the fault condition, and when the fault condition no longer exists the device will be re-enabled. The OVP fault level and fault response can be reconfigured using the PMBus interface. Over Current Protection (OCP, Current limit) The module includes current limiting circuitry for protection at continuous over load. The default setting for the product is hicup mode. The current limit could be configured by simply setting the IOUT_OC_FAULT_LIMIT to be greater than the IOUT_OC_WARN_LIMIT. The maximum value that the current limit could be set is 50A. Power Good The module provides Power Good (PG) flag in the Status Word register that indicates the output voltage is within a specified tolerance of its target level and no fault condition exists. The Power Good pin default logic is negative and it can be configured by MFR_PGOOD_POLARITY. PMBus Interface This module offers a PMBus digital interface that enables the user to configure many characteristics of the device operation as well as to monitor the input and output voltages, output current and device temperature. The module can be used with any standard two-wire I2C or SMBus host device. In addition, the module is compatible with PMBus version 1.2 and includes an SMBALERT line to help alleviate bandwidth limitations related to continuous fault monitoring. The module supports 100 kHz and 400 kHz bus clock frequency only. Monitoring via PMBus A system controller (host device) can monitor a wide variety of parameters through the PMBus interface. The controller can monitor fault conditions by monitoring the SMBALERT pin, which will be asserted when any number of pre-configured fault or warning conditions occur. The system controller can also continuously monitor any number of power conversion parameters including but not limited to the following: * Input voltage * Output voltage * Output current * Module temperature Software Tools for Design and Production For these modules, Murata-PS provides software for configuring and monitoring via the PMBus interface. For more information please contact your local Murata-PS representative. Click here for Application Note AN-63, Digital DC-DC Evaluation Board User Guide. Click here for Application Note AN-64, Murata Power Brick GUI User Manual. www.murata-ps.com/support MDC_DBQ Series.B02 Page 21 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter PMBus Addressing Figure 1 and the accompanying table display the recommended resistor values for hard-wiring PMBus addresses (1% tolerance resistors recommended): The address is set in the form of two octal (0 to 7) digits, with each pin setting one digit. The resistor values for each digit is shown below. The SA0 and SA1 pins can be configured with a resistor to GND according to the following equation. PMBus Address = 8 x (SA0value) + (SA1 value) C0 and C1 are 4.7nF capacitors, which are recommended for correct addressing. If the calculated PMBus address is 0d, 11d or 12d, PMBus address 119d is assigned instead. From a system point of view, the user shall also be aware of further limitations of the addresses as stated in the PMBus Specification. It is not recommended to keep the SA0 and SA1 pins left open. SA0 SA1 R1 R0 C0 C1 Figure 1. Schematic of Connection of Address Resistors PMBus Commands The products are designed to be PMBus compliant. The following tables list the implemented PMBus read commands. For more detailed information see "PMBus Power System Management Protocol Specification, Part I - General Requirements, Transport and Electrical Interface" and "PMBus Power System Management Protocol, Part II - Command Language." Digit (SA0, SA1 index) Resistor Value [k] 0 1 2 3 4 5 6 7 10 22 33 47 68 100 150 220 OVERALL CMD Command Name1 01h 02h 03h 10h 11h 12h 15h 16h 19h 20h 21h 22h 25h 26h 28h 40h 41h 42h 46h 47h 4Ah 4Fh 50h 51h 55h 56h 57h 58h 59h 5Ah 5Eh 5Fh OPERATION2 ON_OFF_CONFIG3 CLEAR_FAULTS WRITE_PROTECT STORE_DEFAULT_ALL4 RESTORE_DEFAULT_ALL4 STORE_USER_ALL4 RESTORE_USER_ALL4 CAPABILITY VOUT_MODE VOUT_COMMAND VOUT_TRIM VOUT_MARGIN_HIGH VOUT_MARGIN_LOW VOUT_DROOP VOUT_OV_FAULT_LIMIT VOUT_OV_FAULT_RESPONSE5 VOUT_OV_WARN_LIMIT IOUT_OC_FAULT_LIMIT IOUT_OC_FAULT_RESPONSE6 IOUT_OC_WARN_LIMIT OT_FAULT_LIMIT OT_FAULT_RESPONSE5 OT_WARN_LIMIT VIN_OV_FAULT_LIMIT VIN_OV_FAULT_RESPONSE7 VIN_OV_WARN_LIMIT VIN_UV_WARN_LIMIT VIN_UV_FAULT_LIMIT VIN_UV_FAULT_RESPONSE7 POWER_GOOD_ON POWER_GOOD_OFF SMBus SMBus Number Transaction Type: Transaction Type: Of Data Writing Data Reading Data Bytes Write Byte Write Byte Send byte Write Byte Send byte Send byte Send byte Send byte N/A N/A Write Word Write Word Write Word Write Word Write Word16 Write Word Write Byte Write Word Write Word Write Byte Write Word Write Word Write Byte Write Word Write Word Write Byte Write Word Write Word Write Word Write Byte Write Word Write Word Read Byte Read Byte N/A Read Byte N/A N/A N/A N/A Read Byte Read Byte Read Word Read Word Read Word Read Word Read Word Read Word Read Byte Read Word Read Word Read Byte Read Word Read Word Read Byte Read Word Read Word Read Byte Read Word Read Word Read Word Read Byte Read Word Read Word 1 1 0 1 0 0 0 0 1 1 2 2 2 2 2 2 1 2 2 1 2 2 1 2 2 1 2 2 2 1 2 2 www.murata-ps.com/support MDC_DBQ Series.B02 Page 22 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter OVERALL (CONT.) CMD 60h 61h 64h 65h 78h 79h 7Ah 7Bh 7Ch 7Dh 7Eh 88h 8Bh 8Ch 8Dh 94h 95h 96h 98h 99h 9Ah 9Bh 9Dh 9Eh A0h A1h A2h A3h A4h A5h A6h A7h A8h A9h B0h B1h C0h DBh DDh DEh E8h E9h EAh Command Name1 TON_DELAY TON_RISE14 TOFF_DELAY TOFF_FALL14 STATUS_BYTE STATUS_WORD STATUS_VOUT STATUS_IOUT STATUS_INPUT STATUS_TEMPERATURE STATUS_CML READ_VIN READ_VOUT READ_IOUT READ_TEMPERATURE_18 READ_DUTY_CYCLE READ_FREQUENCY READ_POUT PMBus_REVISION MFR_ID MFR_MODEL9 MFR_REVISION9 MFR_DATE9 MFR_SERIAL9 MFR_VIN_MIN MFR_VIN_MAX MFR_IIN_MAX MFR_PIN_MAX MFR_VOUT_MIN MFR_VOUT_MAX MFR_IOUT_MAX MFR_POUT_MAX MFR_TAMBIENT_MAX MFR_TAMBIENT_MIN USER_DATA_00 USER_DATA_01 MFR_MAX_TEMP_1 MFR_CURRENT_SHARE_CONFIG MFR_PRIMARY_ON_OFF_CONFIG MFR_PGOOD_POLARITY MFR_VIN_OV_FAULT_HYS MFR_VIN_UV_FAULT_HYS MFR_OT_FAULT_HYS SMBus SMBus Number Transaction Type: Transaction Type: Of Data Writing Data Reading Data Bytes Write Word16 Write Word16 Write Word16 Write Word16 Write Byte Write Word Write Byte Write Byte Write Byte Write Byte Write Byte N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Block Write Block Write N/A N/A Write Byte Write Byte Write Word Write Word Write Word Read Word Read Word Read Word Read Word Read Byte Read Word Read Byte Read Byte Read Byte Read Byte Read Byte Read Word Read Word Read Word Read Word Read Word Read Word Read Word Read Byte Block Read Block Read Block Read Block Read Block Read Read Word Read Word Read Word Read Word Read Word Read Word Read Word Read Word Read Word Read Word Block Read Block Read Read Word Read Byte Read Byte Read Byte Read Word Read Word Read Word 2 2 2 2 1 2 1 1 1 1 1 2 2 2 2 2 2 2 1 22 <=20 <=10 <=10 <=10 2 2 2 2 2 2 2 2 2 2 <=20 <=20 2 1 1 1 2 2 2 www.murata-ps.com/support MDC_DBQ Series.B02 Page 23 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter OVERALL (CONT.) Notes: 1. a) Unit restores the entire contents of the non-volatile User Store memory when power up b) PEC is supported c) Max bus speed: 400kHZ d) SMBALERT# is supported e) Linear data format used f) addressing: If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. 2. Not supported items: 100101XXb Margin Low(Ignore Fault), 101001XXb On Margin High(Ignore Fault) 3. Restart delay of turned off by OPEATION or CONTROL or primary on/off is 200ms 4. Unit will shutdown 1 second for protection , then recover automatically. 5. Restart delay unit: 500ms, lower limit: 500ms. Turn off delay unit: 0ms, lower limit: 0ms if bits 7:6=11b, restart delay is 500ms 6. Restart delay unit and Turn off delay unit are same as note 5 Bits 7:6: 00b,01b,10b are not supported 7. Restart delay unit: 200ms, lower limit: 200ms. Turn off delay unit:0ms, lower limit: 0ms if bits 7:6=11b, restart delay is 200ms 8. Temperature of baseplate side 9. Unit's actual information 10. Default value of DROOP CURRENT SHARE ENABLED mode: 0x01 Default value of DROOP CURRENT SHARE DISABLED mode: 0x00 11. Locked to 10m in DROOP CURRENT SHARE mode; configurable and default value is 0m in CURRENT SHARE DISABLED mode 12. Default value of negative logic: 0x04 Default value of positive logic: 0x06 13. Unit can receive any value for VOUT_TRIM command, but Vout is limited to 8.1~13.2V, if calculated Vout exceeds limit, then equal to limit. 14. Value of 0 is acceptable, which is the same as lower limit to unit. 15. Default value of without "B" suffix: 120C Default value of with "B" suffix: 125C 16. Configurable while without "S" suffix locked while with "S" suffix MURATA-PS DEFINED COMMANDS (01-CFH REFER TO PMBUS 1.2 SPEC) DBh: MFR_CURRENT_SHARE_CONFIG Bits Purpose Value Meaning 7:1 0000000 Reserved 0 Current share disabled Droop Current Share 0 Control 1 Droop current share mode enabled DDh: MFR_PRIMARY_ON_OFF_CONFIG Bits Purpose Value 7:3 Controls how the 2 unit responds to the CONTROL pin Polarity of primary 1 ON/OFF logic 0 On/Off 2 pin -On/Off 2 On/Off 2 VOUT_DROOP TON_DELAY TOFF_DELAY TON_RISE TOFF_FALL -----configurable configurable configurable configurable configurable locked to 0x000A locked to 0x0001 locked to 0x0000 locked to 0x0000 locked to 0x0000 Meaning 00000 Reserved 0 Unit ignores the primary ON/OFF pin Unit requires the primary ON/OFF pin to be 1 asserted to start the unit. 0 Active low (Pull pin low to start the unit) 1 Active high (Pull high or open to start the unit) 0 Reserved DEh: MFR_ PGOOD_POLARITY Bits Purpose Value Meaning 7:1 0000000 Reserved Negative logic, output low if Vout rises to 0 Power good polarity specific value 0 Positive logic, output high if Vout rises to of pin 12 1 specific value www.murata-ps.com/support MDC_DBQ Series.B02 Page 24 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter STATUS WORD AND BYTE (GREEN = SUPPORTED) STATUS_VOUT 7 VOUT_OV_FAULT 6 VOUT_OV_WARNING 5 VOUT_UV_WARNING 4 VOUT_UV_FAULT 3 VOUT_MAX Warning 2 TON_MAX_FAULT 1 TOFF_MAX_WARNING 0 VOUT Tracking Error STATUS_IOUT 7 IOUT_OC_FAULT 6 IOUT_OC_LV_FAULT 5 IOUT_OC_WARNING 4 IOUT_UC_FAULT 3 Current Share Fault 2 In Power Limiting Mode 1 POUT_OP_FAULT 0 POUT_OP_WARNING STATUS_WORD 7 VOUT 6 IOUT/POUT 5 INPUT 4 MFR_SPECIFIC 3 POWER_GOOD# 2 FANS 1 OTHER 0 UNKNOWN 7 BUSY 6 OFF 5 VOUT_OV_FAULT 4 IOUT_OC_FAULT 3 VIN_UV_FAULT 2 TEMPERATURE 1 CML 0 NONE OF THE ABOVE STATUS_INPUT 7 VIN_OV_FAULT 6 VIN_OV_WARNING 5 VIN_UV_WARNING 4 VIN_UV_FAULT 2 IIN_OC_FAULT 1 IIN_OC_WARNING 0 PIN_OP_WARNING STATUS_MFR_SPECIFIC Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined STATUS_FANS_1_2 STATUS_TEMPERATURE 7 OT_FAULT 6 OT_WARNING 5 UT_WARNING 4 UT_FAULT 3 Reserved 2 Reserved 1 Reserved 0 Reserved STATUS_OTHER 7 Reserved 6 Reserved 5 Input A Fuse/Breaker Fault 4 Input B Fuse/Breaker Fault 3 Input A OR-ing Device Fault 2 Input B OR-ing Device Fault 1 Output OR-ing Device Fault 0 Reserved 7 Fan 1 Fault 6 Fan 2 Fault 5 Fan 1 Warning 4 Fan 2 Warning 3 Fan 1 Speed Override 2 Fan 2 Speed Override 1 Air Flow Fault 0 Air Flow Warning STATUS_FANS_3_4 STATUS_CML 7 Invalid/Unsupported Command 6 Invalid/Unsupported Data 5 Packet Error Check Failed 4 Memory Fault Detected 3 Processor Fault Detected 2 Reserved 1 Other Communication Fault 0 Other Memory Or Logic Fault 7 Fan 3 Fault 6 Fan 4 Fault 5 Fan 3 Warning 4 Fan 4 Warning 3 Fan 3 Speed Override 2 Fan 4 Speed Override 1 Reserved 0 Reserved www.murata-ps.com/support MDC_DBQ Series.B02 Page 25 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter TECHNICAL NOTES (CONT.) Parallel Load Sharing (S Option, Droop Load Sharing) Two or more converters may be connected in parallel at both the input and output terminals to support higher output current (total power, see figure 2) or to improve reliability due to the reduced stress that results when the modules are operating below their rated limits. For applications requiring current share, followed the guidelines below. The products have a pre-configured voltage droop. The stated output voltage set point is at no load. The output voltage will decrease when the load current is increased. The voltage will drop 0.35V while load reaches max load. Our goal is to have each converter contribute nearly identical current into the output load under all input, environmental and load conditions. Using Parallel Connections - Load Sharing (Power Boost) Direct Connection Parallel Guidelines Use a common input power source. The input voltage must be between 36V and 75V. +Vout and -Vout of all parallel units should be connected with a balance output impedance; +Sense and -Sense should be connected together (see figure 2). Turn all units off before configuring the output voltage via PMBus commands; all units must have the same output voltage configuration. It is recommended to turn on one unit first and then turn other unit (s) on after the output for the first one has settled. Turn on the next unit (s) after the previous unit reaches its regulated output voltage for at least 10mS. Users can use a different control signal to turn each unit on. Users have the option to use a common primary or secondary Remote On/ Off logic control signal to turn on modules at the same time after the input voltage rises above 36V. If using PMBus to control units ON/OFF in parallel operation, we suggest to control one unit on first. After the output voltage is stable, then make other units' output on. First power up the parallel system (all converters) with a load not exceeding the rated load of 60%*35A*UNITS_QUANTITY and allow converters to settle (typically 20mS) before applying full load (90% load is recommended). When converters are connected in parallel, allow for a safety factor of at least 10%. Up to 90% of max output current can be used from each module. It is critical that the PCB layout incorporates identical connections from each module to the load; use the same trace rating and airflow/thermal environments. If you add output filter components, use identical components and layout. For Power-down, do not soft-off (GUI) while in parallel operation. Power down units by primary or secondary On/Off signal. Turn units off at the same time or one by one to avoid the OCP being triggered. CAUTION: This converter is not internally fused. To avoid danger to persons or equipment and to retain safety certification, the user must connect an external fast-blow input fuse as listed in the specifications. Be sure that the PC board pad area and etch size are adequate to provide enough current so that the fuse will blow with an overload. Using Parallel Connections - Redundancy (N+1) The redundancy connections require external user supplied "OR"ing diodes or "OR"ing MOSFETs for reliability purposes. The diodes allow for an uninterruptable power system operation in case of a catastrophic failure (shorted output) by one of the converters. The diodes should be identical part numbers to enhance balance between the converters. The default factory nominal voltage should be sufficiently matched between converters. The OR'ing diode system is the responsibility of the user. Be aware of the power levels applied to the diodes and possible heat sink requirements. Schottky power diodes with approximately 0.3V drops or "OR"ing MOSFETs may be suitable in the loop whereas 0.7 V silicon power diodes may not be advisable. In the event of an internal device fault or failure of the mains power modules on the primary side, the other devices automatically take over the entire supply of the loads. In the basic N+1 power system, the "N" equals the number of modules required to fully power the system and "+1" equals one back-up module that will take over for a failed module. If the system consists of two power modules, each providing 50% of the total load power under normal operation and one module fails, another one delivers full power to the load. This means you can use smaller and less expensive power converters as the redundant elements, while achieving the goal of increased availability. Thermal Shutdown Extended operation at excessive temperature will initiate overtemperature shutdown triggered by a temperature sensor outside the PWM controller. This operates similarly to overcurrent and short circuit mode. The inception point of the overtemperature condition depends on the average power delivered, the ambient temperature and the extent of forced cooling airflow. Thermal shutdown uses only the hiccup mode (autorestart) and PMBus configurable hysteresis. Start Up Considerations When power is first applied to the DC-DC converter, there is some risk of start up difficulties if you do not have both low AC and DC impedance and adequate regulation of the input source. Make sure that your source supply does not allow the instantaneous input voltage to go below the minimum voltage at all times. Use a moderate size capacitor very close to the input terminals. You may need two or more parallel capacitors. A larger electrolytic or ceramic cap supplies the surge current and a smaller parallel low-ESR ceramic cap gives low AC impedance. Remember that the input current is carried both by the wiring and the ground plane return. Make sure the ground plane uses adequate thickness copper. Run additional bus wire if necessary. Input Fusing Certain applications and/or safety agencies may require fuses at the inputs of power conversion components. Fuses should also be used when there is the possibility of sustained input voltage reversal which is not current-limited. For greatest safety, we recommend a fast blow fuse installed in the ungrounded input supply line. www.murata-ps.com/support MDC_DBQ Series.B02 Page 26 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter Figure 2. Load Sharing Block Diagram Input Under-Voltage Shutdown and Start-Up Threshold Converters will not begin to regulate properly until the rising input voltage exceeds and remains at the Start-Up Threshold Voltage (see Specifications). Once operating, converters will not turn off until the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent restart will not occur until the input voltage rises again above the Start-Up Threshold. This built-in hysteresis prevents any unstable on/off operation at a single input voltage. The over/ under-voltage fault level and fault response and hysterisis can be configured via the PMBus interface. Start-Up Time Start-Up Time (see Specifications) is the time interval between the point when the rising input voltage crosses the Start-Up Threshold and the output voltage enters and remains within its specified accuracy band. These converters include a soft start circuit to control Vout ramp time, thereby limiting the input inrush current. The On/Off Remote Control interval from On command to Vout (final 5%) assumes that the converter already has its input voltage stabilized above the Start-Up Threshold before the On command. The interval is measured from the On command until the output enters and remains within its specified accuracy band. Recommended Input Filtering The user must assure that the input source has low AC impedance to provide dynamic stability and that the input supply has little or no inductive content, including long distributed wiring to a remote power supply. The converter will operate with no additional external capacitance if these conditions are met. For best performance, we recommend installing a low-ESR capacitor immediately adjacent to the converter's input terminals. The capacitor should be a ceramic type such as the Murata GRM32 series or a polymer type. More input bulk capacitance may be added in parallel (either electrolytic or tantalum) if needed. Recommended Output Filtering The converter will achieve its rated output ripple and noise with no additional external capacitor. However, the user may install more external output capacitance to reduce the ripple even further or for improved dynamic response. Again, use low-ESR ceramic (Murata GRM32 series) or polymer capacitors. Mount these close to the converter. Measure the output ripple under your load conditions. Use only as much capacitance as required to achieve your ripple and noise objectives. Excessive capacitance can make step load recovery sluggish or possibly introduce instability. Do not exceed the maximum rated output capacitance listed in the specifications. Input Ripple Current and Output Noise All models in this converter series are tested and specified for input reflected ripple current and output noise using designated external input/output components, circuits and layout as shown in the figures below. The Cbus and Lbus components simulate a typical DC voltage bus. Minimum Output Loading Requirements All models regulate within specification and are stable under no load to full load conditions. www.murata-ps.com/support MDC_DBQ Series.B02 Page 27 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter TO OSCILLOSCOPE CURRENT PROBE +Vin VIN + - + - +Vout LBUS CBUS C1 CIN -Vin C2 SCOPE RLOAD -Vout CIN = 220F, ESR < 700m @ 100kHz CBUS = 220F, ESR < 100m @ 100kHz LBUS = 12H Figure 3. Measuring Input Ripple Current C1 = 1F; C2 = 10F LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 4. Measuring Output Ripple and Noise (PARD) Thermal Shutdown (OTP, UTP) To prevent many over temperature problems and damage, these converters include thermal shutdown circuitry. If environmental conditions cause the temperature of the DC-DCs to rise above the Operating Temperature Range up to the shutdown temperature, an on-board electronic temperature sensor will power down the unit. When the temperature decreases below the turn-on threshold set in the command recover temp is (OT_FAULT_LIMIT-MFR_OT_ FAULT_HYS), the hysteresis is defined in general electrical specification section. The OTP and hysteresis of the module can be reconfigured using the PMBus. The OTP and UTP fault limit and fault response can be configured via the PMBus. CAUTION: If you operate too close to the thermal limits, the converter may shut down suddenly without warning. Be sure to thoroughly test your application to avoid unplanned thermal shutdown. Temperature Derating Curves The graphs in this data sheet illustrate typical operation under a variety of conditions. The Derating curves show the maximum continuous ambient air temperature and decreasing maximum output current which is acceptable under increasing forced airflow measured in Linear Feet per Minute ("LFM"). Note that these are AVERAGE measurements. The converter will accept brief increases in current or reduced airflow as long as the average is not exceeded. Note that the temperatures are of the ambient airflow, not the converter itself which is obviously running at higher temperature than the outside air. Also note that "natural convection" is defined as very flow rates which are not using fan-forced airflow. Depending on the application, "natural convection" is usually about 30-65 LFM but is not equal to still air (0 LFM). Murata Power Solutions makes Characterization measurements in a closed cycle wind tunnel with calibrated airflow. We use both thermocouples and an infrared camera system to observe thermal performance. As a practical matter, it is quite difficult to insert an anemometer to precisely measure airflow in most applications. Sometimes it is possible to estimate the effective airflow if you thoroughly understand the enclosure geometry, entry/exit orifice areas and the fan flowrate specifications. CAUTION: If you exceed these Derating guidelines, the converter may have an unplanned Over Temperature shut down. Also, these graphs are all collected near Sea Level altitude. Be sure to reduce the derating for higher altitude. Output Short Circuit Condition The short circuit condition is an extension of the "Current Limiting" condition. When the monitored peak current signal reaches a certain range, the PWM controller's outputs are shut off thereby turning the converter "off." This is followed by an extended time out period. This period can vary depending on other conditions such as the input voltage level. Following this time out period, the PWM controller will attempt to re-start the converter by initiating a "normal start cycle" which includes softstart. If the "fault condition" persists, another "hiccup" cycle is initiated. This "cycle" can and will continue indefinitely until such time as the "fault condition" is removed, at which time the converter will resume "normal operation." Operating in the "hiccup" mode during a fault condition is advantageous in that average input and output power levels are held low preventing excessive internal increases in temperature. Remote On/Off Control The DBQ series modules are equipped with both primary (On/Off 1, enabled, pull up internal) and secondary (On/Off 2, disabled, pull up internal) control pins for increased system flexibility. Both are configurable via PMBus. The On/Off pins are TTL open-collector and/or CMOS open-drain compatible. (See general specifications for threshold voltage levels. See also MFR_PRIMARY_ON_OFF_ CONFIG section.) Negative-logic models are on (enabled) when the On/Off is grounded or brought to within a low voltage (see specifications) with respect to -Vin. The device is off (disabled) when the On/Off is left open or is pulled high to +13.5Vdc with respect to -Vin. The On/Off function allows the module to be turned on/off by an external device switch. Positive-logic models are enabled when the On/Off pin is left open or is pulled high to +13.5V with respect to -Vin. Positive-logic devices are disabled when the On/Off is grounded or brought to within a low voltage (see specifications) with respect to -Vin. For voltage levels for On/Off 2 signal see functional specifications. The restart delay for this module to turn On/Off by the On/Off control pin is 200ms. On/Off 1 or 2 Control status Not ignored On/Off 1 or 2 pin OPEN PULL HIGH PULL LOW P LOGIC ON ON OFF Ignored N LOGIC OFF OFF ON P LOGIC ON ON ON N LOGIC ON ON ON www.murata-ps.com/support MDC_DBQ Series.B02 Page 28 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter On/Off 1 can be configured by PMBus command MFR_PRIMARY_ON_OFF_ CONFIG (DDh); default configuration is not ignored; required On/Off 1 control pin to be asserted to start the unit. On/Off 2 can be configured by PMBus command ON_OFF_CONFIG (02h); default configuration is ignored; treat it as always ON. DBQ's On/Off status is dependent on On/Off 1 control, On/Off 2 control, and OPERATION (PMBus command) status; all three must be ON to turn DBQ on; if one of them is OFF, unit will be turned off. Output Capacitive Load These converters do not require external capacitance added to achieve rated specifications. Users should only consider adding capacitance to reduce switching noise and/or to handle spike current load steps. Install only enough capacitance to achieve noise objectives. Excess external capacitance may cause degraded transient response and possible oscillation or instability. Remote Sense Input Use the Sense inputs with caution. Sense is normally connected at the load. Sense inputs compensate for output voltage inaccuracy delivered at the load. Contact and PCB resistance losses due to IR drops +VOUT -VIN I OUT +SENSE Sense Current ON/OFF CONTROL LOAD Sense Return -SENSE I OUT Return +VIN -VOUT Contact and PCB resistance losses due to IR drops This is done by correcting IR voltage drops along the output wiring and the current carrying capacity of PC board etch. This output drop (the difference between Sense and Vout when measured at the converter) should not exceed 0.5V. Consider using heavier wire if this drop is excessive. Sense inputs also improve the stability of the converter and load system by optimizing the control loop phase margin. Note: The Sense input and power Vout lines are internally connected through low value resistors to their respective polarities so that the converter can operate without external connection to the Sense. Nevertheless, if the Sense function is not used for remote regulation, the user should connect +Sense to +Vout and -Sense to -Vout at the converter pins. The remote Sense lines carry very little current. They are also capacitively coupled to the output lines and therefore are in the feedback control loop to regulate and stabilize the output. As such, they are not low impedance inputs and must be treated with care in PC board layouts. Sense lines on the PCB should run adjacent to DC signals, preferably Ground. In cables and discrete wiring, use twisted pair, shielded tubing or similar techniques. Any long, distributed wiring and/or significant inductance introduced into the Sense control loop can adversely affect overall system stability. If in doubt, test your applications by observing the converter's output transient response during step loads. There should not be any appreciable ringing or oscillation. You may also adjust the output trim slightly to compensate for voltage loss in any external filter elements. Do not exceed maximum power ratings. Please observe Sense inputs tolerance to avoid improper operation: [Vout(+) -Vout(-)] - [Sense(+) -Sense(-)] 5% of Vout Output overvoltage protection is monitored at the output voltage pin, not the Sense pin. Therefore excessive voltage differences between Vout and Sense together with trim adjustment of the output can cause the overvoltage protection circuit to activate and shut down the output. Power derating of the converter is based on the combination of maximum output current and the highest output voltage. Therefore the designer must ensure: (Vout at pins) x (Iout) (Max. rated output power) Figure 5. Remote Sense Circuit Configuration Soldering Guidelines Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifications may cause damage to the product. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100 C. for 30 minutes). Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers. Wave Solder Operations for through-hole mounted products (THMT) For Sn/Ag/Cu based solders: Maximum Preheat Temperature 115 C. Maximum Pot Temperature 270 C. Maximum Solder Dwell Time 7 seconds For Sn/Pb based solders: Maximum Preheat Temperature 105 C. Maximum Pot Temperature 250 C. Maximum Solder Dwell Time 6 seconds www.murata-ps.com/support MDC_DBQ Series.B02 Page 29 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter Emissions Performance Murata Power Solutions measures its products for conducted emissions against the EN 55022 and CISPR 22 standards. Passive resistance loads are employed and the output is set to the maximum voltage. If you set up your own emissions testing, make sure the output load is rated at continuous power while doing the tests. The recommended external input and output capacitors (if required) are included. Please refer to the fundamental switching frequency. All of this information is listed in the Product Specifications. An external discrete filter is installed and the circuit diagram is shown below. [3] Conducted Emissions Test Results VCC RTN L1 C1 C2 C3 L2 + C4 C5 C6 C7 + DC/DC C12 LOAD -48V C8 C9 C10 GND C11 GND Figure 6. Conducted Emissions Test Circuit Graph 1. Conducted emissions performance, Positive Line, CISPR 22, Class B, full load [1] Conducted Emissions Parts List Reference C1, C2, C3, C4, C5 C6 L1, L2 C8, C9, C10, C11 C7 C12 Part Number Description Vendor SMD CERAMIC-100VGRM32ER72A105KA01L Murata 1000nF-X7R-1210 SMD CERAMIC100V-100nFGRM319R72A104KA01D Murata 10%-X7R-1206 COMMON MODE-473uHPG0060T Pulse 25%-14A SMD CERAMIC630V-0.22uFGRM55DR72J224KW01L Murata 10%-X7R-2220 Aluminum100V-220UfUHE2A221MHD Nichicon 10%-long lead NA [2] Conducted Emissions Test Equipment Used Hewlett Packard HP8594L Spectrum Analyzer - S/N 3827A00153 2Line V-networks LS1-15V 50/50Uh Line Impedance Stabilization Network Graph 2. Conducted emissions performance, Negative Line, CISPR 22, Class B, full load [4] Layout Recommendations Most applications can use the filtering which is already installed inside the converter or with the addition of the recommended external capacitors. For greater emissions suppression, consider additional filter components and/or shielding. Emissions performance will depend on the user's PC board layout, the chassis shielding environment and choice of external components. Please refer to Application Note GEAN-02 for further discussion. Since many factors affect both the amplitude and spectra of emissions, we recommend using an engineer who is experienced at emissions suppression. www.murata-ps.com/support MDC_DBQ Series.B02 Page 30 of 31 DBQ/DVQ Series 420W Digital Fully Regulated Intermediate DC-DC Bus Converter IR Transparent optical window Unit under test (UUT) IR Video Camera Precision low-rate anemometer 3" below UUT Ambient temperature sensor Airflow collimator Vertical Wind Tunnel Murata Power Solutions employs a computer controlled custom-designed closed loop vertical wind tunnel, infrared video camera system, and test instrumentation for accurate airflow and heat dissipation analysis of power products. The system includes a precision low flow-rate anemometer, variable speed fan, power supply input and load controls, Variable temperature gauges, and adjustable heating element. speed fan The IR camera monitors the thermal performance of the Unit Under Test (UUT) under static steady-state conditions. A special optical port is used which is transparent to infrared wavelengths. Both through-hole and surface mount converters are soldered down to a 10" x 10" host carrier board for realistic heat absorption and spreading. Both longitudinal and transverse airflow studies are possible by rotation of this carrier Heating board since there are often significant differences in the heat element dissipation in the two airflow directions. The combination of adjustable airflow, adjustable ambient heat, and adjustable Input/Output currents and voltages mean that a very wide range of measurement conditions can be studied. The collimator reduces the amount of turbulence adjacent to the UUT by minimizing airflow turbulence. Such turbulence influences the effective heat transfer characteristics and gives false readings. Excess turbulence removes more heat from some surfaces and less heat from others, possibly causing uneven overheating. Both sides of the UUT are studied since there are different thermal gradients on each side. The adjustable heating element and fan, built-in temperature gauges, and no-contact IR camera mean that power supplies are tested in real-world conditions. Figure 7. Vertical Wind Tunnel Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. (c) 2016 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_DBQ Series.B02 Page 31 of 31