Data Sheet April 1, 2008 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 10A Output Current Features RoHS Compliant 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) Delivers up to 10A output current High efficiency – 95% at 3.3V full load (VIN = 5.0V) Small size and low profile: 50.8 mm x 12.7 mm x 8.10 mm (2.00 in x 0.5 in x 0.32 in) Low output ripple and noise High Reliability: Applications Calculated MTBF = 15.7 M hours at 25oC Full-load Distributed power architectures Constant switching frequency (300 kHz) Intermediate bus voltage applications Telecommunications equipment Output voltage programmable from 0.75 Vdc to 3.63Vdc via external resistor Servers and storage applications Line Regulation: 0.3% (typical) Networking equipment Load Regulation: 0.4% (typical) Enterprise Networks Temperature Regulation: 0.4 % (typical) Latest generation IC’s (DSP, FPGA, ASIC) and Microprocessor powered applications Remote On/Off Remote Sense Over temperature protection Output overcurrent protection (non-latching) Wide operating temperature range (-40°C to 85°C) UL* 60950-1Recognized, CSA C22.2 No. 60950-103 Certified, and VDE‡ 0805:2001-12 (EN60950-1) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities † Description Austin LynxTM SIP power modules are non-isolated dc-dc converters that can deliver up to 10A of output current with full load efficiency of 95% at 3.3V output. These modules provide a precisely regulated output voltage programmable via an external resistor from 0.75Vdc to 3.63Vdc over a wide range of input voltage (VIN = 3.0 – 5.5Vdc). Their open-frame construction and small footprint enable designers to develop cost- and space-efficient solutions. * 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: DS05-007 ver. 1.41 PDF name: lynx_sip_x3_ds.pdf Data Sheet April 1, 2008 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A 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 5.8 Vdc All TA -40 85 °C All Tstg -55 125 °C Input Voltage Continuous 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 Operating Input Voltage All VIN 3.0 Typ Max Unit 5.5 Vdc Maximum Input Current All IIN,max 10 Adc VO,set = 0.75Vdc IIN,No load 25 mA VO,set = 3.3Vdc IIN,No load 30 mA All IIN,stand-by 1.5 mA Inrush Transient All It Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; VIN, min to VIN, max, IO= IOmax ; See Test configuration section) All 100 Input Ripple Rejection (120Hz) All 30 (VIN= VIN, min to VIN, max, IO=IO, max VO,set = 3.3Vdc) Input No Load Current (VIN = 5.0Vdc, IO = 0, module enabled) Input Stand-by Current (VIN = 5.0Vdc, module disabled) 2 0.1 2 As 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 part of a complex 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 15A, time-delay fuse (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 April 1, 2008 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Electrical Specifications (continued) Parameter Output Voltage Set-point Device Symbol Min Typ Max Unit All VO, set -2.0 VO, set +2.0 % VO, set All VO, set -3.0% ⎯ +3% % VO, set All VO 0.7525 3.63 Vdc (VIN=IN, min, IO=IO, max, TA=25°C) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor Output Regulation Line (VIN=VIN, min to VIN, max) All ⎯ 0.3 ⎯ % VO, set Load (IO=IO, min to IO, max) All ⎯ 0.4 ⎯ % VO, set Temperature (Tref=TA, min to TA, max) All ⎯ 0.4 ⎯ % VO, set RMS (5Hz to 20MHz bandwidth) All ⎯ 8 15 mVrms Peak-to-Peak (5Hz to 20MHz bandwidth) All ⎯ 25 50 mVpk-pk μF Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Cout = 1μF ceramic//10μFtantalum capacitors) External Capacitance ESR ≥ 1 mΩ All CO, max ⎯ ⎯ 1000 ESR ≥ 10 mΩ All CO, max ⎯ ⎯ 5000 μF Output Current All Io 0 10 Adc Output Current Limit Inception (Hiccup Mode ) All IO, lim ⎯ 200 ⎯ % Io All IO, s/c ⎯ 3 ⎯ Adc (VO= 90% of VO, set) Output Short-Circuit Current (VO≤250mV) ( Hiccup Mode ) Efficiency VO,set = 0.75Vdc η 82.5 % VIN= VIN, nom, TA=25°C VO, set = 1.2Vdc η 88.0 % IO=IO, max , VO= VO,set VO,set = 1.5Vdc η 89.5 % VO,set = 1.8Vdc η 91.0 % VO,set = 2.5Vdc η 93.0 % VO,set = 3.3Vdc η 95.0 % All fsw ⎯ 300 ⎯ kHz All Vpk ⎯ 200 ⎯ mV Settling Time (Vo<10% peak deviation) All ts ⎯ 25 ⎯ μs (dIo/dt=2.5A/μs; VIN = VIN, nom; TA=25°C) Load Change from Io= 100% to 50%of Io,max: 1μF ceramic// 10 μF tantalum All Vpk ⎯ 200 ⎯ mV All ts ⎯ 25 ⎯ μs Switching Frequency Dynamic Load Response (dIo/dt=2.5A/μs; VIN = VIN, nom; TA=25°C) Load Change from Io= 50% to 100% of Io,max; 1μF ceramic// 10 μF tantalum Peak Deviation Peak Deviation Settling Time (Vo<10% peak deviation) LINEAGE POWER 3 Data Sheet April 1, 2008 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit All Vpk ⎯ 100 ⎯ mV Dynamic Load Response (dIo/dt=2.5A/μs; V VIN = VIN, nom; TA=25°C) Load Change from Io= 50% to 100% of Io,max; Co = 2x150 μF polymer capacitors Peak Deviation Settling Time (Vo<10% peak deviation) All ts ⎯ 100 ⎯ μs (dIo/dt=2.5A/μs; VIN = VIN, nom; TA=25°C) Load Change from Io= 100% to 50%of Io,max: Co = 2x150 μF polymer capacitors Peak Deviation All Vpk ⎯ 100 ⎯ mV Settling Time (Vo<10% peak deviation) All ts ⎯ 100 ⎯ μs General Specifications Parameter Min Calculated MTBF (IO=IO, max, TA=25°C) Telecordia SR-332 Issue 1: Method 1 Case 3 Weight LINEAGE POWER Typ Max 15,726,000 ⎯ 5.6 (0.2) Unit Hours ⎯ g (oz.) 4 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 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 Input High Voltage (Module OFF) All VIH Input High Current All IIH Input Low Voltage (Module ON) All Input Low Current All Unit 1.5 ― VIN,max V ― 0.2 1 mA VIL -0.2 ― 0.3 V IIL ― ― 10 μA All Tdelay ― 3.9 ― msec All Tdelay ― 3.9 ― msec All Trise ― 4.2 8.5 msec ― 1 % VO, set ― ― 0.5 V ⎯ 125 ⎯ °C Remote On/Off Signal interface (VIN=VIN, min to VIN, max; Open collector pnp or equivalent Compatible, Von/off signal referenced to GND See feature description section) Logic High Logic Low Turn-On Delay and Rise Times o (IO=IO, max , VIN=VIN, nom, TA = 25 C) Case 1: On/Off input is set to Logic Low (Module ON) and then input power is applied (delay from instant at which VIN = VIN, min until Vo=10% of Vo,set) Case 2: Input power is applied for at least one second and then the On/Off input is set to logic Low (delay from instant at which Von/Off=0.3V until Vo=10% of Vo, set) Output voltage Rise time (time for Vo to rise from 10% of Vo,set to 90% of Vo, set) Output voltage overshoot – Startup o IO= IO, max; VIN = 3.0 to 5.5Vdc, TA = 25 C Remote Sense Range Overtemperature Protection All Tref (See Thermal Consideration section) Input Undervoltage Lockout Turn-on Threshold All 2.2 V Turn-off Threshold All 2.0 V LINEAGE POWER 5 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 Characteristic Curves TM The following figures provide typical characteristics for the Austin Lynx 90 SIP modules at 25ºC. 96 VIN = 3.0V 93 87 EFFICIENCY, (η) EFFICIENCY, (η) 90 84 81 78 VIN = 5.0V 75 VIN = 5.5V 72 87 84 81 VIN = 3.0V 78 VIN = 5.0V 75 VIN = 5.5V 72 0 2.5 5 7.5 10 0 OUTPUT CURRENT, IO (A) 2.5 5 7.5 10 OUTPUT CURRENT, IO (A) Figure 1. Converter Efficiency versus Output Current (Vout = 0.75Vdc). Figure 4. Converter Efficiency versus Output Current (Vout = 1.8Vdc). 100 93 97 90 94 EFFICIENCY, (η) EFFICIENCY, (η) 87 84 81 VIN = 3.0V 78 VIN = 5.0V 75 VIN = 5.5V 85 82 VIN = 3.0V 79 VIN = 5.0V 76 VIN = 5.5V 73 72 0 2.5 5 7.5 0 10 OUTPUT CURRENT, IO (A) Figure 2. Converter Efficiency versus Output Current (Vout = 1.2Vdc). 100 91 97 88 94 85 91 79 VIN = 3.0V 76 VIN = 5.0V 73 VIN = 5.5V 5 7.5 10 OUTPUT CURRENT, IO (A) 94 82 2.5 Figure 5. Converter Efficiency versus Output Current (Vout = 2.5Vdc). EFFICIENCY, (η) EFFICIENCY, (η) 91 88 88 85 VIN = 4.5V 82 VIN = 5.0V 79 VIN = 5.5V 76 70 0 2.5 5 7.5 10 OUTPUT CURRENT, IO (A) Figure 3. Converter Efficiency versus Output Current (Vout = 1.5Vdc). LINEAGE POWER 0 2.5 5 7.5 10 OUTPUT CURRENT, IO (A) Figure 6. Converter Efficiency versus Output Current (Vout = 3.3Vdc). 6 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 Characteristic Curves (continued) TM Io=5A INPUT CURRENT, IIN (A) 8 Io=0A 7 6 5 4 3 2 1 0 0.5 1.5 2.5 3.5 4.5 5.5 VO (V) (200mV/div) Io=10A 9 INPUT VOLTAGE, VIN (V) TIME, t (2μs/div) Figure 9. Typical Output Ripple and Noise (Vin = 5.0V dc, Vo = 3.3 Vdc, Io=10A). LINEAGE POWER IO (A) (5A/div) VO (V) (200mV/div) Figure 11. Transient Response to Dynamic Load Change from 100% to 50% of full load (Vo = 3.3 Vdc). VO (V) (20mV/div) Figure 8. Typical Output Ripple and Noise (Vin = 5.0V dc, Vo = 0.75Vdc, Io=10A). OUTPUT CURRENT, OUTPUT VOLTAGE TIME, t (10μs/div) OUTPUT VOLTAGE TIME, t (2μs/div) TIME, t (10μs/div) Figure 10. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3Vdc). OUTPUT CURRENT, OUTPUT VOLTAG IO (A) (5A/div) VO (V) (200mV/div) VO (V) (20mV/div) OUTPUT VOLTAGE Figure 7. Input voltage vs. Input Current (Vo = 2.5Vdc). SIP modules at 25ºC. IO (A) (5A/div) 10 OUTPUT CURRENT, OUTPUT VOLTAGE The following figures provide typical characteristics for the Austin Lynx TIME, t (20μs/div) Figure 12. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3 Vdc, Cext = 2x150 μF Polymer Capacitors). 7 Data Sheet April 1, 2008 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Characteristic Curves (continued) VOV) (1V/div) Low-ESR external capacitors (Vin = 5.5Vdc, Vo = 3.3Vdc, Io = 10.0A, Co = 1050μF). LINEAGE POWER VNN (V) (2V/div) VOV) (1V/div) OUTPUT VOLTAGE INPUT VOLTAGE TIME, t (2 ms/div) Figure 15. Typical Start-Up Using Remote On/Off with VOn/off (V) (2V/div) TIME, t (2 ms/div) Figure 17 Typical Start-Up Using Remote On/Off with Prebias (Vin = 3.3Vdc, Vo = 1.8Vdc, Io = 1.0A, Vbias =1.0Vdc). OUTPUT CURRENT, On/Off VOLTAGE VOn/off (V) (2V/div) OUTPUT VOLTAGE Figure 14. Typical Start-Up Using Remote On/Off (Vin = 5.0Vdc, Vo = 3.3Vdc, Io = 10.0A). On/Off VOLTAGE VOn/off (V) (2V/div) VOV) (1V/div) TIME, t (2 ms/div) Figure 16. Typical Start-Up with application of Vin (Vin = 5.5Vdc, Vo = 3.3Vdc, Io = 10A). VOV) (1V/div) On/Off VOLTAGE OUTPUT VOLTAGE Figure 13. Transient Response to Dynamic Load Change from 100% of 50% full load (Vo = 3.3 Vdc, Cext = 2x150 μF Polymer Capacitors). TIME, t (2 ms/div) OUTPUT VOLTAGE TIME, t (20μs/div) IO (A) (10A/div) VO (V) (200mV/div) IO (A) (5A/div) OUTPUT CURRENT, OUTPUT VOLTAGE The following figures provide typical characteristics for the Austin LynxTM SMT modules at 25ºC. TIME, t (10ms/div) Figure 18. Output short circuit Current (Vin = 5.0Vdc, Vo = 0.75Vdc). 8 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 Characteristic Curves (continued) 12 12 10 10 OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) The following figures provide thermal derating curves for the Austin Lynx 8 6 4 NC 2 100 LFM 0 20 30 40 50 60 70 80 TM SIP modules. 8 6 4 NC 2 100 LFM 0 90 20 O AMBIENT TEMPERATURE, TA C 10 OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) 10 8 6 4 NC 2 100 LFM 0 50 60 70 80 60 70 80 90 AMBIENT TEMPERATURE, TA C 12 40 50 Figure 22. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=3.3 Vdc). 12 30 40 O Figure 19. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=0.75Vdc). 20 30 90 O 8 6 4 NC 2 0 20 30 40 50 60 70 80 90 O AMBIENT TEMPERATURE, TA C AMBIENT TEMPERATURE, TA C Figure 20. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=1.8 Vdc). Figure 23. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 3.3Vdc, Vo=2.5 Vdc). OUTPUT CURRENT, Io (A) 12 10 8 6 4 NC 2 100 LFM 0 20 30 40 50 60 70 80 90 O AMBIENT TEMPERATURE, TA C Figure 21. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=2.5 Vdc). LINEAGE POWER 9 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 Test Configurations 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 24. Input Reflected Ripple Current Test Setup. VO (+) RESISTIVE LOAD 1uF . 10uF Austin LynxTM SIP module should be connected to a low-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, low-ESR polymer and ceramic capacitors are recommended at the input of the module. Figure 27 shows input ripple voltage (mVp-p) for various outputs with 1x150 µF polymer capacitors (Panasonic p/n: EEFUE0J151R, Sanyo p/n: 6TPE150M) in parallel with 1 x 47 µF ceramic capacitor (Panasonic p/n: ECJ-5YB0J476M, Taiyo- Yuden p/n: CEJMK432BJ476MMT) at full load. Figure 28 shows the input ripple with 3x150 µF polymer capacitors in parallel with 2 x 47 µF ceramic capacitor at full load. Input Ripple Voltage (mVp-p) COPPER STRIP Input Filtering SCOPE COM 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. 180 160 140 120 100 80 60 0 0.5 Rcontact VIN(+) RLOAD VO VIN Rdistribution Rcontact Rcontact COM Rdistribution VO 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 26. Output Voltage and Efficiency Test Setup. VO. IO Efficiency η = LINEAGE POWER VIN. IIN x 100 % 1 1.5 2 2.5 3 3.5 Output Voltage (Vdc) Figure 27. Input ripple voltage for various output with 1x150 µF polymer and 1x47 µF ceramic capacitors at the input (full load). 120 Input Ripple Voltage (mVp-p) Rcontact 5Vin 20 Figure 25. Output Ripple and Noise Test Setup. Rdistribution 3.3Vin 40 100 80 60 40 3.3Vin 20 5Vin 0 0.5 1 1.5 2 2.5 3 3.5 Output Voltage (Vdc) Figure 28. Input ripple voltage for various output with 3x150 µF polymer and 2x47 µF ceramic capacitors at the input (full load) 10 Data Sheet April 1, 2008 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Design Considerations (continued) Safety Considerations Output Filtering 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. 60950-1-03, and VDE 0850:2001-12 (EN60950-1) Licensed. The Austin LynxTM SIP module is designed for low output ripple voltage and will meet the maximum output ripple specification with 1 µF ceramic and 10 µF tantalum 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. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. LINEAGE POWER 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 15A in the positive input lead. 11 Data Sheet April 1, 2008 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Feature Description Remote On/Off The Austin LynxTM power modules feature an an On/Off pin for remote On/Off operation. The On/Off pin is pulled high with an external pull-up resistor (typical Rpull-up = 68k, ± 5%) as shown in Fig. 28. When transistor Q1 is in the Off state, logic High is applied to the On/Off pin and the power module is Off. The minimum On/off voltage for logic High on the On/Off pin is 1.5Vdc. To turn the module ON, logic Low is applied to the On/Off pin by turning ON Q1. When not using the negative logic On/Off, leave the pin unconnected or tie to GND. VIN+ The output voltage of the Austin LynxTM SIP can be programmed to any voltage from 0.75 Vdc to 3.3 Vdc by connecting a single resistor (shown as Rtrim in Figure 31) between the TRIM and GND pins of the module. Without an external resistor between the TRIM pin and the ground, the output voltage of the module is 0.7525 Vdc. To calculate the value of the resistor Rtrim for a particular output voltage Vo, use the following equation: ⎡ 21070 ⎤ Rtrim = ⎢ − 5110⎥ Ω Vo − 0 . 7525 ⎣ ⎦ For example, to program the output voltage of the TM Austin Lynx module to 1.8 Vdc, Rtrim is calculated is follows: ⎤ ⎡ 21070 Rtrim = ⎢ − 5110⎥ Ω ⎦ ⎣1.8 − 0.7525 MODULE Rpull-up I ON/OFF Rtrim = 15.004 kΩ ON/OFF + VON/OFF PWM Enable R1 Q2 Q1 CSS V IN(+) V O(+) ON/OFF TRIM R2 GND _ LOAD R trim Figure 29. Circuit configuration for using positive logic On/OFF. 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. The typical average output current during hiccup is 3A. Input Undervoltage Lockout At input voltages below the input undervoltage lockout limit, module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold. GND Figure 31. Circuit configuration for programming output voltage using an external resistor. Table 1 provides Rtrim values for some common output voltages Table 1 VO, set (V) Rtrim (KΩ) 0.7525 Open 1.2 41.973 1.5 23.077 1.8 15.004 2.5 6.947 3.3 3.160 Overtemperature Protection To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the thermal reference point Tref, exceeds 125oC (typical), but the thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. The module will automatically restarts after it cools down. By using a 1% tolerance trim resistor, set point tolerance of ±2% is achieved as specified in the electrical specifications. The POL Programming Tool, available at www.lineagepower.com under the Design Tools section, helps determine the required external trim resistor needed for a specific output voltage Output Voltage Programming LINEAGE POWER 12 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 Feature Descriptions (continued) The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using the trim feature, 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 (Pmax = Vo,set x Io,max). (Vo x Io). When using Remote Sense, the output voltage of the module can increase, which if the same output is maintained, increases the power output by the module. Make sure that the maximum output power of the module remains at or below the maximum rated power. When the Remote Sense feature is not being used, leave the Remote Sense pin unconnected. Rdistribution Rcontact Rcontact Rdistribution VIN(+) VO Sense Voltage Margining RLOAD Output voltage margining can be implemented in the TM Austin Lynx modules by connecting a resistor, Rmarginup, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargindown, from the Trim pin to the Output pin for marginingdown. Figure 32 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. Rdistribution Rcontact Rcontact Rdistribution COM COM Figure 33. Remote sense circuit configuration Vo Rmargin-down Austin Lynx or Lynx II Series Q2 Trim Rmargin-up Rtrim Q1 GND Figure 32. Circuit Configuration for margining Output voltage. Remote Sense The Austin LynxTM SIP power modules have a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the Remote Sense pin (See Figure 33). The voltage between the Sense pin and Vo pin must not exceed 0.5V. The amount of power delivered by the module is defined as the output voltage multiplied by the output current LINEAGE POWER 13 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 Thermal Considerations Heat Transfer via Convection The power modules operate in a variety of thermal environments; however, sufficient cooling should always be provided to help ensure reliable operation. Increased airflow over the module enhances the heat transfer via convection. Thermal derating curves showing the maximum output current that can be delivered at different local ambient temperature (TA) for airflow conditions ranging from natural convection and up to 2m/s (400 ft./min) are shown in the Characteristics Curves section. 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 set-up is shown in Figure 34. Note that the airflow is parallel to the long axis of the module as shown in Figure 35. The derating data applies to airflow in either direction of the module’s long axis. Air Flow Tref 25.4_ (1.0) Wind Tunnel PWBs Power Module Top View Figure 35. Tref Temperature measurement location Post solder Cleaning and Drying Considerations 76.2_ (3.0) x 8.3_ (0.325) Probe Location for measuring airflow and ambient temperature Air flow Figure 35. Thermal Test Set-up. The thermal reference point, Tref used in the specifications is shown in Figure 34. For reliable o operation this temperature should not exceed 125 C. 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 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 Through-Hole Lead-Free Soldering Information 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 3°C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210°C. For Pb solder, the recommended pot temperature is 260°C, while the Pb-free solder pot is 270°C max. Not all RoHS-compliant through-hole products can be processed with paste-through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your Lineage Power technical representative for more details. 14 Data Sheet April 1, 2008 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A 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.) Side View Side View Back View PIN 1 Back View FUNCTION Vo 2 Vo 3 Vo,sense 4 Vo 5 GND 6 GND 7 VIN 8 VIN 9 TRIM 10 ON/OFF LINEAGE POWER 15 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 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.) Pin Function 1 Vo 2 Vo 3 Vo,sense 4 Vo 5 GND 6 GND 7 VIN 8 VIN 9 TRIM 10 ON/OFF LINEAGE POWER 16 Austin LynxTM SIP Non-isolated Power Modules, Programmable: 3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current Data Sheet April 1, 2008 Ordering Information Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table 2. Device Codes Input Voltage Range Output Voltage Output Current Efficiency 3.3V @full load Connector Type AXH010A0X3 3.0 – 5.5Vdc 0.75 – 3.63Vdc 10 A 95.0% TH 108992046 AXH010A0X3Z 3.0 – 5.5Vdc 0.75 – 3.63Vdc 10 A 95.0% TH CC109101318 Device Code Comcodes * Remote sense feature is active and pin 6 is added with code suffix “3” -Z refers to RoHS compliant Versions Asia-Pacific Headquarters Tel: +65 6416 4283 World Wide Headquarters Lineage Power Corporation 3000 Skyline Drive, Mesquite, TX 75149, USA +1-800-526-7819 (Outside U.S.A.: +1-972-284-2626) www.lineagepower.com e-mail: [email protected] Europe, Middle-East and Africa Headquarters Tel: +49 89 6089 286 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. © 2008 Lineage Power Corporation, (Mesquite, Texas) All International Rights Reserved. LINEAGE POWER 17 Document No: DS05-007 ver. 1.41 PDF name: lynx_sip_x3_ds.pdf