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Lot of 41 AXH005A0X IC Module DC-DC Convert Chip Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0Vdc – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A Output Current * 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: DS03-082 ver. 1.3 PDF name: microlynx_smt_3.3v-5v.pdf _ Distributed power architectures _ Intermediate bus voltage applications _ Telecommunications equipment _ Servers and storage applications _ Compliant to RoHS EU Directive 2002/95/EC (-Z _ Compliant to ROHS EU Directive 2002/95/EC with lead solder exemption (non-Z versions) _ Delivers up to 5A output current _ High efficiency – 94% at 3.3V full load (VIN = 5.0V) _ (0.80 in x 0.45 in x 0.235 in) _ Calculated MTBF = 19M hours at 25oC Full-load _ Constant switching frequency (300 kHz) _ Output voltage programmable from 0.75 Vdc to _ Line Regulation: 0.3% (typical) _ Load Regulation: 0.4% (typical) _ Temperature Regulation: 0.4 % (typical) _ Output overcurrent protection (non-latching) _ Wide operating temperature range (-40°C to 85°C) _ UL* 60950-1Recognized, CSA†C22.2 No. 60950-1- 03 Certified, and VDE‡ 0805:2001-12 (EN60950-1) _ ISO** 9001 and ISO 14001 certified manufacturing The Austin MicroLynxTM SMT (surface mount technology) power modules are non-isolated dc-dc converters that can deliver up to 5A of output current with full load efficiency of 94.0% at 3.3V output. These modules provide a precisely regulated output voltage programmable via an external resistor from 0.75Vdc to 4.0Vdc over a wide range of input voltage (VIN = 3.0 – 5.8Vdc). Their open-frame construction and small footprint enable designers to develop cost- and space-efficient solutions. Standard features include remote On/Off, programmable output voltage, overcurrent and overtemperature protection. Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current 2 Tyco Electronics Power Systems Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. Parameter Device Symbol Min Max Unit Input Voltage All VIN -0.3 5.8 Vdc Operating Ambient Temperature All TA -40 85 °C (see Thermal Considerations section) Storage Temperature All Tstg -55 125 °C Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature Parameter Device Symbol Min Typ Max Unit Operating Input Voltage VO,set ≤ VIN – 0.5V VIN 3.0  5.8 Vdc Maximum Input Current All IIN,max 5.0 Adc (VIN= VIN, min to VIN, max, IO=IO, max VO,set = 3.3Vdc) Input No Load Current VO,set = 0.75 Vdc IIN,No load 20 mA (VIN = 5.0Vdc, IO = 0, module enabled) VO,set = 3.3Vdc IIN,No load 45 mA Input Stand-by Current All IIN,stand-by 0.6 mA (VIN = 5.0Vdc, module disabled) Inrush Transient All I2t 0.04 A2s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; VIN, min to VIN, max, IO= IOmax ; See Test configuration section) Input Ripple Rejection (120Hz) All 30 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 fastacting 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. Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 3 Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point All VO, set –2.0  +2.0 % VO, set (VIN=IN, min, IO=IO, max, TA=25°C) Output Voltage All VO, set –3%  +3% % VO, set (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range All VO 0.7525 4.0 Vdc Selected by an external resistor 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 Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Cout = 1μF ceramic//10μFtantalum capacitors) RMS (5Hz to 20MHz bandwidth) All  10 15 mVrms Peak-to-Peak (5Hz to 20MHz bandwidth) All  40 50 mVpk-pk ESR ≥ 1 mΩ All CO, max   1000 μF ESR ≥ 10 mΩ All CO, max   3000 μF Output Current All Io 0  5 Adc Output Current Limit Inception (Hiccup Mode ) All IO, lim  220  % Io Output Short-Circuit Current All IO, s/c  2  Adc Efficiency VO,set = 0.75Vdc η 79.0 % VIN= VIN, nom, TA=25°C VO, set = 1.2Vdc η 85.0 % IO=IO, max , VO= VO,set VO,set = 1.5Vdc η 87.0 % Switching Frequency All fsw  300  kHz (dIo/dt=2.5A/ìs; VIN = VIN, nom; TA=25°C) All Vpk  130  mV Load Change from Io= 50% to 100% of Io,max; 1μF ceramic// 10 μF tantalum Settling Time (Vo<10% peak deviation) All ts  25  ìs (dIo/dt=2.5A/ìs; VIN = VIN, nom; TA=25°C) All Vpk  130  mV Load Change from Io= 100% to 50%of Io,max: Settling Time (Vo<10% peak deviation) All ts  25  ìs Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current 4 Tyco Electronics Power Systems Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit (dIo/dt=2.5A/ìs; V VIN = VIN, nom; TA=25°C) All Vpk  50  mV Load Change from Io= 50% to 100% of Io,max; Co = 2x150 μF polymer capacitors Settling Time (Vo<10% peak deviation) All ts  50  ìs (dIo/dt=2.5A/ìs; VIN = VIN, nom; TA=25°C) All Vpk  50  mV Load Change from Io= 100% to 50%of Io,max: Co = 2x150 μF polymer capacitors Settling Time (Vo<10% peak deviation) All ts  50  ìs Calculated MTBF (IO=IO, max, TA=25°C) 19, 000,000 Hours Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 5 Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit 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 Low (On/Off Voltage pin open - Module ON) Logic High (Von/Off > 2.5V – Module Off) (IO=IO, max , VIN = VIN, nom, TA = 25 oC, ) 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% Output voltage overshoot – Startup ― 1 % VO, set IO= IO, max; VIN = 3.0 to 5.8Vdc, TA = 25 oC Overtemperature Protection All Tref  150  °C (See Thermal Consideration section) Turn-on Threshold All  2.2  V Turn-off Threshold All  2.0  V Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current The following figures provide typical characteristics for the Austin MicroLynxTM SMT modules at 25ºC. Figure 1. Converter Efficiency versus Output Current Figure 4. Converter Efficiency versus Output Current OUTPUT CURRENT, IO (A) EFFICIENCY, ç Figure 2. Converter Efficiency versus Output Current Figure 5. Converter Efficiency versus Output Current Figure3. Converter Efficiency versus Output Current Figure 6. Converter Efficiency versus Output Current Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 7 The following figures provide typical characteristics for the Austin MicroLynxTM SMT modules at 25ºC. Figure 7. Converter Efficiency versus Output Current Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current 8 Tyco Electronics Power Systems Characteristic Curves (continued) The following figures provide typical characteristics for the Austin MicroLynxTM SMT modules at 25ºC. OUTPUT CURRENT, OUTPUT VOLTAGE IO (A) (2A/div) VO (V) (100mV/div) Figure 8. Input voltage vs. Input Current Figure 11. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3Vdc). TIME, t (2ìs/div) OUTPUT CURRENT, OUTPUT VOLTAGE IO (A) (2A/div) VO (V) (100mV/div) Figure 9. Typical Output Ripple and Noise (Vin = 5.0V dc, Vo = 0.75 Vdc, Io=5A). Figure 12. Transient Response to Dynamic Load Change from 100% to 50% of full load (Vo = 3.3 Vdc). OUTPUT CURRENT, OUTPUT VOLTAGE IO (A) (2A/div) VO (V) (50mV/div) Figure 10. Typical Output Ripple and Noise (Vin = 5.0V dc, Vo = 3.3 Vdc, Io=5A). Figure 13. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 5.0 Vdc, Cext = 2x150 μF Polymer Capacitors). Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 9 Characteristic Curves (continued) The following figures provide typical characteristics for the Austin MicroLynxTM SMT modules at 25ºC. IO (A) (2A/div) VO (V) (50mV/div) Vo (V) (1V/div) VIN (V) (2V/div) Figure 14. Transient Response to Dynamic Load Change from 100% of 50% full load (Vo = 5.0 Vdc, Cext = 2x150 μF Polymer Capacitors). Figure 17. Typical Start-Up with application of Vin (Vin = 5.0Vdc, Vo = 3.3Vdc, Io = 5A). VOV) (1V/div) VOn/off (V) (2V/div) TIME, t (2 ms/div) OUTPUT VOLTAGE On/Off VOLTAGE VOV) (1V/div) VOn/off (V) (2V/div) TIME, t Figure 15. Typical Start-Up Using Remote On/Off (Vin = 5.0Vdc, Vo = 3.3Vdc, Io = 5.0A). Figure 18. Typical Start-Up Using Remote On/Off with Prebias (Vin = 3.3Vdc, Vo = 1.8Vdc, Io = 1.0A, Vbias VOV) (1V/div) VOn/off (V) (2V/div) Figure 16. Typical Start-Up Using Remote On/Off with Low-ESR external capacitors (7x150uF Polymer) (Vin = 5.0Vdc, Vo = 3.3Vdc, Io = 5.0A, Co = 1050ìF). Figure 19. Output short circuit Current (Vin = 5.0Vdc, Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current 10 Tyco Electronics Power Systems Characteristic Curves (continued) The following figures provide thermal derating curves for the Austin MicroLynxTM SMT modules. Figure 20. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0, Figure 23. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 3.3dc, Figure 21. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0Vdc, Figure 22. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 3.3Vdc, Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 11 NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1μH. Capacitor CS offsets possible battery impedance. Measure current as shown Figure 24. Input Reflected Ripple Current Test Setup. 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 Figure 25. Output Ripple and Noise Test Setup. Rcontact Rcontact Rdistribution 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 Figure 26. Output Voltage and Efficiency Test Setup. The Austin MicroLynxTM SMT 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 To minimize input voltage ripple, low-ESR polymer and ceramic capacitors are recommended at the input of the module. Figure 27 shows the input ripple voltage (mVpp) 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 2x150 μF polymer capacitors in parallel with 2 x 47 μF ceramic capacitor at full load. Figure 27. Input ripple voltage for various output with 1x150 μF polymer and 1x47 μF ceramic capacitors at the input (full load). Figure 28. Input ripple voltage for various output with 2x150 μF polymer and 2x47 μF ceramic capacitors at the input (full load). Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Design Considerations (continued) The Austin MicroLynxTM SMT 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 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. To perform specific stability and transient response analysis, use Tyco Power’s Stability Analysis Tool (SAT) available on Tyco Power website at power.tycoelectronics.com. Please contact your local Tyco Power application engineer for availability of characteristic model of these Austin Lynx modules. 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. 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 The input to these units is to be provided with a fastacting fuse with a maximum rating of 6A in the positive Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 13 The Austin MicroLynxTM SMT power modules feature an On/Off pin for remote On/Off operation of the module. If not using the remote On/Off pin, leave the pin open (module will be On). The On/Off pin signal (Von/Off) is referenced to ground. To switch the module on and off using remote On/Off, connect an open collector pnp transistor between the On/Off pin and the VIN pin (See When the transistor Q1 is in the OFF state, the power module is ON (Logic Low on the On/Off of the module) and the maximum Von/off of the module is 0.4 V. The maximum allowable leakage current of the transistor when Von/off = 0.4V and VIN = VIN,max is 10μA. During a logic-high when the transistor is in the active state, the power module is OFF. During this state VOn/Off = 2.5V to 5.8V and the maximum IOn/Off = 1mA. Figure 29. Remote On/Off Implementation. Remote On/Off can also be implemented using opencollector logic devices with an external pull-up resistor. Figure 30 shows the circuit configuration using this approach. Pull-up resistor Rpull-up, for the configuration should be 5k (+/- 5%) for proper operation of module over Figure 30. Remote On/Off Implementation using logic-level devices and an external pull-up resistor. 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 2A. 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 To provide over temperature protection in a fault condition, the unit relies upon the thermal protection feature of the controller IC. The unit will shutdown if the thermal reference point Tref, exceeds 150oC (typical), but the thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. The module will automatically restart after it cools down. Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Feature Descriptions (continued) The output voltage of the Austin MicroLynxTM SMT can be programmed to any voltage from 0.75 Vdc to 4.0 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 TRIM pin and the ground, the output voltage of the module is 0.75 Vdc. To calculate the value of the resistor Rtrim for a particular output voltage Vo, use the following equation: For example, to program the output voltage of the Austin MicroLynxTM module to 1.8 Vdc, Rtrim is calculated is Figure 31. Circuit configuration for programming output voltage using an external resistor. The Austin MicroLynxTM can also be programmed by applying a voltage between the TRIM and the GND pins (Figure 32). The following equation can be used to determine the value of Vtrim needed to obtain a desired Vtrim =(0.7 − 0.1698×{Vo − 0.7525}) For example, to program the output voltage of a MicroLynxTM module to 3.3 Vdc, Vtrim is calculated as Vtrim = (0.7 − 0.1698×{3.3 − 0.7525}) Figure 32. Circuit Configuration for programming Output voltage using external voltage source. Table 1 provides Rtrim values required for some common output voltages, while Table 2 provides values of the external voltage source, Vtrim for the same common By using a 1% tolerance trim resistor, set point tolerance of ±2% is achieved as specified in the electrical specification. The Lynx Programming Tool, available at power.tycoelectronics.com under the Design Tools section, helps determine the required external trim resistor needed for a specific output voltage. Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 15 Feature Description (continued) Output voltage margining can be implemented in the Austin MicroLynxTM 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 the Output pin for margining-down. Figure 31 shows the circuit configuration for output voltage margining. The Lynx Programming Tool, available at power.tycoelectronics.com under the Design Tools section, also calculates the values of Rmargin-up and Rmargindown for a specific output voltage and % margin. Please consult your local Tyco Field Application Engineer or Account Manager for additional details. Figure 33. Circuit Configuration for margining Output 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. Note that the airflow is parallel to the long axis of the module as shown in figure 34. The test set-up is shown in figure 35. The derating data applies to airflow in either direction of the module’s long Figure 34. Tref Temperature measurement location. The thermal reference point, Tref used in the specifications is shown in Figure 34. For reliable operation this temperature should not exceed 115oC. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Thermal Considerations (continued) Figure 35. Thermal Test Set-up. 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 temperatures (TA) for airflow conditions ranging from natural convection and up to 1m/s (200 ft./min) are shown in the Characteristics Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 17 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.) Co-planarity (max): 0.004 (0.102) Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current 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.) Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 19 All Dimensions are in millimeters and (in inches). Outside Dimensions: 330.2 mm (13.00) Inside Dimensions: 177.8 mm (7.00â€) Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current The Austin MicroLynxTM SMT 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. All dimensions are in millimeters and (inches). Figure 36. Pick and Place Location. The module weight has been kept to a minimum by using open frame construction. Even so, these modules have a relatively large mass when compared to conventional SMT components. Variables such as nozzle size, tip style, vacuum pressure and placement speed should be considered to optimize this process. The minimum recommended nozzle diameter for reliable operation is 6mm. The maximum nozzle outer diameter, which will safely fit within the allowable Oblong or oval nozzles up to 11 x 9 mm may also be used within the space available. The Austin MicroLynxTM SMT power modules are large mass, low thermal resistance devices and typically heat up slower than other SMT components. sheets in order to customize the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability. Typically, the eutectic solder melts at 183oC, wets the land, and subsequently wicks the device connection. Sufficient time must be allowed to fuse the plating on the connection to ensure a reliable solder joint. There are several types of SMT reflow technologies currently used in the industry. These surface mount power modules can be reliably soldered using natural forced convection, IR (radiant infrared), or a combination of convection/IR. For reliable soldering the solder reflow profile should be established by accurately measuring the modules pin temperatures. An example of a reflow profile (using 63/37 solder) for the Austin MicroLynxTM SMT power module is : • Pre-heating zone: room temperature to 183oC • Initial ramp rate < 2.5oC per second • Soaking Zone: 155 oC to 183 oC – 60 to 90 seconds typical (2.0 minutes maximum) • Reflow zone ramp rate:1.3oC to 1.6oC per second • Reflow zone: 210oC to 235oC peak temperature – 30 to 60 seconds (90 seconds maximum Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems 21 Surface Mount Information (continued) The –Z version Austin MicroLynx SMT modules are lead-free (Pb-free) and RoHS compliant and are both forward and backward compatible in a Pb-free and a SnPb soldering process. Failure to observe the instructions below may result in the failure of or cause damage to the modules and can adversely affect 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. 38. The Austin MicroLynx SMT modules have a MSL The recommended storage environment and mount packages is detailed in J-STD-033 Rev. A 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-STD-033A). 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 Post Solder Cleaning and Drying 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 Tyco Electronics Board Mounted Power Modules: Soldering and Cleaning Figure 38. Recommended linear reflow profile Austin MicroLynxTM SMT Non-isolated Power Modules: 3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current Tyco Electronics Power Systems, Inc. 3000 Skyline Drive, Mesquite, TX 75149, USA (Outside U.S.A.: +1-(***)-284-2626) e-mail: bbowers@dfwind.com Europe, Middle-East and Africa Headquarters Tyco Electronics Power Systems Latin America, Brazil, Caribbean Headquarters Tyco Electronics Power Systems Tyco Electronics Systems India Pte. Ltd. Tyco Electronics Singapore Pte. Ltd. Tyco Electronics Corporation 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 © 2003 Tyco Electronics Power Systems, Inc., (Mesquite, Texas) All International Rights Reserved. Document No: DS03-082 ver. 1.3 PDF name: microlynx_smt_3.3v-5v.pdf Please contact your Tyco Electronics’ Sales Representative for pricing, availability and optional features. Product codes Input Voltage Output Voltage Output AXH005A0X-SR 3.0 – 5.8 Vdc 0.75 – 4.0 Vdc 5A 94.0% SMT 108979667 AXH005A0X-SRZ 3.0 – 5.8 Vdc 0.75 – 4.0 Vdc 5A 94.0% SMT 109100518 -Z refers to RoHS-compliant parts If you require more detailed specifications, please contact the manufacturer for technical support. (Worldwide including Hawaii, Alaska, Canada) All California residents will be charged CA sales tax during the Checkout process. Please click on the links below for answers frequently asked questions about that category. Questions? Check out our Frequently Asked Questions page for detailed answers. Request for return merchandise authorization (RMA) Call us. (Monday-Friday 10AM-6PM PST) Mailing address for money orders and checks Tel: (***) 757-3863 (Toll Free) (this posting is the responsibility of the poster) |
bbowers@dfwind.com (Beatriz Bowers) for more information. All emails will be forwarded to the poster's actual email address.
