Data Sheet April 3, 2012 JRCW450R Series Power Modules; DC-DC Converters 36-75 Vdc Input; 32Vdc Output; 450W Output ORCA SERIESTM RoHS Compliant Applications RF Power Amplifier Wireless Networks Switching Networks Options Features Compliant to RoHS EU Directive 2002/95/EC (-Z versions) Compliant to ROHS EU Directive 2002/95/EC with lead solder exemption (non-Z versions) High power density: 166 W/in3 Very high efficiency: >94% Typ at Full Load Industry standard half-brick pin-out Low output ripple and noise Industry standard, DOSA compliant half-brick footprint 57.7mm x 60.7mm x 12.7mm (2.27" x 2.39" x 0.5") Remote Sense 2:1 input voltage range Single tightly regulated output Constant switching frequency Constant Current Overcurrent limit Latch after short circuit fault shutdown Over temperature protection auto restart Output voltage adjustment trim, 16.0Vdc to 35.2Vdc Wide operating case temperature range (-40C to 100C) CE mark meets 2006/95/EC directives ANSI/UL 60950-1, 2nd Ed. Recognized, CSA C22.2 No. 60950-1-07 Certified, and VDE 0805-1 (EN60950-1, 2nd Ed.) Licensed * Output OCP/OVP auto restart Shorter pins Unthreaded heatsink holes ISO** 9001 and ISO 14001 certified manufacturing facilities Tunable LoopTM for transient response optimization Compliant to IPC-9592A, Category 2, Class II Description The JRCW450R ORCATM series of dc-dc converters are a new generation of isolated, very high efficiency DC/DC power modules providing up to 450W output power in an industry standard, DOSA compliant half-brick size footprint, which makes it an ideal choice for high voltage and high power applications. Threaded-through holes are provided to allow easy mounting or addition of a heatsink for high-temperature applications. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. This module contains an optional new TM feature, the Tunable Loop , that allows the user to optimize the dynamic response of the converter to match the load with reduced amount of output capacitance, leading to savings on cost and PWB area. * UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** ISO is a registered trademark of the International Organization of Standards Document No: DS09-011 ver 1.0 PDF name: JRCW450R.pdf Data Sheet JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output April 3, 2012 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. Parameter Device Symbol Min Max Unit Input Voltage Continuous All VIN -0.3 80 Vdc Transient, operational (100 ms) All VIN,trans -0.3 100 Vdc Operating Ambient Temperature All Ta -40 85 C Operating Case Temperature (See Thermal Considerations section, Figure 17) All Tc -40 100 C Storage Temperature All Tstg -55 125 C All 1500 Vdc All 500 Vdc I/O Isolation Voltage: Input to Case, Input to Output Output to Case Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit All VIN 36 48 75 Vdc All IIN,max 14.0 Adc Inrush Transient All 2 2 As Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12H source impedance; VIN=0V to 75V, IO= IOmax ; see Figure 7) All Input Ripple Rejection (120Hz) All Operating Input Voltage (see Figure 12 for VIN MIN when using trim-up feature) Maximum Input Current (VIN=36V to 75V, IO=IO, max) It 20 50 2 mAp-p dB CAUTION: This power module is not internally fused. An input line fuse must always be used. This power module can be used in a wide variety of applications, ranging from simple standalone operation to being an integrated part of complex power architecture. To preserve maximum flexibility, internal fusing is not included. Always use an input line fuse, to achieve maximum safety and system protection. The safety agencies require a time-delay or fast-acting fuse with a maximum rating of 25 A in the ungrounded input connection (see Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer's data sheet for further information. LINEAGE POWER 2 Data Sheet JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output April 3, 2012 Electrical Specifications (continued) Parameter Device Output Voltage Set-point (VIN=VIN,nom, IO=IO, max, Tc =25C) All Output Voltage Set-Point Total Tolerance (Over all operating input voltage, resistive load, and temperature conditions until end of life) All Symbol Min Typ Max Unit VO, set 31.5 32 32.5 Vdc VO 31.0 33.0 Vdc Output Regulation Line (VIN=VIN, min to VIN, max) All 0.1 0.2 %Vo,set Load (IO=IO, min to IO, max) All 0.1 0.2 %Vo,set Temperature (Tc = -40C to +100C) All 0.25 0.5 %Vo,set RMS (5Hz to 20MHz bandwidth) All 45 55 mVrms Peak-to-Peak (5Hz to 20MHz bandwidth) All 80 200 mVpk-pk Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max) All, except -T -T CO 440 6500 F CO, 440 470 F With the Tunable LoopTM (ESR > 50 m)2 -T CO 440 10,000 F Output Power (Vo=32V to 35.2V) All PO,max 450 W Output Current Output Current Limit Inception (Constant current until Vo<VtrimMIN , duration <4s) Output Short Circuit Current (VO 0.25Vdc) All Io 0 14.0 Adc All IO, lim 16.0 20.0 Adc All IO, sc All 94.0 fsw External Capacitance (ESR > TBD m) 1 Without the Tunable LoopTM (ESRMAX = 80m) 1 Hiccup mode Efficiency VIN=VIN, nom, Tc=25C IO=IO, max , VO= VO,set Switching Frequency 60 Apk 5 Arms 94.4 % 175 kHz Dynamic Load Response (Io/t=1A/10s; Vin=Vin,nom; Tc=25C; Tested with a 470 F aluminum and a 10 F ceramic capacitor across the load.) Load Change from Io= 50% to 75% of Io,max: Peak Deviation All Vpk 2 %VO, set Settling Time (Vo<10% peak deviation) ms ts 1.5 Load Change from Io= 25% to 50% of Io,max: Vpk 2 %VO, set Peak Deviation 1.5 ts ms Settling Time (Vo<10% peak deviation) 1 Note: use a minimum 2 x 220uF output capacitor. Recommended capacitor is Nichicon CD series, 220uF/35V. If the ambient O temperature is less than -20 C, use more than 3 of recommended minimum capacitors. 2 External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best transient response. See the Tunable LoopTM section for details. Isolation Specifications Parameter Symbol Min Typ Max Unit Isolation Capacitance Ciso 15 nF Isolation Resistance Riso 10 M Min Typ Max General Specifications Parameter Calculated Reliability based upon Telcordia SR332 Issue 2: Method I Case 3 (IO=80%IO, max, TA=40C, airflow = 200 lfm, 90% confidence) Weight LINEAGE POWER Device All All Symbol FIT 498.3 MTBF 2,006,767 76.4 2.69 Unit 9 10 /Hours Hours g oz. 3 Data Sheet April 3, 2012 JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit All All All All Ion/off Von/off Von/off Ion/off 0 1.0 1.2 5 50 mA Vdc Vdc A All Tdelay 120 ms All Tdelay 20 ms All, except -T Trise 50 ms 110 ms 3 % VO, set 2 %Vo,nom Remote On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or Signal referenced to VIN- terminal) Negative Logic: device code suffix "1" Logic Low = module On, Logic High = module Off Positive Logic: No device code suffix required Logic Low = module Off, Logic High = module O Logic Low - Remote On/Off Current Logic Low - On/Off Voltage Logic High Voltage - (Typ = Open Collector) Logic High maximum allowable leakage Turn-On Delay and Rise Times (Vin=Vin,nom, IO=IO, max, 25C) Case 1: Tdelay = Time until VO = 10% of VO,set from application of Vin with Remote On/Off set to ON, Case 2: Tdelay = Time until VO = 10% of VO,set from application of Remote On/Off from Off to On with Vin already applied for at least one second. Trise = time for VO to rise from 10% to 90% of VO,set. All with -T Output Voltage Overshoot (IO=80% of IO, max, TA=25C) Output Voltage Adjustment (See Feature Descriptions): Output Voltage Remote-sense Range (only for No Trim or Trim down application ) Output Voltage Set-point Adjustment Range (trim) __ __ Vtrim 16.0 --- 35.2 Vdc All VO, limit 37 40 Vdc All Tref 110 C 35 32 3 36 31 Vdc Vdc Vdc 81 --- 79.5 83 3 81 --- Vdc Vdc Vdc All Vsense All Output Overvoltage Protection Over Temperature Protection (See Feature Descriptions, Figure 17) Input Under Voltage Lockout Turn-on Threshold Turn-off Threshold Hysteresis Input Over voltage Lockout Turn-on Threshold Turn-off Threshold Hysteresis LINEAGE POWER VIN, UVLO All All All VIN, OVLO All All All 4 Data Sheet JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output April 3, 2012 Characteristic Curves OUTPUT VOLTAGE VO (V) (100mV/div) TIME, t (40ms/div) Figure 4. Typical Start-Up Using negative Remote On/Off; Co,ext = 440F. Figure 2. Typical Output Ripple and Noise at Room Temperature and 48Vin; Io = Io,max; Co,ext = 440F. Figure 5. Typical Start-Up from VIN, on/off enabled prior to VIN step; Co,ext = 470F. OUTPUT CURRENT OUTPUT VOLTAGE IO (A) (5A/div) VO(V) (500mV/div) TIME, t (40ms/div) OUTPUT CURRENT OUTPUT VOLTAGE VO(V) (500mV/div) IO (A) (5A/div) TIME, t (1s/div) On/Off VOLTAGE OUTPUTVOLTAGE VO (V) (10V/div) VON/OFF(V) (5V/div) OUTPUT CURRENT, Io (A) Figure 1. Converter Efficiency versus Output Current. INPUT VOLTAGE OUTPUT VOLTAGE VO(V) (10V/div) Vin (V) (20V/div) EFFICIENCY (%) The following figures provide typical characteristics for the JRCW450R (32V, 14A) at 25C. The figures are identical for either positive or negative Remote On/Off logic. TIME, t (1ms/div) Figure 3. Dynamic Load Change Transient Response from 25% to 50% to 25% of Full Load at Room Temperature and 48 Vin; 0.1A/uS, Co,ext = 440F. 5 TIME, t (1ms/div) Figure 6. Dynamic Load Change Transient Response from 50 % to 75% to 50% of Full Load at Room Temperature and 48 Vin; 0.1A/uS, Co,ext = 440F. Data Sheet April 3, 2012 JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output Test Configurations Design Considerations Input Source Impedance The power module should be connected to a low ac-impedance source. A highly inductive source impedance can affect the stability of the power module. For the test configuration in Figure 7, a 470F Low ESR aluminum capacitor, CIN , mounted close to the power module helps ensure the stability of the unit. Consult the factory for further application guidelines. Output Capacitance Note: Measure the input reflected-ripple current with a simulated source inductance (LTEST) of 12 H. Capacitor CS offsets possible battery impedance. Measure the current, as shown above. Figure 7. Input Reflected Ripple Current Test Setup. The JRCW450R power module requires a minimum output capacitance of 440F Low ESR aluminum capacitor, Cout to ensure stable operation over the full range of load and line conditions, see Figure 8. If the ambient temperature is under -20C, it is required to use at least 3 pcs of minimum capacitors in parallel. In general, the process of determining the acceptable values of output capacitance and ESR is complex and is load-dependent. Safety Considerations Note: Use a Cout (470 F Low ESR aluminum or tantalum capacitor typical), a 0.1 F ceramic capacitor and a 10 F ceramic capacitor, and Scope measurement should be made using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in.) from the module. Figure 8. Output Ripple and Noise Test Setup. Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, nd i.e., UL 60950-1, 2nd Ed., CSA No. 60950-1 2 Ed., and VDE0805-1 EN60950-1, 2nd Ed. For end products connected to -48V dc, or -60Vdc nominal DC MAINS (i.e. central office dc battery plant), no further fault testing is required. *Note: -60V dc nominal battery plants are not available in the U.S. or Canada. For all input voltages, other than DC MAINS, where the input voltage is less than 60V dc, if the input meets all of the requirements for SELV, then: The output may be considered SELV. Output voltages will remain within SELV limits even with internally-generated non-SELV voltages. Single component failure and fault tests were performed in the power converters. Figure 9. Output Voltage and Efficiency Test Setup. LINEAGE POWER One pole of the input and one pole of the output are to be grounded, or both circuits are to be kept floating, to maintain the output voltage to ground voltage within ELV or SELV limits. However, SELV will not be maintained if VI(+) and VO(+) are grounded simultaneously. 6 Data Sheet April 3, 2012 JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output Safety Considerations (continued) For all input sources, other than DC MAINS, where the input voltage is between 60 and 75V dc (Classified as TNV-2 in Europe), the following must be meet, if the converter's output is to be evaluated for SELV: The input source is to be provided with reinforced insulation from any hazardous voltage, including the ac mains. One Vi pin and one Vo pin are to be reliably earthed, or both the input and output pins are to be kept floating. Another SELV reliability test is conducted on the whole system, as required by the safety agencies, on the combination of supply source and the subject module to verify that under a single fault, hazardous voltages do not appear at the module's output. All flammable materials used in the manufacturing of these modules are rated 94V-0, or tested to the UL60950 A.2 for reduced thickness. The input to these units is to be provided with a maximum 25 A fast-acting or time-delay fuse in the ungrounded input connection. Feature Description Remote On/Off Two remote on/off options are available. Positive logic turns the module on during a logic high voltage on the ON/OFF pin, and off during a logic low. Negative logic remote On/Off, device code suffix "1", turns the module off during a logic high and on during a logic low. To turn the power module on and off, the user must supply a switch (open collector or equivalent) to control the voltage (Von/off) between the ON/OFF terminal and the VIN(-) terminal (see Figure 10). Logic low is 0V Von/off 1.2V. The maximum Ion/off during a logic low is 1mA, the switch should be maintain a logic low level whilst sinking this current. During a logic high, the typical maximum Von/off generated by the module is 5V, and the maximum allowable leakage current at Von/off = 5V is 50A. If not using the remote on/off feature: For positive logic, leave the ON/OFF pin open. For negative logic, short the ON/OFF pin to VIN(-). LINEAGE POWER Figure 10. Circuit configuration for using Remote On/Off Implementation. Overcurrent Protection To provide protection in a fault output overload condition, the module is equipped with internal current limiting protection circuitry, and can endure continuous overcurrent by providing constant current output, for up to 4 seconds, as long as the output voltage is greater than VtrimMIN. If the load resistance is to low to support VtrimMIN in an overcurrent condition or a short circuit load condition exists, the module will shutdown immediately. A latching shutdown option is standard. Following shutdown, the module will remain off until the module is reset by either cycling the input power or by toggling the on/off pin for one second. An auto-restart option (4) is also available in a case where an auto recovery is required. If overcurrent greater than 19A persists for few milli-seconds, the module will shut down and auto restart until the fault condition is corrected. If the output overload condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely, until the overcurrent condition is corrected. Over Voltage Protection The output overvoltage protection consists of circuitry that monitors the voltage on the output terminals. If the voltage on the output terminals exceeds the over voltage protection threshold, then the module will shutdown and latch off. The overvoltage latch is reset by either cycling the input power for one second or by toggling the on/off signal for one second. The protection mechanism is such that the unit can continue in this condition until the fault is cleared. An auto-restart option (4) is also available in a case where an auto recovery is required. 7 Data Sheet April 3, 2012 JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output Feature Description (continued) 35 Remote sense [Vo(+)-Vo(-)] - [SENSE(+) - SENSE(-)] 2% of Vo,nom The voltage between the Vo(+) and Vo(-) terminals must not exceed the minimum output overvoltage shutdown value indicated in the Feature Specifications table. This limit includes any increase in voltage due to remote-sense compensation and output voltage setpoint adjustment (trim). See Figure 11. If not using the remote-sense feature to regulate the output at the point of load, then connect SENSE(+) to Vo(+) and SENSE(-) to Vo(-) at the module. Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim: the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power. Upper Trim Limit 30 Vout (V) Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections (see Figure 11). For No Trim or Trim down application, the voltage between the remote-sense pins and the output terminals must not exceed the output voltage sense range given in the Feature Specifications table i.e.: 25 Lower Trim Limit 20 15 35 40 45 50 55 Vin (V) 60 65 70 75 Figure 12. Output Voltage Trim Limits vs. Input Voltage. Trim Down - Decrease Output Voltage With an external resistor (Radj_down) between the TRIM and SENSE(-) pins, the output voltage set point (Vo,adj) decreases (see Figure 13). The following equation determines the required external-resistor value to obtain a percentage output voltage change of %. For output voltages: VO,nom = 32V Without -T Option With -T Option 100 Radj _ down 2 k % Where, 1000 Radj _ down 11k % % Vo , nom Vdesired 100 Vo , nom Vdesired = Desired output voltage set point (V). Figure 11. Effective Circuit Configuration for SingleModule Remote-Sense Operation Output Voltage. Output Voltage Programming Trimming allows the user to increase or decrease the output voltage set point of a module. Trimming down is accomplished by connecting an external resistor between the TRIM pin and the SENSE(-) pin. Trimming up is accomplished by connecting external resistor between the SENSE(+) pin and TRIM pin. The trim resistor should be positioned close to the module. Certain restrictions apply to the input voltage lower limit when trimming the output voltage to the maximum. See Figure 12 for the allowed input to output range when using trim. If not using the trim down feature, leave the TRIM pin open. LINEAGE POWER Figure 13. Circuit Configuration to Decrease Output Voltage. Trim Up - Increase Output Voltage With an external resistor (Radj_up) connected between the SENSE(+) and TRIM pins, the output voltage set point (Vo,adj) increases (see Figure 14). The following equation determines the required external-resistor value to obtain a percentage output voltage change of %. 8 Data Sheet April 3, 2012 JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output Feature Description (continued) For output voltages: VO,nom = 32V Without -T Option (100 %) (100 ( 2 %) V R adj _ up O , nom k 1 . 225 % % With -T Option 27122 Radj _ up 15.12 k % Where, Vdesired Vo , nom % 100 Vo , nom Vdesired = Desired output voltage set point (V). 100 Radj _ down 2 K 105 47.5 To trim up the output of a nominal 32V module, without -T option, to 35.2V % 35.2V 32V 100 10% 32V 32 (100 10 ) (100 ( 2 10 ) Radj _ up 10 1.225 10 Radj _ up = 275.3k Active Voltage Programming For both the JRCW450Rx and JRCW450Rx-T, a Digital-Analog converter (DAC), capable of both sourcing and sinking current, can be used to actively set the output voltage, as shown in Figure 15. The value of RG will be dependent on the voltage step and range of the DAC and the desired values for trim-up and trim-down %. Please contact your Lineage Power technical representative to obtain more details on the selection for this resistor. Figure 14. Circuit Configuration to Increase Output Voltage. The voltage between the Vo(+) and Vo(-) terminals must not exceed the minimum output overvoltage shutdown value indicated in the Feature Specifications table. This limit includes any increase in voltage due to remote- sense compensation and output voltage setpoint adjustment (trim). See Figure 11. Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. Figure 15. Circuit Configuration to Actively Adjust the Output Voltage. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power. Examples: To trim down the output of a nominal 32V module, without -T option, to 16.8V Tunable LoopTM 32V 16.8V % 100 47.5% 32V The Tunable Loop allows the user to externally adjust the voltage control loop to match the filter network connected to the output of the module. The Tunable LoopTM is implemented by connecting a series R-C LINEAGE POWER The JRCW450Rx-T modules have a new feature that optimizes transient response of the module called Tunable LoopTM. External capacitors are usually added to the output of the module for two reasons: to reduce output ripple and noise and to reduce output voltage deviations from the steady-state value in the presence of dynamic load current changes. Adding external capacitance however affects the voltage control loop of the module, typically causing the loop to slow down with sluggish response. Larger values of external capacitance could also cause the module to become unstable. TM 9 Data Sheet JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output April 3, 2012 between the SENSE(+) and TRIM pins of the module, as shown in Fig. 16. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module. Figure 16. Circuit diagram showing connection of RTUNE and CTUNE to tune the control loop of the module. thermally coupled to the case. Heat is removed by conduction, convection, and radiation to the surrounding environment. Proper cooling can be verified by measuring the case temperature. Peak temperature (TREF) occurs at the position indicated in Figure 17. Considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The thermal data presented here is based on physical measurements taken in a wind tunnel. For reliable operation this temperature should not exceed 100C at either TREF 1 or TREF 2 for applications using forced convection airflow or cold plate applications. The output power of the module should not exceed the rated power for the module as listed in the ordering Information table. Although the maximum TREF temperature of the power modules is discussed above, you can limit this temperature to a lower value for extremely high reliability. Table 1 shows the recommended values of RTUNE and CTUNE for different values of electrolytic output capacitors up to 8800F that might be needed for an application to meet output ripple and noise requirements. Table 1. General recommended values of RTUNE and CTUNE for various external electrolytic capacitor values. Cout(F) 1100 2200 4400 6600 8800 ESR (m) 60 30 15 10 7.5 RTUNE 12k 4.7k 1.8k 820 390 CTUNE 220nF 220nF 220nF 220nF 220nF Please contact your Lineage Power technical representative to obtain more details of this feature as well as for guidelines on how to select the right value of external R-C to tune the module for best transient performance and stable operation for other output capacitance values. Over Temperature Protection The JRCW450R module provides a non-latching over temperature protection. A temperature sensor monitors the operating temperature of the converter. If the reference temperature, TREF 1, (see Figure 17) exceeds a threshold of 115 C (typical), the converter will shut down and disable the output. When the base plate temperature has decreased by approximately 20 C the converter will automatically restart. The module can be restarted by cycling the dc input power for at least one second or by toggling the remote on/off signal for at least one second. Thermal Considerations The power modules operate in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the unit. Heat-dissipating components inside the unit are LINEAGE POWER Figure 17. Case (TREF ) Temperature Measurement Location (top view). Thermal Derating Thermal derating is presented for two different applications: 1) Figure 18, the JRCW450R module is thermally coupled to a cold plate inside a sealed clamshell chassis, without any internal air circulation; and 2) Figure 19, 20 and 21, the JRCW450R module is mounted in a traditional open chassis or cards with forced air flow. In application 1, the module is cooled entirely by conduction of heat from the module primarily through the top surface to a cold plate, with some conduction through the module's pins to the power layers in the system board. For application 2, the module is cooled by heat removal into a forced airflow that passes through the interior of the module and over the top base plate and/or attached heatsink. 10 Data Sheet JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output Output Current, IO (A) Output Power (W) April 3, 2012 Cold plate (inside surface) temperature (C) Figure 18. Output Power Derating for JRCW450R in Conduction cooling (cold plate) applications; Ta <70C adjacent to module; VIN = VIN,NOM Output Current, IO (A) Layout Considerations The JRCW450R power module series are constructed using a single PWB with integral base plate; as such, component clearance between the bottom of the power module and the mounting (Host) board is limited. Avoid placing copper areas on the outer layer directly underneath the power module. Post Solder Cleaning and Drying Considerations o Ambient Temperature, TA ( C) Figure 19. Derating Output Current vs. local Ambient temperature and Airflow, No Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to Lineage Power Board Mounted Power Modules: Soldering and Cleaning Application Note. Output Current, IO (A) Through-Hole Lead-Free Soldering Information o Ambient Temperature, TA ( C) Figure 20. Derating Output Current vs. local Ambient temperature and Airflow, 0.5" Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). LINEAGE POWER o Ambient Temperature, TA ( C) Figure 21. Derating Output Current vs. local Ambient temperature and Airflow, 1.0" Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). The RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. They are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210C. For Pb solder, the recommended pot temperature is 260C, while the Pb-free solder pot is 270C max. The JRCW450R can not be processed with paste-through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your Lineage Power representative for more details. 11 Data Sheet April 3, 2012 JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output Mechanical Outline for Through-Hole Module Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.] *Top side label includes Lineage Power name, product designation, and data code. TOP VIEW* SIDE VIEW** BOTTOM VIEW Pin Description 1 Vin (+) 2 On/Off 3 Baseplate 4 Vin (-) 5 Vout (-) 6 Sense (-) 7 Trim 8 Sense (+) 9 Vout (+) LINEAGE POWER 12 Data Sheet April 3, 2012 JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output Recommended Pad Layout for Through Hole Module Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in. ] (Unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in. ] LINEAGE POWER 13 Data Sheet JRCW450R Power Modules; DC-DC Converters 36 - 75 Vdc Input; 32Vdc Output; 450W Output April 3, 2012 Ordering Information Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table 2. Device Code 48V (36-75Vdc) Output Voltage 32V Output Current 14A 48V (36-75Vdc) 32V 14A 48V (36-75Vdc) 32V 48V (36-75Vdc) 32V 48V (36-75Vdc) 48V (36-75Vdc) 48V (36-75Vdc) Input Voltage 94% Connector Type Through hole JRCW450R4Z CC109162054 94% Through hole JRCW450R41Z CC109153706 14A 94% Through hole JRCW450R541Z CC109168761 14A 94% Through hole JRCW450R41-TZ CC109164315 32V 14A 94% Through hole JRCW450R641-TZ CC109164397 32V 14A 94% Through hole JRCW450R841-TZ CC109166773 32V 14A 94% Through hole JRCW450R641-18Z CC109164777 Efficiency Product codes Comcodes Table 3. Device Options Asia-Pacific Headquarters Tel: +65 6593 7211 World Wide Headquarters Lineage Power Corporation 601 Shiloh Road, Plano, TX 75074, USA +1-800-526-7819 (Outside U.S.A.: +1-972-244-9428) www.lineagepower.com e-mail: techsupport1@lineagepower.com Europe, Middle-East and Africa Headquarters Tel: +49 89 878067-280 India Headquarters Tel: +91 80 28411633 Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents. (c) 2009 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved. Document No: DS09-011 ver 1.0 PDF name: JRCW450R.pdf