Data Sheet September 13, 2010 16V Pico TLynxTM 4A: Non-Isolated DC-DC Power Modules 8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current Features Compliant to RoHS EU Directive 2002/95/EC (Z versions) Compatible in a Pb-free or SnPb reflow environment (Z versions) Wide Input voltage range (8Vdc-16Vdc) Output voltage programmable from 0.59Vdc to 8.0Vdc via external resistor RoHS Compliant Tunable LoopTM to optimize dynamic output voltage response Applications Remote sense Distributed power architectures Power Good signal Intermediate bus voltage applications Fixed switching frequency Telecommunications equipment Output overcurrent protection (non-latching) Servers and storage applications Overtemperature protection Networking equipment Remote On/Off Industrial equipment Ability to sink and source current Cost efficient open frame design Small size: 12.2 mm x 12.2 mm x 7.25 mm Vin+ VIN PGOOD Vout+ VOUT SENSE MODULE Cin (0.48 in x 0.48 in x 0.29 in) RTUNE CTUNE Q1 ON/OFF GND Co TRIM RTrim Wide operating temperature range (-40°C to 85°C) UL* Recognized to UL60950-1, CAN/CSA† C22.2 No. ‡ 60950-1-03, and EN60950-1(VDE 0805-1) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities Description The 16V Pico TLynxTM 4A power modules are non-isolated dc-dc converters that can deliver up to 4A of output current. These modules operate over a wide range of input voltage (VIN = 8Vdc-16Vdc) and provide a precisely regulated output voltage from 0.59Vdc to 8.0 Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over current and over temperature protection. A new feature, the Tunable LoopTM, 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: DS08-006 ver. 1.06 PDF name: APXK004A0X.pdf Data Sheet September 13, 2010 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current 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 All VIN -0.3 18 Vdc All TA -40 85 °C All Tstg -55 125 °C Input Voltage Up to 10 seconds Operating Ambient Temperature (see Thermal Considerations section) Storage Temperature Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All VIN 8.0 ⎯ 16.0 Vdc Maximum Input Current All IIN,max 6.5 Adc VO,set = 0.6 Vdc IIN,No load 18 mA VO,set = 8.0Vdc IIN,No load 96.1 mA Input Stand-by Current (VIN = 16.0Vdc, module disabled) All IIN,stand-by 1.2 mA Inrush Transient All It Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; VIN =0 to 16V, IO= IOmax ; See Test Configurations) All 50 mAp-p Input Ripple Rejection (120Hz) All -46 dB (VIN=8V to 16V, IO=IO, max ) Input No Load Current (VIN = 16.0Vdc, IO = 0, module enabled) 2 2 1 As 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 an integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 6 A (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 September 13, 2010 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Electrical Specifications (continued) Parameter Device Symbol Min Output Voltage Set-point (with 0.5% tolerance for external resistor used to set output voltage) All VO, set -1.5 Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) All VO, set -2.5 Adjustment Range (selected by an external resistor) (Some output voltages may not be possible depending on the input voltage – see Feature Descriptions Section) All VO 0.59 Remote Sense Range All Typ ⎯ Max Unit +1.5 % VO, set +2.5 % VO, set 8.0 Vdc 0.5 Vdc Output Regulation (for VO ≥ 2.5Vdc) Line (VIN=VIN, min to VIN, max) All ⎯ +0.4 % VO, set Load (IO=IO, min to IO, max) All ⎯ 10mV % VO, set Line (VIN=VIN, min to VIN, max) All ⎯ 10 mV Load (IO=IO, min to IO, max) All ⎯ 5 mV Temperature (Tref=TA, min to TA, max) All ⎯ 0.4 % VO, set 0.5 V 90 100 mVpk-pk 36 38 mVrms 22 μF Output Regulation (for VO < 2.5Vdc) Remote Sense Range Output Ripple and Noise on nominal output All (VIN=VIN, nom and IO=IO, min to IO, max Co = 0.1μF // 10 μF ceramic capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) All RMS (5Hz to 20MHz bandwidth) All External Capacitance ⎯ 1 Without the Tunable Loop TM ESR ≥ 1 mΩ With the Tunable Loop All CO, max 0 ⎯ ⎯ 470 μF ⎯ 3000 μF 4 Adc TM ESR ≥0.15 mΩ All CO, max 0 ESR ≥ 10 mΩ All CO, max 0 All Io 0 All IO, lim 200 % Io,max All IO, s/c 200 mArms VO,set = 0.6Vdc η 74.2 % Output Current (in either sink or source mode) Output Current Limit Inception (Hiccup Mode) (current limit does not operate in sink mode) Output Short-Circuit Current (VO≤250mV) ( Hiccup Mode ) Efficiency VIN= 12Vdc, TA=25°C VO, set = 1.2Vdc η 83.7 % IO=IO, max , VO= VO,set VO,set = 1.8Vdc η 87.7 % VO,set = 2.5Vdc η 90.2 % VO,set = 3.3Vdc η 91.7 % VO,set = 5.0Vdc η 93.7 % VO,set = 6.5Vdc η 94.9 % Switching Frequency 1 VO,set = 8.0Vdc η All fsw 96.1 ⎯ 600 % kHz ⎯ TM External capacitors may require using the new Tunable Loop feature to ensure that the module is stable as well as TM getting the best transient response. See the Tunable Loop section for details. LINEAGE POWER 3 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 General Specifications Parameter Calculated MTBF (IO=0.8IO, max, TA=40°C) Telcordia Issue 2 Method 1 Case 3 Min Typ Max Unit Hours 14,353,850 Weight 1.92 (0.0677) ⎯ g (oz.) ⎯ 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 Input High Current All IIH Input High Voltage All VIH Min Typ Max Unit ⎯ 10 µA ⎯ VIN,max V On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, Signal referenced to GND) Device is with suffix “4” – Positive Logic (See Ordering Information) Logic High (Module ON) 3.5 Logic Low (Module OFF) Input Low Current All IIL ⎯ ⎯ 1 mA Input Low Voltage All VIL -0.3 ⎯ 0.8 V Input High Current All IIH ― ― 1 mA Input High Voltage All VIH 3.5 ― VIN, max Vdc Device Code with no suffix – Negative Logic (See Ordering Information) (On/OFF pin is open collector/drain logic input with external pull-up resistor; signal referenced to GND) Logic High (Module OFF) Logic Low (Module ON) Input low Current All IIL ― ― 10 μA Input Low Voltage All VIL -0.2 ― 0.3 Vdc Case 1: On/Off input is enabled and then input power is applied (delay from instant at which VIN = VIN, min until Vo = 10% of Vo, set) All Tdelay ― 2 ― msec Case 2: Input power is applied for at least one second and then the On/Off input is enabled (delay from instant at which Von/Off is enabled until Vo = 10% of Vo, set) All Tdelay ― 2 ― msec Output voltage Rise time (time for Vo to rise from 10% of Vo, set to 90% of Vo, set) All Trise ― 4 ― msec 3 % VO, set Turn-On Delay and Rise Times (VIN=VIN, nom, IO=IO, max , VO to within ±1% of steady state) o Output voltage overshoot (TA = 25 C VIN= VIN, min to VIN, max,IO = IO, min to IO, max) With or without maximum external capacitance Over Temperature Protection All Tref 140 °C (See Thermal Considerations section) LINEAGE POWER 4 Data Sheet September 13, 2010 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Feature Specifications (cont.) Parameter Device Symbol Min Typ Max Units 4.0 Vdc Input Undervoltage Lockout Turn-on Threshold All Turn-off Threshold All 3.6 Vdc Hysteresis All 0.4 Vdc Output Voltage Limit for PGOOD All 90% Pulldown resistance of PGOOD pin All PGOOD (Power Good) Signal Interface Open Drain, Vsupply ≤ 5VDC LINEAGE POWER 7 110% VO, set 50 Ω 5 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Characteristic Curves The following figures provide typical characteristics for the 16V Pico TLynxTM 4A at 0.6Vo and at 25oC. 4.5 85 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 80 75 70 Vin=8V 65 60 55 50 0 1 2 3 LINEAGE POWER 0.5 30 40 50 60 70 80 90 AMBIENT TEMPERATURE, TA C OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (2Adiv) OUTPUT CURRENT, TIME, t (20μs /div) Vin (V) (10v/div) VO (V) (200MV/div) Figure 4. Transient Response to Dynamic Load Change from 0% to 50% to 0% . INPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (200mV/div) Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max, VIN = 8V) 1.5 Figure 2. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT VOLTAGE VO (V) (10mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE TIME, t (2 ms/div) 2.5 O Figure 1. Converter Efficiency versus Output Current. Figure 3. Typical output ripple and noise (VIN = 8V, Io = Io,max). NC 20 4 OUTPUT CURRENT, IO (A) TIME, t (1μs/div) 3.5 TIME, t (2 ms/div) Figure 6. Typical Start-up Using Input Voltage (VIN = 8V, Io = Io,max). 6 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Characteristic Curves The following figures provide typical characteristics for the 16V Pico TLynxTM 4A at 1.2Vo and at 25oC. 90 4.5 OUTPUT CURRENT, Io (A) 85 EFFICIENCY, η (%) 80 75 Vin=8V Vin=12V 70 Vin=16V 65 60 55 50 0 1 2 3 30 40 50 60 70 80 90 OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (2Adiv) OUTPUT CURRENT, TIME, t (20μs /div) VIN (V) (10V/div) V0 (V) (500mV/div) Figure 10. Transient Response to Dynamic Load Change from 0% to 50% to 0%. INPUT VOLTAGE VON/OFF (V) (5V/div) VO(V) (500mV/div) LINEAGE POWER 0.5 Figure 8. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT VOLTAGE VO (V) (10mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max ,VIN = 8V). 1.5 AMBIENT TEMPERATURE, TA C Figure 7. Converter Efficiency versus Output Current. TIME, t (2 ms/div) 2.5 O OUTPUT CURRENT, IO (A) Figure 9. Typical output ripple and noise (VIN = 12V, Io = Io,max). NC 20 4 TIME, t (1μs/div) 3.5 TIME, t (2 ms/div) Figure 12. Typical Start-up Using Input Voltage (VIN = 8V, Io = Io,max). 7 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Characteristic Curves The following figures provide typical characteristics for the 16V Pico TLynxTM 4A at 1.8Vo and at 25oC. 95 4.5 OUTPUT CURRENT, Io (A) 90 EFFICIENCY, η (%) 85 80 75 Vin=8V 70 Vin=12V Vin=16V 65 60 55 50 0 1 2 3 LINEAGE POWER 0.5 30 40 50 60 70 80 90 IO (A) (2Adiv) OUTPUT VOLTAGE OUTPUT CURRENT, VO (V) (500mV/div) Figure 14. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (20μs /div) INPUT VOLTAGE VIN (V) (10V/div) V0 (V) (500mV/div) Figure 16. Transient Response to Dynamic Load Change from 0% to 50% to 0%. OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE VON/OFF (V) (5V/div) ON/OFF VOLTAGE OUTPUT VOLTAGE VO(V) (500mV/div) Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max). 1.5 AMBIENT TEMPERATURE, TA C Figure 13. Converter Efficiency versus Output Current. TIME, t (2 ms/div) 2.5 O OUTPUT CURRENT, IO (A) Figure 15. Typical output ripple and noise (VIN = 12V, Io = Io,max). NC 20 4 TIME, t (1μs/div) 3.5 TIME, t (2 ms/div) Figure 18. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 8 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Characteristic Curves The following figures provide typical characteristics for the 16V Pico TLynxTM 4A at 2.5Vo and at 25oC. 95 4.5 OUTPUT CURRENT, Io (A) 90 EFFICIENCY, η (%) 85 80 Vin=8V 75 Vin=12V Vin=16V 70 65 60 55 50 0 1 2 3 30 40 50 60 70 80 90 OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (2Adiv) TIME, t (20μs /div) VIN (V) (10V/div) V0 (V) (1V/div) INPUT VOLTAGE Figure 22. Transient Response to Dynamic Load Change from 0% to 50% to 0%. OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO(V) (1V/div) LINEAGE POWER 0.5 AMBIENT TEMPERATURE, TA C OUTPUT CURRENT, VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max). 1.5 Figure 20. Derating Output Current versus Ambient Temperature and Airflow. Figure 19. Converter Efficiency versus Output Current. TIME, t (2 ms/div) 2.5 O OUTPUT CURRENT, IO (A) Figure 21. Typical output ripple and noise (VIN = 12V, Io = Io,max). NC 20 4 TIME, t (1μs/div) 3.5 TIME, t (2 ms/div) Figure 24. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 9 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Characteristic Curves The following figures provide typical characteristics for the 16V Pico TLynxTM 4A at 3.3Vo and at 25oC. 95 4.5 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 90 85 Vin=8V 80 Vin=12V Vin=16V 75 70 0 1 2 3 30 40 50 60 70 80 90 OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (2Adiv) OUTPUT CURRENT, TIME, t (20μs /div) VIN (V) (10V/div) V0 (V) (1V/div) Figure 28. Transient Response to Dynamic Load Change from 0% 50% to 0%. INPUT VOLTAGE VON/OFF (V) (5V/div) VO(V) (1V/div) LINEAGE POWER 0.5 AMBIENT TEMPERATURE, TA C OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max). 1.5 Figure 26. Derating Output Current versus Ambient Temperature and Airflow. Figure 25. Converter Efficiency versus Output Current. TIME, t (2ms/div) 2.5 O OUTPUT CURRENT, IO (A) Figure 27. Typical output ripple and noise (VIN = 12V, Io = Io,max). NC 20 4 TIME, t (1μs/div) 3.5 TIME, t (2ms/div) Figure 30. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 10 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Characteristic Curves The following figures provide typical characteristics for the 16V Pico TLynxTM 4A at 5.0 Vo and at 25oC. 100 4.5 OUTPUT CURRENT, Io (A) 95 EFFICIENCY, η (%) 90 85 80 Vin=8V 75 Vin=16V Vin=12V 70 65 60 55 0 1 2 3 LINEAGE POWER 0.5 30 40 50 60 70 80 90 AMBIENT TEMPERATURE, TA C OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (2Adiv) OUTPUT CURRENT, TIME, t (20μs /div) OUTPUT VOLTAGE VIN (V) (10V/div) INPUT VOLTAGE Figure 34. Transient Response to Dynamic Load Change from 0% 50% to 0%. V0 (V) (2V/div) VO (V) (50mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE VON/OFF (V) (5V/div) VO(V) (2V/div) OUTPUT VOLTAGE Figure 35. Typical Start-up Using On/Off Voltage (Io = Io,max). 1.5 Figure 31. Derating Output Current versus Ambient Temperature and Airflow. Figure 31. Converter Efficiency versus Output Current. TIME, t (2ms/div) 2.5 O OUTPUT CURRENT, IO (A) Figure 33. Typical output ripple and noise (VIN = 12V, Io = Io,max). NC 20 4 TIME, t (1μs/div) 3.5 TIME, t (2ms/div) Figure 36. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 11 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Characteristic Curves The following figures provide typical characteristics for the 16V Pico TLynxTM 4A at 6.5 Vo and at 25oC. 100 4.5 OUTPUT CURRENT, Io (A) 95 Vin=8V Vin=16V 70 65 60 55 0 1 2 3 OUTPUT CURRENT, IO (A) LINEAGE POWER 30 40 50 60 70 80 90 Figure 38. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (20μs /div) OUTPUT VOLTAGE Figure 40. Transient Response to Dynamic Load Change from 0% 50% to 0%. OUTPUT VOLTAGE INPUT VOLTAGE Figure 41. Typical Start-up Using On/Off Voltage (Io = Io,max). 0.5 O OUTPUT CURRENT, VO (V) (50mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE VON/OFF (V) (5V/div) VO(V) (2V/div) OUTPUT VOLTAGE TIME, t (2ms/div) 1.5 AMBIENT TEMPERATURE, TA C Figure 37. Converter Efficiency versus Output Current. Figure 39. Typical output ripple and noise (VIN = 12V, Io = Io,max). 2.5 20 4 TIME, t (1μs/div) NC VO (V) (500mV/div) Vin=12V 75 3.5 VIN (V) (10V/div) 80 V0 (V) (2V/div) 85 IO (A) (2Adiv) EFFICIENCY, η (%) 90 TIME, t (2ms/div) Figure 42. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 12 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Characteristic Curves The following figures provide typical characteristics for the 16V Pico TLynxTM 4A at 8.0Vo and at 25oC. 100 4.5 OUTPUT CURRENT, Io (A) 95 EFFICIENCY, η (%) 90 85 80 Vin=10V 75 Vin=16V Vin=12V 70 65 60 55 0 1 2 3 30 40 50 60 70 80 90 OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (2Adiv) OUTPUT CURRENT, TIME, t (20μs /div) VIN (V) (10V/div) V0 (V) (2V/div) Figure 46. Transient Response to Dynamic Load Change from 0% 50% to 0%. INPUT VOLTAGE VO(V) (2V/div) LINEAGE POWER 0.5 Figure 44. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT VOLTAGE VO (V) (50mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE VON/OFF (V) (5V/div) OUTPUT VOLTAGE Figure 47. Typical Start-up Using On/Off Voltage (Io = Io,max). 1.5 AMBIENT TEMPERATURE, TA C Figure 43. Converter Efficiency versus Output Current. TIME, t (2ms/div) 2.5 O OUTPUT CURRENT, IO (A) Figure 45. Typical output ripple and noise (VIN = 12V, Io = Io,max). NC 20 4 TIME, t (1μs/div) 3.5 TIME, t (2ms/div) Figure 48. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 13 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Design Considerations CURRENT PROBE TO OSCILLOSCOPE LTEST VIN(+) BATTERY 1μH CIN CS 1000μF Electrolytic 2x100μF Tantalum E.S.R.<0.1Ω @ 20°C 100kHz COM NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1μH. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 49. Input Reflected Ripple Current Test Setup. COPPER STRIP RESISTIVE LOAD Vo+ 10uF 0.1uF COM SCOPE USING BNC SOCKET GROUND PLANE NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance. Figure 50. Output Ripple and Noise Test Setup Rdistribution Rcontact Rcontact VIN(+) Rdistribution VO Input Filtering The 16V Pico TLynxTM 4A module should be connected to a low ac-impedance source. A highly inductive source can affect the stability of the module. An input capacitance must be placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. To minimize input voltage ripple, ceramic capacitors are recommended at the input of the module. Figure 52 shows the input ripple voltage for various output voltages at 4A of load current with 1x10 µF or 1x22 µF ceramic capacitors and an input of 12V. Input Ripple Voltage (mVp-p) Test Configurations 350 300 250 200 150 1x10uF 100 1x22uF 50 0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 Output Voltage (Vdc) Figure 52. Input ripple voltage for various output voltages with 1x10 µF or 1x22 µF ceramic capacitors at the input (4A load). Input voltage is 12V. Output Filtering Rdistribution RLOAD VO VIN Rcontact Rcontact COM Rdistribution COM NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance. Figure 51. Output Voltage and Efficiency Test Setup. VO. IO Efficiency η = LINEAGE POWER VIN. IIN x 100 % The 16V Pico TLynxTM 4A modules are designed for low output ripple voltage and will meet the maximum output ripple specification with 0.1 µF ceramic and 10 µF ceramic capacitors at the output of the module. However, additional output filtering may be required by the system designer for a number of reasons. First, there may be a need to further reduce the output ripple and noise of the module. Second, the dynamic response characteristics may need to be customized to a particular load step change. To reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at the output can be used. Low ESR polymer and ceramic capacitors are recommended to improve the dynamic response of the module. Figure 53 provides output ripple information for different external capacitance values at various Vo and for a load current of 4A. For stable operation of the module, limit the capacitance to less than the maximum output 14 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Ripple (mVp-p) capacitance as specified in the electrical specification table. Optimal performance of the module can be TM achieved by using the Tunable Loop feature described later in this data sheet. 100 90 80 70 60 50 40 30 20 10 0 1x10uF 1x47uF 2x47uF 4x47uF 0.5 2.5 4.5 Output Voltage(Volts) External External External External Cap Cap Cap Cap 6.5 Figure 53. Output ripple voltage for various output voltages with external 1x10 µF, 1x47 µF, 2x47 µF or 4x47 µF ceramic capacitors at the output (4A load). Input voltage is 12V. Feature Descriptions Remote Enable The 16V Pico TLynxTM 4A power modules feature an On/Off pin for remote On/Off operation. Two On/Off logic options are available. In the Positive Logic On/Off option, (device code suffix “4” – see Ordering Information), the module turns ON during a logic High on the On/Off pin and turns OFF during a logic Low. With the Negative Logic On/Off option, (no device code suffix, see Ordering Information), the module turns OFF during logic High and ON during logic Low. The On/Off signal is always referenced to ground. For either On/Off logic option, leaving the On/Off pin disconnected will turn the module ON when input voltage is present. For positive logic modules, the circuit configuration for using the On/Off pin is shown in Figure 54. VIN+ Safety Considerations For safety agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards, i.e., UL 60950-1, CSA C22.2 No. 60950-103, and VDE 0850:2001-12 (EN60950-1) Licensed. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a fastacting fuse with a maximum rating of 6A in the positive input lead. MODULE Rpullup 1.5MEG I ON/OFF ON/OFF 2.05K + PWM Enable VON/OFF Q1 GND _ Figure 54. Circuit configuration for using positive On/Off logic. For negative logic On/Off modules, the circuit configuration is shown in Fig. 55. VIN+ MODULE Rpullup 1.5MEG I ON/OFF ON/OFF + VON/OFF 22K Q2 GND 22K PWM Enable Q1 _ Figure 55. Circuit configuration for using negative On/Off logic. LINEAGE POWER 15 Data Sheet September 13, 2010 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current 5.91 Rtrim = kΩ (Vo − 0.591) Overcurrent Protection To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit operates normally once the output current is brought back into its specified range. Rtrim is the external resistor in kΩ Vo is the desired output voltage. Table 1 provides Rtrim values required for some common output voltages. Table 1 Overtemperature Protection VO, set (V) 0.6 1.0 1.2 1.5 1.8 2.5 3.3 5.0 6.5 8.0 To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will o shutdown if the overtemperature threshold of 140 C is exceeded at the thermal reference point Tref . The thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. Once the unit goes into thermal shutdown it will then wait to cool before attempting to restart. Input Undervoltage Lockout At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold. Output Voltage Programming The output voltage of the 16V Pico TLynxTM 4A modules can be programmed to any voltage from 0.59dc to 8.0Vdc by connecting a resistor between the Trim and GND pins of the module. Certain restrictions apply on the output voltage set point depending on the input voltage. These are shown in the Output Voltage vs. Input Voltage Set Point Area plot in Fig. 56. 18 Input Voltage (v) 16 14 Rtrim (KΩ) 656.7 14.45 9.704 6.502 4.888 3.096 2.182 1.340 1.000 0.798 By using a ±0.5% tolerance trim resistor with a TC of ±100ppm, a set point tolerance of ±1.5% can be achieved as specified in the electrical specification. Remote Sense The 16V Pico TLynxTM 4A power modules have a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the SENSE pin. The voltage between the SENSE pin and VOUT pin must not exceed 0.5V. Note that the output voltage of the module cannot exceed the specified maximum value. This includes the voltage drop between the SENSE and Vout pins. When the Remote Sense feature is not being used, connect the SENSE pin to the VOUT pin. 12 10 V IN(+) 8 VO (+) 6 SENSE 4 ON/OFF 2 LOAD TRIM 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 Output Voltage (V) Figure 56. Output Voltage vs. Input Voltage Set Point Area plot showing limits where the output voltage can be set for different input voltages. Without an external resistor between Trim and GND pins, the output of the module will be 0.59Vdc. To calculate the value of the trim resistor, Rtrim for a desired output voltage, use the following equation: LINEAGE POWER R tri m GND Figure 57. Circuit configuration for programming output voltage using an external resistor. 16 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Voltage Margining Output voltage margining can be implemented in the 16V Pico TLynxTM 4A modules by connecting a resistor, Rmargin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to output pin for margining-down. Figure 10 shows the circuit configuration for output voltage margining. The POL Programming Tool, available at www.lineagepower.com under the Design Tools section, also calculates the values of Rmargin-up and Rmargin-down for a specific output voltage and % margin. Please consult your local Lineage Power technical representative for additional details. Vo Rmargin-down MODULE Q2 Trim Rmargin-up Rtrim Q1 GND Figure 58. Circuit Configuration for margining Output voltage. Monotonic Start-up and Shutdown The 16V Pico TLynxTM 4A modules have monotonic start-up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. Startup into Pre-biased Output The 16V Pico TLynxTM 4A modules can start into a prebiased output as long as the prebias voltage is 0.5V less than the set output voltage. Note that prebias operation is not supported when output voltage sequencing is used. Power Good The 16V Pico TLynxTM 4A modules provide a Power Good (PGOOD) signal that is implemented with an open-drain output to indicate that the output voltage is within the regulation limits of the power module. The PGOOD signal will be de-asserted to a low state if any condition such as overtemperature, overcurrent or loss of regulation occurs that would result in the output voltage going ±10% outside the setpoint value. The PGOOD terminal should be connected through a LINEAGE POWER pullup resistor (suggested value 100KΩ) to a source of 5VDC or lower. Tunable LoopTM The 16V Pico TLynxTM 4A 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 (see Fig. 53) 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. The Tunable LoopTM 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 between the SENSE and TRIM pins of the module, as shown in Fig. 59. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module. VOUT SENSE RTUNE MODULE CO CTUNE TRIM GND RTrim Figure. 59. Circuit diagram showing connection of RTUME and CTUNE to tune the control loop of the module. Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 2 and 3. Table 2 shows the recommended values of RTUNE and CTUNE for different values of ceramic output capacitors up to 470μF that might be needed for an application to meet output ripple and noise requirements. Selecting RTUNE and CTUNE according to Table 2 will ensure stable operation of the module. In applications with tight output voltage limits in the presence of dynamic current loading, additional output capacitance will be required. Table 3 lists recommended values of RTUNE and CTUNE in order to meet 2% output voltage deviation limits for some 17 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 common output voltages in the presence of a 2A to 4A step change (50% of full load), with an input voltage of 16V. 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 or input voltages other than 16V. Table 2. General recommended values of of RTUNE and CTUNE for Vin=12V and various external ceramic capacitor combinations. Vo=6.5 Co 1x47μF 2x47μF 4x47μF 6x47μF 10x47μF RTUNE CTUNE 150 150 2700pF 5600pF 100 10nF 75 12nF 75 18nF Vo=1.8 Co 1x47μF 2x47μF 4x47μF 6x47μF 10x47μF RTUNE CTUNE 100 6800pF 75 12nF 75 18nF 75 18nF 75 18nF Table 3. Recommended values of RTUNE and CTUNE to obtain transient deviation of ≤2% of Vout for a 2A step load with Vin=16V. Vo Co 8V 6.5V 5V 3.3V 2.5V 1x47μF 2x47μF 2x47μF 2x47μF 3x47μF 4x47μF RTUNE 150 150 100 100 75 CTUNE 2700pF 5600pF 6900pF 8200pF 12nF ΔV 160mV 87mV 69mV 61mV 43mV Vo Co RTUNE CTUNE ΔV 1.8V 1.2V 75 18nF 33mV 0.6V 1x47μF 1x + 330μF 2 Polymer x330μF Polymer 75 75 56nF 100nF 21mV 11.4mV LINEAGE POWER 18 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Thermal Considerations Power modules operate in a variety of thermal environments; however, sufficient cooling should always be provided to help ensure reliable operation. 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. The test setup is shown in Figure 60. The preferred airflow direction for the module is in Figure 61. 25.4_ (1.0) Wind Tunnel PWBs Figure 61. Preferred airflow direction and location of hot-spot of the module (Tref). Power Module 76.2_ (3.0) x 12.7_ (0.50) Probe Location for measuring airflow and ambient temperature Air flow Figure 60. Thermal Test Setup. The thermal reference points, Tref used in the specifications are also shown in Figure 60. For reliable operation the temperatures at these points should not exceed 120oC. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). Please refer to the Application Note “Thermal Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. LINEAGE POWER 19 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Example Application Circuit Requirements: Vin: Vout: Iout: 16V 1.8V 3A max., worst case load transient is from 2A to 3A ΔVout: Vin, ripple 1.5% of Vout (27mV) for worst case load transient 1.5% of Vin (240mV, p-p) Vin+ VIN Vout+ VOUT SENSE RTUNE + CI2 MODULE CI1 CTUNE Q3 ON/OFF GND CO1 TRIM RTrim CI1 10μF/25V ceramic capacitor (e.g. Murata GRM31CR61E106KA12) CI2 100μF/25V bulk electrolytic CO1 CTune RTune 4 x 47μF/10V ceramic capacitor (e.g. Murata GRM32ER61A476KE20) 18nF/50V ceramic capacitor (can be 1206, 0805 or 0603 size) 75 ohms SMT resistor (can be 1206, 0805 or 0603 size) RTrim 4.87kΩ SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%) LINEAGE POWER 20 Data Sheet September 13, 2010 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Mechanical Outline 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.) NC PIN 7 LINEAGE POWER PIN 8 PIN FUNCTION 1 ON/OFF 2 VIN 3 GND 4 VOUT 5 SENSE 6 TRIM 7 GND 8 NC 9 NC 10 PGOOD 21 Data Sheet September 13, 2010 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Recommended Pad Layout 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.) NC LINEAGE POWER PIN FUNCTION 1 ON/OFF 2 VIN 3 GND 4 VOUT 5 SENSE 6 TRIM 7 GND 8 NC 9 NC 10 PGOOD 22 Data Sheet September 13, 2010 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Packaging Details The 16V Pico TLynxTM 4A modules are supplied in tape & reel as standard. Modules are shipped in quantities of 400 modules per reel. All Dimensions are in millimeters and (in inches). Reel Dimensions: Outside Dimensions: Inside Dimensions: Tape Width: LINEAGE POWER 330.2 mm (13.00) 177.8 mm (7.00”) 24.00 mm (0.945”) 23 Data Sheet September 13, 2010 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Surface Mount Information MSL Rating Pick and Place The 16V Pico TLynxTM 4A modules have a MSL rating of 2. Nozzle Recommendations The module weight has been kept to a minimum by using open frame construction. Variables such as nozzle size, tip style, vacuum pressure and placement speed should be considered to optimize this process. The minimum recommended inside nozzle diameter for reliable operation is 3mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 7 mm. Lead Free Soldering TM The 16V Pico TLynx 4A modules are lead-free (Pb-free) and RoHS compliant and fully compatible in a Pb-free soldering process. Failure to observe the instructions below may result in the failure of or cause damage to the modules and can adversely affect long-term reliability. Pb-free Reflow Profile Power Systems will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-air-convection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Fig. 62. Soldering outside of the recommended profile requires testing to verify results and performance. LINEAGE POWER Storage and Handling The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of ≤ 30°C and 60% relative humidity varies according to the MSL rating (see J-STD033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40° C, < 90% relative humidity. 300 Per J-STD-020 Rev. C Peak Temp 260°C 250 Reflow Temp (°C) The 16V Pico TLynxTM 4A modules use an open frame construction and are designed for a fully automated assembly process. The modules are fitted with a label designed to provide a large surface area for pick and place operations. The label meets all the requirements for surface mount processing, as well as safety standards, and is able to withstand reflow temperatures of up to 300oC. The label also carries product information such as product code, serial number and the location of manufacture. 200 150 * Min. Time Above 235°C 15 Seconds Heating Zone 1°C/Second Cooling Zone *Time Above 217°C 60 Seconds 100 50 0 Reflow Time (Seconds) Figure 62. Recommended linear reflow profile using Sn/Ag/Cu solder. Post Solder Cleaning and Drying Considerations 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 Board Mounted Power Modules: Soldering and Cleaning Application Note (AN04-001). 24 16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules 8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current Data Sheet September 13, 2010 Ordering Information Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table 4. Device Codes Device Code Input Voltage Range Output Voltage Output Current On/Off Logic Sequencing Comcodes APXK004A0X-SRZ 8.0 – 16Vdc 0.59 – 8.0Vdc 4A Negative No CC109146651 APXK004A0X4-SRZ 8.0 – 16Vdc 0.59 – 8.0Vdc 4A Positive No CC109146643 Table 5. Coding Scheme TLynx family Sequencing feature. Input voltage range Output current Output voltage On/Off logic Options ROHS Compliance AP X K 004A0 X 4 -SR Z X = w/o Seq. K = 8.0 - 16V 4.0A X= programmable output S = Surface Mount R = Tape&Reel Z = ROHS6 4 = positive No entry = negative 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: [email protected] Europe, Middle-East and Africa Headquarters Tel: +49 898 780 672 80 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. © 2009 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved. LINEAGE POWER 25 Document No: DS08-006 ver. 1.06 PDF name: APXK004A0X.pdf