PTH12000W/L -- 12-V Input 6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module SLTS202E- MAY 2003 - REVISED NOVENBER 2007 Features NOMINAL SIZE = 0.75 in x 0.5 in (19,05 mm x 12,7 mm) * Up to 6-A Output Current * 12-V Input Voltage * Wide-Output Voltage Adjust (1.2 V to 5.5 V)/(0.8 V to 1.8 V) * 230 W/in Power Density * Efficiencies up to 92 % * Pre-Bias Startup * On/Off Inhibit * Under-Voltage Lockout * Output Over-Current Protection (Non-Latching, Auto-Reset) * Operating Temp: -40 to +85 C * Surface Mount Package * Safety Agency Approvals: UL/cUL 60950, EN60950 VDE Description Pin Configuration The PTH12000 series of non-isolated power modules are small in size and high on performance. Using double-sided surface mount construction and synchronous rectification technology, these regulators deliver up to 6 A of output current while occupying a PCB area of about half the size of a standard postage stamp. They are an ideal choice for applications where space, performance and cost are important design constraints. The series operates from an input voltage of 12 V to provide step-down power conversion to a wide range of output voltages. W-suffix devices are adjustable from 1.2 V to 5.5 V, and L-suffix devices are adjustable from 0.8 V to 1.8 V. The out- put voltage is set within the adjustment range using a single external resistor. Operating features include an on/off inhibit, output voltage adjust (trim), and the ability to start up into an existing output voltage or prebias. A non-latching over-current trip provides protection against load faults. Target applications include telecom, industrial, and general purpose circuits, including low-power dual-voltage systems that use a DSP, microprocessor, or ASIC. Package options include both throughhole and surface mount configurations. Pin 1 2 3 4 5 Function GND Vin Inhibit * Vo Adjust Vout * Denotes negative logic: Open = Output On Ground = Output Off Standard Application Rset = Required to set the output voltage higher than the lowest value (see spec. table for values). C1 = Required 100 F capacitor C2 = Optional 100 F capacitor C3 = Optional 10 F ceramic capacitor 1 2 Inhibit PTH12000x (Top View) 4 + C IN 100 F (Required) 3 GND For technical support and further information visit http://power.ti.com V OUT 5 C OUT 100 F (Optional) + V IN R SET, 1% (Required) GND PTH12000W/L -- 12-V Input 6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module SLTS202E- MAY 2003 - REVISED NOVENBER 2007 Ordering Information Output Voltage (PTH12000rxx) Package Options (PTH12000xrr) (1) Code W L Code Voltage 1.2 V - 5.5 V 0.8 V - 1.8 V (Adjust) (Adjust) AH AS Description Horiz. T/H SMD, Standard (3) Pkg Ref. (2) (EUS) (EUT) Notes: (1) Add "T" to end of part number for tape and reel on SMD packages only. (2) Reference the applicable package reference drawing for the dimensions and PC board layout (3) "Standard" option specifies 63/37, Sn/Pb pin solder material. Pin Descriptions Vin: The positive input voltage power node to the module, which is referenced to common GND. Vout: The regulated positive power output with respect to the GND node. GND: This is the common ground connection for the `Vin' and `Vout' power connections. It is also the 0 VDC reference for the `Inhibit' and `Vo Adjust' control inputs. Inhibit: The Inhibit pin is an open-collector/drain negative logic input that is referenced to GND. Applying a lowlevel ground signal to this input disables the module's output and turns off the output voltage. When the Inhibit control is active, the input current drawn by the regulator is significantly reduced. If the Inhibit pin is left opencircuit, the module will produce an output whenever a valid input source is applied. Environmental & Absolute Maximum Ratings Characteristics Symbols Operating Temperature Range Solder Reflow Temperature(AS) Solder Reflow Temperature(AZ) Wave SolderTemperature(AH/AD) Storage Temperature Mechanical Shock Ta Treflow Treflow TWave Ts Mechanical Vibration Weight Flammability -- -- Vo Adjust: A 1-% resistor must be connected between this pin and GND (pin 1) to set the output voltage of the module higher than its lowest value. The temperature stability of the resistor should be 100 ppm/C (or better). The set-point range is 1.2 V to 5.5 V for W-suffix devices, and 0.8 V to 1.8 V for L-suffix devices. The resistor value required for a given output voltage may be calculated using a formula. If left open circuit, the output voltage will default to its lowest value. For further information on output voltage adjustment consult the related application note. The specification tables also give the preferred resistor values for a number of standard output voltages. (Voltages are with respect to GND) Conditions Over Vin Range Surface temperature of module body or pins Surface temperature of module body or pins Surface temperature of module body or pins(5 seconds) -- Per Mil-STD-883D, Method 2002.3 1 msec, 1/2 sine, mounted Mil-STD-883D, Method 2007.2 20-2000 Hz Min Typ Max Units -40 (i) -- -55 -- +85 235 (ii) 260 (ii) 260 (ii) +125 C C C C C -- 500 -- G -- 15 -- G -- 2 -- grams Meets UL 94V-O Notes: (i) For operation below 0 C the external capacitors must have stable characteristics. Use either a low ESR tantalum, Oscon, or ceramic capacitor. (ii) During soldering of package version do not elevate peak temperature of the module, pins or internal components above the stated maximum. For technical support and further information visit http://power.ti.com PTH12000W -- 12-V Input 6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module Electrical Specifications SLTS202E- MAY 2003 - REVISED NOVENBER 2007 Unless otherwise stated, T a =25 C, Vin =12 V, V o =3.3 V, C 1 =100 F, C2 =0 F, C 3 =0 F, and Io =Iomax PTH12000W Characteristics Symbols Conditions Output Current Io Over Vadj range Input Voltage Range Set-Point Voltage Tolerance Temperature Variation Line Regulation Load Regulation Total Output Variation Vin Vo tol Regtemp Regline Regload Regtot Over Io range Ouput Voltage Adjust Range Efficiency Vadj Vo Ripple (pk-pk) Vr Transient Response Over-Current Threshold Under-Voltage Lockout ttr Vtr Io trip UVLO Inhibit Control (pin 3) Input High Voltage Input Low Voltage Input Low Current VIH VIL IIL Standby Input Current Switching Frequency External Input Capacitance External Output Capacitance Iin standby s Cin Cout Reliability MTBF Ta =60 C, 200 LFM Ta =25 C, natural convection -40 C <Ta < +85 C Over Vin range Over Io range Includes set-point, line, load, -40 C T a +85 C Over Vin range Vin =12 V, Io =4 A RSET = 280 Vo = 5.0 V RSET = 2.0 k Vo = 3.3 V RSET = 4.32 k Vo = 2.5 V RSET = 8.06 k Vo = 2.0 V RSET = 11.5 k Vo = 1.8 V RSET = 24.3 k Vo = 1.5 V RSET = open cct Vo = 1.2 V 20 MHz bandwidth, Io =4 A Vo 3.3 V C3 =10 F ceramic Vo 2.5 V 1 A/s load step, 50 to 100 % Iomax, Vo =1.8 V, C2 =100 F Recovery time Vo over/undershoot Reset followed by auto-recovery Vin increasing Vin decreasing Referenced to GND Pin 3 to GND pins 1 & 3 connected Over Vin and Io ranges Capacitance value non-ceramic ceramic Equiv. series resistance (non-ceramic) Per Bellcore TR-332 50 % stress, Ta =40 C, ground benign Min Typ Max Units 0 0 10.8 -- -- -- -- -- -- -- -- 0.5 5 5 6 (1) 6 (1) 13.2 2 (2) -- -- -- A V %Vo %Vo mV mV -- -- 3 (2) %Vo 1.2 -- -- -- -- -- -- -- -- -- -- 92 90 88 87 86 84 82 50 (3) 25 (3) 5.5 -- -- -- -- -- -- -- -- -- V -- -- -- -- 8.8 70 100 12 -- -- -- -- -- 10.4 -- Sec mV A Vin -0.5 -0.2 -- -- 300 100 (5) 0 0 4 (8) -- -- -240 1 350 -- 100 (6) -- -- Open (4) 0.5 -- -- 400 -- 3,300 (7) 300 -- V A mA kHz F F 9.4 -- -- 106 Hrs % mVpp V m Notes: (1) See SOA curves or consult factory for appropriate derating. (2) The set-point voltage tolerance is affected by the tolerance and stability ofR SET . The stated limit is unconditionally met if RSET has a tolerance of 1% with 100 ppm/C or better temperature stability. (3) The pk-pk output ripple voltage is measured with an external 10 F ceramic capacitor. See the standard application schematic. (4) The Inhibit control (pin 3) has an internal pull-up to Vin, and if left open-circuit the module will operate when input power is applied. A small lowleakage (<100 nA) MOSFET is recommended to control this input. See application notes for more information. (5) The regulator requires a minimum of 100 F input capacitor with a minimum 750 mArms ripple current rating. For further information, consult the related application note on Capacitor Recommendations. (6) An external output capacitor is not required for basic operation. Adding 100 F of distributed capacitance at the load will improve the transient response. (7) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the application notes for further guidance. (8) This is the typical ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 m as the minimum when using max-ESR values to calculate. For technical support and further information visit http://power.ti.com PTH12000W -- 12-V Input Typical Characteristics 6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module SLTS202E- MAY 2003 - REVISED NOVENBER 2007 PTH12000W Characteristic Data; Vin =12 V (See Note A) PTH12000W Safe Operating Area; Vin =12 V (See Note B) Output Voltage =5 V Efficiency vs Output Current 100 90 Efficiency - % 90 80 VOUT 80 Ai r f l ow 5.0 V 70 3.3 V 2.5 V 60 400LFM 200LFM 100LFM 1.8 V 70 Nat c onv 50 1.2 V 40 60 30 50 0 1 2 3 4 5 6 20 0 Iout -(A) 1 2 3 4 5 6 Io ut (A) Output Ripple vs Load Current (See Note 3 to Table) Output Voltage =3.3 V 100 90 Ripple - mV VOUT 5.0 V 3.3 V 2.5 V 1.8 V 1.2 V 60 40 20 Ambient Temperature (C) 80 80 Airflow 70 400LFM 200LFM 100LFM Nat conv 60 50 40 30 0 20 0 1 2 3 4 5 6 0 1 2 Iout (A) 4 5 6 Output Voltage 1.8 V Power Dissipation vs Output Current 90 3.0 VOUT 2.0 5.0 V 3.3 V 1.5 2.5 V 1.0 1.8 V 1.2 V 0.5 Ambient Temperature (C) 80 2.5 Pd - Watts 3 Iout (A) 70 Airflow 60 100LFM Nat conv 50 40 30 0.0 20 0 1 2 3 Iout - Amps 4 5 6 0 1 2 3 4 5 6 Iout (A) Note A: Characteristic data has been developed from actual products tested at 25C. This data is considered typical data for the Converter. Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer's maximum operating temperatures. Derating limits apply to modules soldered directly to a 4 in. x 4 in. double-sided PCB with 1 oz. copper. For technical support and further information visit http://power.ti.com PTH12000L -- 12-V Input 6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module Electrical Specifications SLTS202E- MAY 2003 - REVISED NOVENBER 2007 Unless otherwise stated, T a =25 C, Vin =12 V, V o =1.8 V, C 1 =100 F, C2 =0 F, C 3 =0 F, and Io =Iomax PTH12000L Characteristics Symbols Conditions Output Current Input Voltage Range Set-Point Voltage Tolerance Temperature Variation Line Regulation Load Regulation Total Output Variation Io Vin Vo tol Regtemp Regline Regload Regtot Over Vadj range, Over Io range Ouput Voltage Adjust Range Efficiency Vadj Vo Ripple (pk-pk) Vr Transient Response Over-Current Threshold Under-Voltage Lockout ttr Vtr Io trip UVLO Inhibit Control (pin 3) Input High Voltage Input Low Voltage Input Low Current VIH VIL IIL Standby Input Current Switching Frequency External Input Capacitance External Output Capacitance Iin standby s Cin Cout Reliability MTBF Ta =85 C, natural convection -40 C <Ta < +85 C Over Vin range Over Io range Includes set-point, line, load, -40 C T a +85 C Over Vin range Vin =12 V, Io =4 A RSET = 130 Vo = 1.8 V RSET = 3.57 k Vo = 1.5 V RSET = 12.1 k Vo = 1.2 V RSET = 32.4 k Vo = 1.0 V RSET = Open cctVo = 0.8 V 20 MHz bandwidth, Io =4 A Vo > 1.2 V C3 =10 F ceramic Vo 1.2 V 1 A/s load step, 50 to 100 % Iomax, Vo =1.8 V, C2 =100 F Recovery time Vo over/undershoot Reset followed by auto-recovery Vin increasing Vin decreasing Referenced to GND Pin 3 to GND pins 1 & 3 connected Over Vin and Io ranges Capacitance value non-ceramic ceramic Equiv. series resistance (non-ceramic) Per Bellcore TR-332 50 % stress, Ta =40 C, ground benign Min Typ Max Units 0 10.8 -- -- -- -- -- -- -- 0.5 5 5 6 13.2 2 (1) -- -- -- A V %Vo %Vo mV mV -- -- 3 (1) %Vo 0.8 -- -- -- -- -- -- -- -- 87 86 85 82 79 25 (2) 20 (2) 1.8 -- -- -- -- -- -- -- V -- -- -- -- 8.8 70 100 12 -- -- -- -- -- 10.4 -- Vin -0.5 -0.2 -- -- 200 100 (4) 0 0 4 (7) -- -- -240 1 250 -- 100 (5) -- -- Open (3) 0.5 -- -- 300 -- 3,300 (6) 300 -- A mA kHz F F 9.4 -- -- 106 Hrs % mVpp Sec mV A V V m Notes: (1) The set-point voltage tolerance is affected by the tolerance and stability ofR SET . The stated limit is unconditionally met if RSET has a tolerance of 1% with 100 ppm/C or better temperature stability. (2) The pk-pk output ripple voltage is measured with an external 10 F ceramic capacitor. See the standard application schematic. (3) The Inhibit control (pin 3) has an internal pull-up to Vin, and if left open-circuit the module will operate when input power is applied. A small lowleakage (<100 nA) MOSFET is recommended to control this input. See application notes for more information. (4) The regulator requires a minimum of 100 F input capacitor with a minimum 750 mArms ripple current rating. For further information, consult the related application note on Capacitor Recommendations. (5) An external output capacitor is not required for basic operation. Adding 100 F of distributed capacitance at the load will improve the transient response. (6) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the application notes for further guidance. (7) This is the typical ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 m as the minimum when using max-ESR values to calculate. For technical support and further information visit http://power.ti.com PTH12000L -- 12-V Input Typical Characteristics 6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module SLTS202E- MAY 2003 - REVISED NOVENBER 2007 PTH12000L Characteristic Data, Vin =12 V (See Note A) PTH12000L Safe Operating Area; Vin =12 V (See Note B) Output Voltage 1.8 V Efficiency vs Output Current 100 90 Efficiency (%) VOUT 1.8 V 1.5 V 1.2 V 1.0 V 0.8 V 80 70 60 Ambient Temperature (C) 80 90 Airflow 70 400LFM 200LFM 100LFM Nat conv 60 50 40 30 50 20 0 1 2 3 4 5 6 0 Output Current (A) 1 2 3 4 5 6 Output Current (A) Output Ripple vs Load Current (See Note 3 to Table) 50 Ripple (mVpp) 40 VOUT 1.8 V 1.5 V 1.2 V 1.0 V 0.8 V 30 20 10 0 0 1 2 3 4 5 6 Output Current (A) Power Dissipation vs Output Current 2 Power Dissipation (W) 1.6 VOUT 1.8 V 1.5 V 1.2 V 1.0 V 0.8 V 1.2 0.8 0.4 0 0 1 2 3 4 5 6 Output Current (A) Note A: Characteristic data has been developed from actual products tested at 25C. This data is considered typical data for the Converter. For technical support and further information visit http://power.ti.com Application Notes PTH12000 Series Capacitor Recommendations for the PTH12000 Wide-Output Adjust Power Modules Input Capacitor The recommended input capacitance is determined by the 100 F minimum capacitance and 750 mArms minimum ripple current rating. A 10-F X5R/X7R ceramic capacitor may also be added to reduce the reflected input ripple current [3]. The ceramic capacitor should be located between the input electrolytic and the module. Ripple current, less than 150 m equivalent series resistance (ESR) and temperature are major considerations when selecting input capacitors. Unlike polymer-tantalum capacitors, regular tantalum capacitors have a recommended minimum voltage rating of 2 x (max. DC voltage + AC ripple). This is standard practice to ensure reliability. No tantalum capacitors were found with sufficient voltage rating to meet this requirement. At temperatures below 0 C, the ESR of aluminum electrolytic capacitors increases. For these applications Os-Con, polymer-tantalum, and polymer-aluminum types should be considered. Output Capacitors (Optional) For applications with load transients (sudden changes in load current), regulator response will benefit from external output capacitance. The value of 100 F is used to define the transient response specification (see data sheet). For most applications, a high quality computer-grade aluminum electrolytic capacitor is adequate. These capacitors provide decoupling over the frequency range, 2 kHz to 150 kHz, and are suitable for ambient temperatures above 0 C. Below 0 C, tantalum, ceramic or Os-Con type capacitors are recommended. When using one or more non-ceramic capacitors, the calculated equivalent ESR should be no lower than 4 m (7 m using the manufacturer's maximum ESR for a single capacitor). A list of preferred low-ESR type capacitors are identified in Table 1-1. In addition to electrolytic capacitance, adding a 10-F X5R/X7R ceramic capacitor to the output will reduce the output ripple voltage and improve the regulator's transient response. The measurement of both the output ripple and transient response is also best achieved across a 10-F ceramic capacitor. Ceramic Capacitors Above 150 kHz the performance of aluminum electrolytic capacitors is less effective. Multilayer ceramic capacitors have very low ESR and a resonant frequency higher than the bandwidth of the regulator. They can be used to reduce the reflected ripple current at the input [3] and improve the transient response of the output. When used on the output their combined ESR is not critical as long as the total value of ceramic capacitance does not exceed 300 F. Also, to prevent the formation of local resonances, do not place more than five identical ceramic capacitors in parallel with values of 10 F or greater. For technical support and further information visit http://power.ti.com Tantalum Capacitors Tantalum type capacitors are most suited for use on the output bus, and are recommended for applications where the ambient operating temperature can be less than 0 C. The AVX TPS, Sprague 593D/594/595 and Kemet T495/ T510 capacitor series are suggested over other tantalum types due to their higher rated surge, power dissipation, and ripple current capability. As a caution many general purpose tantalum capacitors have considerably higher ESR, reduced power dissipation and lower ripple current capability. These capacitors are also less reliable as they have lower power dissipation and surge current ratings. Tantalum capacitors that do not have a stated ESR or surge current rating are not recommended for power applications. When specifying Os-con and polymer tantalum capacitors for the output, the minimum ESR limit will be encountered well before the maximum capacitance value is reached. Capacitor Table Table 1-1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple current (rms) ratings. The recommended number of capacitors required at both the input and output buses is identified for each capacitor type. This is not an extensive capacitor list. Capacitors from other vendors are available with comparable specifications. Those listed are for guidance. The RMS ripple current rating and ESR (at 100 kHz) are critical parameters necessary to insure both optimum regulator performance and long capacitor life. Designing for Very Fast Load Transients The transient response of the DC/DC converter has been characterized using a load transient with a di/dt of 1 A/s. The typical voltage deviation for this load transient is given in the data sheet specification table using the optional value of output capacitance. As the di/dt of a transient is increased, the response of a converter's regulation circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation with any DC/DC converter once the speed of the transient exceeds its bandwidth capability. If the target application specifies a higher di/dt or lower voltage deviation, the requirement can only be met with additional output capacitor decoupling. In these cases special attention must be paid to the type, value and ESR of the capacitors selected. If the transient performance requirements exceed that specified in the data sheet, the selection of output capacitors becomes more important. Application Notes continued PTH12000 Series Table 1-1: Input/Output Capacitors Capacitor Vendor/ Type Series (Style) Capacitor Characteristics Quantity Working Voltage Value (F) Max. ESR @ 100 kHz Max. Ripple at 85 C Current (Irms) Physical Size (mm) Input Bus Output Bus Panasonic, Aluminum FC (Radial) FK (SMD) 25 V 35 V 25 V 330 F 180 F 470 F 0.090 0.090 0.080 755 mA 755 mA 850 mA 10x12.5 10x12.5 10x10.2 1 1 1 1 1 1 United Chemi-con PXA, Poly-Aluminum (SMD) FP, Os-con (Radial) FS, Os-con (Radial) LXZ, Aluminum (Radial) 16 V 20 V 20 V 35 V 150 F 120 F 100 F 220 F 0.026 0.024 0.030 0.090 3430 mA 3100 mA 2740 mA 760 mA 10x7.7 8x10.5 8x10.5 10x12.5 1 1 1 1 4 4 4 1 Nichicon Aluminum HD, (Radial) PM, (Radial) 25 V 35 V 220 F 220 F 0.072 0.090 760 mA 770 mA 8x11.5 10x15 1 1 1 1 Panasonic, Poly-Aluminum: WA (SMD) S/SE (SMD) 16 V 6.3 V 100 F 180 F 0.039 0.005 2500 mA 4000 mA 8x6.9 7.3x4.3x4.2 1 N/R [2] Sanyo SVP, Os-con (SMD) SP, Os-con (Radial) TPE, Pos-Ccap (SMD) 20 V 20 V 10 V 100 F 120 F 220 F 0.024 0.024 0.025 >3300 mA >3100 mA >2400 mA 8x12 8x10.5 7.3x5.7 1 1 1 4 4 4 20SVP100M 20SP120M 10TPE220ML 10 V 10 V 25 V 100 F 220 F 68 F 0.100 0.100 0.095 >1090 mA >1414 mA >1451 mA 7.3L x4.3W x4.1H N/R [2] N/R [2] 2 5 5 5 TPSD107M010R0100 TPSV227M010R0100 TPSV686M025R0095 10 V 10 V 100 F 100 F 0.080 0.100 1200 mA >1100 mA 7.3Lx5.7W x4.0H N/R [2] N/R [2] 5 5 T520D107M010AS T495X107M010AS 10 V 25 V 16 V 150 F 68 F 100 F 0.090 0.095 0.070 1100 mA 1600 mA 2890 mA 7.3Lx6.0W x4.1H 10x10.5 N/R [2] 2 1 5 5 5 594D157X0010C2T 594D686X0025R2T 94SP107X0016FBP Kemet, Ceramic X5R (SMD) 16 V 6.3 V 10 F 47 F 0.002 0.002 -- 1 [3] N/R [2] C1210C106M4PAC 5 5 [1] C1210C476K9PAC (Vo 5.1V) Murata, Ceramic X5R (SMD) 6.3 V 6.3 V 16 V 16 V 100 F 47 F 22 F 10 F 0.002 -- 1210 case 3225 mm N/R [2] N/R [2] 1 [3] 1 [3] 3 [1] 5 [1] 5 5 GRM32ER60J107M (Vo 5.1V) GRM32ER60J476M (Vo 5.1V) GRM32ER61C226K GRM32DR61C106K TDK, Ceramic X5R (SMD) 6.3 V 6.3 V 16 V 16 V 100 F 47 F 22 F 10 F 0.002 -- 1210 case 3225 mm N/R [2] N/R [2] 1 [3] 1 [3] 3 [1] 5 [1] 5 5 C3225X5R0J107MT (Vo 5.1V) C3225X5R0J476MT (Vo 5.1V) C3225X5R1C226MT C3225X5R1C106MT AVX, Tantalum TPS (SMD) Kemet T520, Poy-Tant (SMD) T495, Tantalum (SMD) Vishay-Sprague 594D, Tantalum (SMD) 94SP, Organic (Radial) Vendor Number 1210 case 3225 mm EEUFC1E331 EEUFC1V181 EEVFK1E471P PXA16VC151MJ80TP 20FP120MG 20FS100M LXZ35VB221M10X12LL UHD1E221MPR UPM1V221MHH6 EEFWA1C101P 5 1 [1] EEFSE0J181R (Vo 5.1V) [1] The voltage rating of this capacitor only allows it to be used for output voltages that are equal to or less than 5.1 V [2] N/R -Not recommended. The capacitor voltage rating does not meet the minimum derated operating limits. [3] A ceramic capacitor may be used to complement electrolytic types at the input to further reduce high-frequency ripple current. For technical support and further information visit http://power.ti.com Application Notes PTH12000 Series Adjusting the Output Voltage of the PTH12000x Wide-Output Adjust Power Modules The Vo Adjust control (pin 4) sets the output voltage of the PTH12000 product. The adjustment range is from 1.2 V to 5.5 V for the W-suffix modules, and 0.8 V to 1.8 V for L-suffix modules. The adjustment method requires the addition of a single external resistor, R set, that must be connected directly between the Vo Adjust and GND pins 1. Table 2-1 gives the preferred value of the external resistor for a number of standard voltages, along with the actual output voltage that this resistance value provides. Figure 2-1 shows the placement of the required resistor. Figure 2-1; Vo Adjust Resistor Placement Table 2-1; Preferred Values of Rset for Standard Output Voltages Inhibit 5.009 V 3.294 V 2.503 V 2.010 V 1.801 V 1.506 V 1.200 V N/A N/A N/A N/A Rset N/A N/A N/A N/A 130 3.57 k 12.1 k 18.7 k 32.4 k 71.5 k Open Vout (Actual) N/A N/A N/A N/A 1.800 V 1.499 V 1.201 V 1.101 V 0.999 V 0.901 V 0.800 V For other output voltages the value of the required resistor can either be calculated, or simply selected from the range of values given in Table 2-3. The following formula may be used for calculating the adjust resistor value. Select the appropriate value for the parameters, Rs and Vmin, from Table 2.2. Rset = 10 k * 0.8 V Vout - Vmin - Rs Table 2.2; Adjust Formula Parameters Pt. No. V min Vmax Rs VIN PTH12000x Inhibit CIN 100F (Required) 3 VO 5 VOUT GND 1 RSET, 1 % COUT 100F (Optional) PTH12000L Vout (Actual) 280 2.0 k 4.32 k 8.06 k 11.5 k 24.3 k Open N/A N/A N/A N/A 2 + 5V 3.3 V 2.5 V 2V 1.8 V 1.5 V 1.2 V 1.1 V 1.0 V 0.9 V 0.8 V Rset VIN + PTH12000W Vout (Req'd) 4 VO Adj PTH12000W PTH12000L 1.2 V 5.5 V 1.82 k 0.8 V 1.8 V 7.87 k For technical support and further information visit http://power.ti.com k GND GND Notes: 1. A 0.05-W rated resistor may be used. The tolerance should be 1 %, with a temperature stability of 100 ppm/C or better. Place the resistor as close to the regulator as possible. Connect the resistor directly between pins 4 and 1 using dedicated PCB traces. 2. Never connect capacitors from Vo Adjust to either GND or Vout. Any capacitance added to the Vo Adjust pin will affect the stability of the regulator. Application Notes continued PTH12000 Series Table 2-3; Output Voltage Set-Point Resistor Values PTH12000W VOUT 1.200 1.225 1.250 1.275 1.300 1.325 1.350 1.375 1.400 1.425 1.450 1.475 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 2.05 2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 RSET Open 318.0 k 158.0 k 105.0 k 78.2 k 62.2 k 51.5 k 43.9 k 38.2 k 33.7 k 30.2 k 27.3 k 24.8 k 21.0 k 18.2 k 16.0 k 14.2 k 12.7 k 11.5 k 10.5 k 9.61 k 8.85 k 8.18 k 7.59 k 7.07 k 6.60 k 6.18 k 5.80 k 5.45 k 5.14 k 4.85 k 4.58 k 4.33 k 4.11 k 3.89 k 3.70 k VOUT 2.70 2.75 2.80 2.85 2.90 2.95 3.00 3.05 3.10 3.15 3.20 3.25 3.30 3.35 3.40 3.50 3.60 3.70 3.80 3.90 4.00 4.10 4.20 4.30 4.40 4.50 4.60 4.70 4.80 4.90 5.00 5.10 5.20 5.30 5.40 5.50 PTH12000L RSET 3.51 k 3.34 k 3.18 k 3.03 k 2.89 k 2.75 k 2.62 k 2.50 k 2.39 k 2.28 k 2.18 k 2.08 k 1.99 k 1.90 k 1.82 k 1.66 k 1.51 k 1.38 k 1.26 k 1.14 k 1.04 k 939 847 761 680 604 533 466 402 342 285 231 180 131 85 41 VOUT 0.800 0.825 0.850 0.875 0.900 0.925 0.950 0.975 1.000 1.025 1.050 1.075 1.100 1.125 1.150 1.175 1.200 1.225 1.250 1.275 1.300 1.325 1.350 1.375 1.400 1.425 1.450 1.475 1.50 1.55 1.60 1.65 1.70 1.75 1.80 RSET Open 312.0 k 152.0 k 98.8 k 72.1 k 56.1 k 45.5 k 37.8 k 32.1 k 27.7 k 24.1 k 21.2 k 18.8 k 16.7 k 15.0 k 13.5 k 12.1 k 11.0 k 9.91 k 8.97 k 8.13 k 7.37 k 6.68 k 6.04 k 5.46 k 4.93 k 4.44 k 3.98 k 3.56 k 2.8 k 2.13 k 1.54 k 1.02 k 551 130 For technical support and further information visit http://power.ti.com Application Notes PTH12000 Series Power-Up Characteristics When configured per the standard application, the PTH12000x power modules produce a regulated output voltage whenever of a valid input voltage is applied from Vin (pin 2), with respect to GND (pin 1). During the power-up period, internal soft-start circuitry slows the rate that the output voltage rises. This reduces the in-rush current drawn from the input source. The soft-start circuitry also introduces a short time delay (typically 12 ms) into the power-up characteristic. The delay is from the point that a valid input source is recognized, to the initial rise of the output voltage. Figure 3-1 shows the powerup characteristic of the PTH12000W with the output voltage set to 5-V. The waveforms were measured with a 2-A resistive load. The initial rise in input current when the input voltage first starts to rise is the charge current drawn by the input capacitors. Figure 3-1 The power modules function normally when the Inhibit pin is left open-circuit, providing a regulated output whenever a valid source voltage is connected to Vin with respect to GND. Figure 3-2 shows the typical application of the inhibit function. Note the discrete transistor (Q1). The Inhibit pin has its own internal pull-up to V in potential. An open-collector or open-drain device is recommended to control this input. Turning Q1 on applies a low voltage to the inhibit control and disables the output of the module. If Q1 is then turned off, the module will execute a soft-start power-up. A regulated output voltage is produced within 25 msec. Figure 3-3 shows the typical rise in both the output voltage and input current, following the turn-off of Q1. The turn off of Q1 corresponds to the rise in the waveform, Vinh. The waveforms were measured with a 5-V output and 2-A resistive load. Figure 3-2 Vin (5 V/Div) VIN 2 PTH12000W 3 + Iin (2 A/Div) 1 4 RSET 280 1% C IN 100 F VOUT 5 + Vo (5 V/Div) Co1 100 F Q1 BSS138 1 =Inhibit HORIZ SCALE: 5 ms/Div GND Over-Current Protection For protectection against load faults, this series incorporates output over-current protection. Applying a load that exceeds the module's over-current threshold will cause the regulated output to shut down. Following shut down the module will periodically attempt to recover by initiating a soft-start power-up. This is often described as a "hiccup" mode of operation, whereby the module continues in the cycle of successive shut down and power up until the load fault is removed. During this period, the average current flowing into the fault is significantly reduced. Once the fault is removed, the module automatically recovers and returns to normal operation. GND Figure 3-3 Vo (2 V/Div) Iin (1 A/Div) Vinh (10 V/Div) Output On/Off Inhibit The inhibit control (pin 3) is used wherever there is a requirement to turn off the regulator output while input power is applied. For technical support and further information visit http://power.ti.com HORIZ SCALE: 5 ms/Div L O A D Application Notes PTH12000 Series Pre-Bias Startup Capability The capability to start up into an output pre-bias condition is now a feature of the PTH12000 series of modules. (Note: This is a feature enhancement for the the W-suffix version; see note 1). the Inhibit pin is held low, and whenver the output is allowed to rise under soft-start control. Power up under soft-start control occurs upon the removal of the ground signal to the Inhibit pin (with input voltage applied), or when input power is applied. To further ensure that the regulator doesn't sink output current, (even with a ground signal applied to its Inhibit), the input voltage must always be greater than the applied pre-bias source. This condition must exist throughout the power-up sequence 3. A pre-bias startup condition occurs as a result of an external voltage being present at the output of a power module prior to its output becoming active. This often occurs in complex digital systems when current from another power source is backfed through a dual-supply logic component, such as an FPGA or ASIC. Another path might be via clamp diodes, sometimes used as part of a dual-supply power-up sequencing arrangement. A prebias can cause problems with power modules that incorporate synchronous rectifiers. This is because under most operating conditions, such modules can sink as well as source output current. The PTH12000x series of modules incorporate synchronous rectifiers, but will not sink current during startup, or whenever the Inhibit pin is held low. Startup includes an initial delay (approx. 8 - 15 ms), followed by the rise of the output voltage under the control of the module's internal soft-start mechanism; see Figure 3-1. The soft-start period is complete when the output begins rising above the pre-bias voltage. Once it is complete the module functions as normal, and will sink current if a voltage higher than the nominal regulation value is applied to its output. Note: If a pre-bias condition is not present, the soft-start period will be complete when the output voltage has risen to either the set-point voltage. Demonstration Circuit The circuit shown in Figure 3-4 is a demonstrates the pre-bias startup feature. Figure 3-5 shows the startup waveforms. The initial rise in Vo 2 is the pre-bias voltage, which is passed from the VCCIO to the VCORE voltage rail through the ASIC. Note that the output current from the PTH12000L module (Io2) is negligible until its output voltage rises above the applied pre-bias. Conditions for Pre-Bias Holdoff In order for the module to allow an output pre-bias voltage to exist (and not sink current), certain conditions must be maintained. The module holds off a pre-bias voltage when Figure 3-4; Application Circuit Demonstrating Pre-Bias Startup 10 9 VIN = 12 V 2 5 8 Up Dn Track Sense PTH12020W VIN Inhibit Adjust GND 3 7 1 VO 2 R3 11k0 PTH12000L VIN VO 5 Vo2 = 1.8 V + 8 Inh VCC 7 2 1 3 3 SENSE RESET 5 TL7702B REF RESET 6 CT C5 0.1 F C6 0.68 F 4 GND Adj 1 Io2 4 R2 130 RESIN 330 F VCCIO VCORE + C3 + C4 330 F GND R4 100k 330 F R1 2k 330 F Vo1 = 3.3 V +C 2 4 + C1 6 ASIC R5 10k0 For technical support and further information visit http://power.ti.com Application Notes PTH12000 Series Figure 3-5; Pre-Bias Startup Waveforms Vo 1 (1 V/Div) Vo 2 (1 V/Div) Hold-off Period Io 2 (2 A/Div) HORIZ SCALE: 5 ms/Div Notes 1. Output pre-bias holdoff has now been incorporated into the W-suffix modules (PTH12000W), with a production lot date code of "0423" or later. 2. To further ensure that the regulator's output does not sink current when power is first applied (even with a ground signal applied to the Inhibit control pin), the input voltage must always be greater than the applied pre-bias source. This condition must exist throughout the power-up sequence of the power system. For technical support and further information visit http://power.ti.com PTH12000 Tape & Reel and Tray Specification PACKAGE OPTION ADDENDUM www.ti.com 13-Nov-2010 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish PTH12000LAH ACTIVE ThroughHole Module EUS 5 56 Pb-Free (RoHS) SN PTH12000LAS ACTIVE Surface Mount Module EUT 5 49 TBD PTH12000LAST ACTIVE Surface Mount Module EUT 5 250 PTH12000LAZ ACTIVE Surface Mount Module EUT 5 PTH12000LAZT ACTIVE Surface Mount Module EUT PTH12000WAD ACTIVE ThroughHole Module PTH12000WAH ACTIVE PTH12000WAS MSL Peak Temp (3) Samples (Requires Login) N / A for Pkg Type Request Free Samples SNPB Level-1-235C-UNLIM/ Level-3-260C-168HRS Request Free Samples TBD SNPB Level-1-235C-UNLIM/ Level-3-260C-168HRS Purchase Samples 49 Pb-Free (RoHS) SNAGCU Level-3-260C-168 HR Request Free Samples 5 250 Pb-Free (RoHS) SNAGCU Level-3-260C-168 HR Purchase Samples EUS 5 56 Pb-Free (RoHS) SN N / A for Pkg Type Purchase Samples ThroughHole Module EUS 5 56 Pb-Free (RoHS) SN N / A for Pkg Type Request Free Samples ACTIVE Surface Mount Module EUT 5 49 TBD SNPB Level-1-235C-UNLIM/ Level-3-260C-168HRS Request Free Samples PTH12000WAST ACTIVE Surface Mount Module EUT 5 250 TBD SNPB Level-1-235C-UNLIM/ Level-3-260C-168HRS Purchase Samples PTH12000WAZ ACTIVE Surface Mount Module EUT 5 49 Pb-Free (RoHS) SNAGCU Level-3-260C-168 HR Request Free Samples PTH12000WAZT ACTIVE Surface Mount Module EUT 5 250 Pb-Free (RoHS) SNAGCU Level-3-260C-168 HR Purchase Samples (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 13-Nov-2010 Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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