Data Sheet May 21, 2001 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Features Dual outputs with tight regulation Low profile The HW050 Dual-Output Power Modules use advanced surface-mount technology and deliver high-quality, efficient, and compact dc-dc conversion. Small size: 99.1 mm x 60.0 mm x 8.5 mm (3.90 in. x 2.36 in. x 0.33 in.) High efficiency: 85.5% typical Flexible loading between outputs Fixed frequency Open frame design; no case or potting Overcurrent protection Output overvoltage protection Remote on/off Wide output voltage adjustment Overtemperature protection Applications Distributed power architectures Wide operating temperature range Communications equipment ISO* 9001 Certified manufacturing facilities Computer equipment Options Remote on/off logic choice (positive or negative) Short Pins Complies with ETSI ETI-300-321-2 voltage and current requirements . UL 60950 Recognized, CSA 22.2 No. 60950-00 Certified, and VDE 0805 (IEC60950) Licensed CE mark meets 73/23/EEC and 93/68/EEC directives** Description The HW050 Dual-Output Power Modules are open frame (no case, no potting) dc-dc converters that operate over an input voltage range of 36 Vdc to 75 Vdc and provide two precisely regulated dc outputs. The module has a maximum power rating of 50 W, and uses synchronous rectification on both outputs to achieve a typical full-load efficiency of 85.5%. * ISO is a registered trademark of the International Organization for Standardization. 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. ** This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should be followed. (The CE mark is placed on selected products.) HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 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 device reliability. Parameter Symbol Min Max Unit VI VI, trans -- -- 80 100 Vdc V Operating Ambient Temperature (See Thermal Considerations section.) TA -40 85* C Storage Temperature Tstg -55 125 C I/O Isolation Voltage (for 1 minute) -- -- 1500 Vdc Input Voltage: Continuous Transient (2 ms) * With derated output power, see Thermal Considerations section. Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Table 1. Input Specifications Parameter Symbol Min Typ Max Unit Operating Input Voltage VI 36 48 75 Vdc Maximum Input Current II, max -- -- 2.6 A Inrush Transient -- -- -- 1.0 A2s Input Reflected-ripple Current, Peak-to-peak (5 Hz to 20 MHz, 12 H source impedance) -- -- 10 -- mAp-p Input Ripple Rejection (100 Hz--120 Hz) -- -- 60 -- dB EMC, EN55022 (VI, nom, full load) See EMC Consideration section. Fusing Considerations 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 stand-alone operation to an integrated part of a 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 normal-blow, 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 for further information. 2 Tyco Electronics Corp. HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Electrical Specifications (continued) Table 2. Output Specifications Parameter Output Voltage Set Point (VI = 48 V; IO = IO, max; TA = 25 C) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life. See Figure 21.) Output Regulation: Line (VI = 36 V to 75 V) Load (IO = IO, min to IO, max) Temperature (TA = -40 C to +70 C) Output Ripple and Noise Voltage (see Figure 20): RMS (5 Hz to 20 MHz bandwidth) (VI = 48 V) Peak-to-peak (5 Hz to 20 MHz bandwidth) Temperature (TA = -25 C to +70 C) External Load Capacitance Output Current (At IO < IO, min, the modules may exceed output ripple specifications.) Note: The maximum combined output current must not exceed 12 A for HW050AF, 16 A for HW050FG. Output Current-limit Inception (VO = 90% of VO, nom; 4 A load on other output for HW050AF, and 4 A load on other output for HW050FG) Output Short-circuit Current (VO = 250 mV) Efficiency (for VI = 48 V, TA = 25 C, for HW050AF IO1 = 6 A, IO2 = 6 A; for HW050FG IO1 = 8 A, IO2 = 8 A) When Trimmed to Lowest Voltages: HW050FG Trimmed to VO1 = 2.5 V, VO2 = 1.5 V, IO1 = IO2 = 8 A Switching Frequency Device Symbol Min Typ Max Unit HW050AF VO1, set VO2, set 4.92 3.25 5.00 3.30 5.08 3.35 Vdc Vdc HW050FG VO1, set VO2, set 3.25 2.46 3.30 2.50 3.35 2.54 Vdc Vdc HW050AF VO1 VO2 4.78 3.16 -- -- 5.21 3.44 Vdc Vdc HW050FG VO1 VO2 3.16 2.42 -- -- 3.44 2.58 Vdc Vdc All All All -- -- -- -- -- -- 0.05 0.03 0.3 0.2 0.2 1.0 %VO %VO %VO HW050AF HW050FG HW050AF HW050FG -- -- -- -- -- -- -- -- -- -- -- -- 45 45 150 150 mVrms mVrms mVp-p mVp-p All -- 0 -- 10,000 F HW050AF IO1 IO2 0.5 0.5 -- -- 8.0 8.0 Adc Adc HW050FG IO1 IO2 0.5 0.5 -- -- 12.0 12.0 Adc Adc HW050AF IO, cli -- 11.0 13.0* A HW050FG IO, cli -- 15.0 18.0* A All -- -- 30 -- %IO, max HW050AF HW050FG -- -- 85.5 84.0 -- -- % % HW050FG (trimmed down) -- 81.5 -- % All -- -- 200 -- kHz * These are manufacturing test limits. In some situations, results may differ. Tyco Electronics Corp. 3 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Electrical Specifications (continued) Table 2. Output Specifications (continued) Parameter Dynamic Response (IO/t = 1 A/10 s, VI = 48 V, TA = 25 C; tested without any load capacitance. Adding load capacitance will improve performance.): Load Change from IO1 = 50% to 75% of IO1, max, lO2 = 30% of lO2, max: Peak Deviation Settling Time (VO < 10% of peak deviation) Load Change from IO = 50% to 25% of IO1, max, lO2 = 30% of lO2, max: Peak Deviation Settling Time (VO < 10% of peak deviation) Device Symbol Min Typ Max Unit All All -- -- -- -- 200 200 -- -- mV s All All -- -- -- -- 200 200 -- -- mV s Isolation Specifications Parameter Min Typ Max Unit Isolation Capacitance -- 40 -- nF Isolation Resistance 10 -- -- M Typ Max General Specifications Parameter Calculated MTBF Weight 4 (IO Min = 80% of IO, max; TA = 20 C) 2,000,000 -- -- Unit hours 60 (2.1) g (oz.) Tyco Electronics Corp. HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit -- -- Von/off Ion/off 0 -- -- -- 1.2 1.0 V mA -- -- All Von/off Ion/off -- -- -- -- -- -- 30 15 50 45 V A ms HW050AF for VO1 for VO2 4.75 1.50 -- -- 5.25 3.46 V V HW050FG for VO1 for VO2 2.50 1.50 -- -- 3.46 2.50 V V HW050AF VO1 & VO2 -- -- 7.0* V HW050FG VO1 & VO2 -- -- 4.6* V Remote On/Off Signal Interface (VI = 0 V to 75 V; open collector or equivalent compatible; signal referenced to VI(-) terminal; see Figure 22 and Feature Descriptions.): HW050AF1 Preferred Logic: Logic Low--Module On Logic High--Module Off HW050FG Optional Logic: Logic Low--Module Off Logic High--Module On Logic Low: At Ion/off = 1.0 mA At Von/off = 0.0 V Logic High: At Ion/off = 0.0 A Leakage Current Turn-on Time (IO = 80% of IO, max; VO within 1% of steady state; see Figure 17.) Output Voltage Set-point Adjustment (trim), Each Output: Note: There are trim restrictions based on output voltage combinations. Refer to the Feature Description section for details. Output Overvoltage Protection (shutdown) * These are manufacturing test limits. In some situations, results may differ. Solder Ball and Cleanliness Requirements The open frame (no case or potting) power module will meet the solder ball requirements per J-STD-001B. These requirements state that solder balls must neither be loose nor violate the power module minimum electrical spacing. The cleanliness designator of the open frame power module is C00 (per J specification). 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 circuit-board 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 the Board-Mounted Power Modules Soldering and Cleaning Application Note (AP97-021EPS.) Tyco Electronics Corp. 5 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Characteristic Curves 1.8 86 1.6 85 84 1.4 IO = 12.0 A IO = 6.0 A IO = 1.0 A 1.2 1.0 0.8 0.6 0.4 EFFICIENCY, (%) INPUT CURRENT, II (A) The following figures provide typical characteristics for the power modules. The figures are identical for both on/off configurations. 83 82 VI = 48 V VI = 36 V VI = 75 V 81 80 79 78 77 0.2 76 0.0 0 6 75 12 18 24 30 36 42 48 54 60 66 72 78 4 INPUT VOLTAGE, VI (V) 6 8 10 12 TOTAL OUTPUT CURRENT, Io (A) 8-2669 (F) Figure 3. Typical HW050AF1 Converter Efficiency vs. Output Current at Room Temperature 1.8 85 1.6 84 1.4 83 1.2 IO = 16.0 A IO = 8.0 A IO = 1.0 A 1.0 0.8 0.6 0.4 EFFICIENCY, (%) INPUT CURRENT, II (A) Figure 1. Typical HW050AF1 Input Characteristics at Room Temperature 82 VI = 48 V VI = 36 V VI = 75 V 81 80 79 78 77 0.2 76 0.0 0 6 12 18 24 30 36 42 48 54 60 66 72 78 75 4 INPUT VOLTAGE, VI (V) 6 8 10 12 14 16 TOTAL OUTPUT CURRENT, Io (A) 8-2670 (F) Figure 2. Typical HW050FG1 Input Characteristics at Room Temperature 6 Figure 4. Typical HW050FG1 Converter Efficiency vs. Output Current at Room Temperature Tyco Electronics Corp. Data Sheet May 21, 2001 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Characteristic Curves (continued) OUTPUT VOLTAGE, VO (V) (50 mV/div) VI = 36 V OUTPUT VOLTAGE, VO (V) (100 mV/div) VI = 36 V VI = 48 V VI = 48 V VI = 75 V VI = 75 V TIME, t (2 s/div) 8-2593 (F) TIME, t (2 s/div) 8-2673 (F) Figure 7. Typical HW050FG1 Output Ripple Voltage 3.3 V Output at Room Temperature and IO = IO, max, Different Input Voltage Figure 5. Typical HW050AF1 Output Ripple Voltage 5 V Output at Room Temperature and IO = IO, max, Different Input Voltage OUTPUT VOLTAGE, VO (V) (50 mV/div) VI = 36 V OUTPUT VOLTAGE, VO (V) (100 mV/div) VI = 36 V VI = 48 V VI = 48 V VI = 75 V VI = 75 V TIME, t (2 s/div) 8-2594 (F) Figure 8. Typical HW050FG1 Output Ripple Voltage 2.5 V at Room Temperature and IO = IO, max, Different Input Voltage TIME, t (2 s/div) 8-2674 (F) Figure 6. Typical HW050AF1 Output Ripple Voltage 3.3 V Output at Room Temperature and IO = IO, max, Different Input Voltage Tyco Electronics Corp. 7 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 OUTPUT VOLTAGE, VO (V) (100 mV/div) VO1 VO2 OUTPUT CURRENT, IO2 (A) (5 A/div) OUTPUT CURRENT, IO1 (A) (5 A/div) OUTPUT VOLTAGE, VO (V) (100 mV/div) Characteristic Curves (continued) IO1 VO1 VO2 IO1 TIME, t (100 s/div) TIME, t (100 s/div) 8-3085 (F) 8-3086 (F) Note: Tested without any load capacitance. Adding load capacitance will improve performance. Note: Tested without any load capacitance. Adding load capacitance will improve performance. Figure 9. Typical HW050AF1 Transient Response to Step Decrease in Load, IO1 = 50% to 25% of IO1, max, IO2 = 30% of IO2, max, at Room Temperature and 48 V Input (Waveform Averaged to Eliminate Ripple Component.) Figure 10. Typical HW050AF1 Transient Response to Step Decrease in Load, IO2 = 50% to 25% of IO2, max, IO1 = 30% of IO1, max, at Room Temperature and 48 V Input (Waveform Averaged to Eliminate Ripple Component.) 8 Tyco Electronics Corp. Data Sheet May 21, 2001 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W OUTPUT VOLTAGE, VO (V) (100 mV/div) VO1 VO2 OUTPUT CURRENT, IO2 (A) (5 A/div) OUTPUT CURRENT, IO1 (A) (5 A/div) OUTPUT VOLTAGE, VO (V) (100 mV/div) Characteristic Curves (continued) IO1 VO1 VO2 IO2 TIME, t (100 s/div) TIME, t (100 s/div) 8-3087 (F) 83088 (F) Note: Tested without any load capacitance. Adding load capacitance will improve performance. Note: Tested without any load capacitance. Adding load capacitance will improve performance. Figure 11. Typical HW050AF1 Transient Response to Step Increase in Load, IO1 = 50% to 75% of IO1, max, IO2 = 30% of IO2, max, at Room Temperature and 48 V Input (Waveform Averaged to Eliminate Ripple Component.) Figure 12. Typical HW050AF1 Transient Response to Step Increase in Load, IO2 = 50% to 75% of IO2, max, IO1 = 30% of IO1, max, at Room Temperature and 48 V Input (Waveform Averaged to Eliminate Ripple Component.) Tyco Electronics Corp. 9 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 OUTPUT VOLTAGE, VO (V) (200 mV/div) VO1 VO2 OUTPUT CURRENT, IO2 (A) (5 A/div) OUTPUT CURRENT, IO (A) (5 A/div) OUTPUT VOLTAGE, VO (V) (200 mV/div) Characteristic Curves (continued) IO1 TIME, t (100 s/div) 8-3089 (F) Note: Tested without any load capacitance. Adding load capacitance will improve performance. Figure 13. Typical HW050FG1 Transient Response to Step Decrease in Load, IO1 = 50% to 25% of IO1, max, IO2 = 30% of IO2, max, at Room Temperature and 48 V Input (Waveform Averaged to Eliminate Ripple Component.) 10 VO1 VO2 IO2 TIME, t (100 s/div) 8-3090 (F) Note: Tested without any load capacitance. Adding load capacitance will improve performance. Figure 14. Typical HW050FG1 Transient Response to Step Decrease in Load, IO2 = 50% to 25% of IO2, max, IO1 = 30% of IO1, max, at Room Temperature and 48 V Input (Waveform Averaged to Eliminate Ripple Component.) Tyco Electronics Corp. Data Sheet May 21, 2001 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W OUTPUT VOLTAGE, VO (V) (200 mV/div) VO1 VO2 OUTPUT CURRENT, IO2 (A) (5 A/div) OUTPUT CURRENT, IO1 (A) (5 A/div) OUTPUT VOLTAGE, VO (V) (200 mV/div) Characteristic Curves (continued) IO1 VO1 VO2 IO2 TIME, t (100 s/div) TIME, t (100 s/div) 8-3091 (F) 8-3092 (F) Note: Tested without any load capacitance. Adding load capacitance will improve performance. Note: Tested without any load capacitance. Adding load capacitance will improve performance. Figure 15. Typical HW050FG1 Transient Response to Step Increase in Load, IO1 = 50% to 75% of IO1, max, IO2 = 30% of IO2, max, at Room Temperature and 48 V Input (Waveform Averaged to Eliminate Ripple Component.) Figure 16. Typical HW050FG1 Transient Response to Step Increase in Load, IO2 = 50% to 75% of IO2, max, IO1 = 30% of IO1, max, at Room Temperature and 48 V Input (Waveform Averaged to Eliminate Ripple Component.) Tyco Electronics Corp. 11 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Characteristic Curves (continued) Data Sheet May 21, 2001 Test Configurations OUTPUT VOLTAGE, VO (V) (2 V/div) TO OSCILLOSCOPE CURRENT PROBE LTEST VO1 V(+) 12 H BATTERY VO2 33 F CS 100 F ESR < 0.7 ESR < 0.1 @ 20 C @ 20 C 100 kHz 100 kHz V(-) REMOTE ON/OFF VON/OFF (V) 8-2794 (F) Note: Measure input reflected-ripple current with a simulated source inductance (LTEST) of 12 H. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 19. Input Reflected-Ripple Test Setup COPPER STRIP VO(+) TIME, t (5 ms/div) 8-2679 1.0 F Note: Tested without any load capacitance. Figure 17. Typical Start-Up from Remote On/Off HW050AF; IO = IO, max 10 F SCOPE RESISTIVE LOAD COM OUTPUT VOLTAGE, VO (V) (1 V/div) 8-2795 (F) VO1 Note: Use a 1.0 F ceramic capacitor and a 10 F aluminum or tantalum capacitor. Scope measurement should be made using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in.) from the module. VO2 Figure 20. Peak-to-Peak Output Noise Measurement Test Setup REMOTE ON/OFF VOLTAGE, VON/OFF (V) VO1 1.0 F 10 F 1.0 F 10 F SCOPE RLOAD1 COM RLOAD2 VO2 8-2796 (F) TIME, t (5 ms/div) 8-2599 (F) Note: Tested without any load capacitance. Figure 18. Typical Start-Up from Remote On/Off HW050FG; IO = IO, max Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. [ V O1 (+) - V O1 (-) ]I O + [ V O2 (+) - V O2 (-) ]I O = ------------------------------------------------------------------------------------------------------------ x 100 [ V I (+) - V I (-) ] I I Figure 21. Output Voltage and Efficiency Measurement Test Setup 12 Tyco Electronics Corp. Data Sheet May 21, 2001 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Design Considerations Input Source Impedance The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the power module. For the test configuration in Figure 19, a 33 F electrolytic capacitor (ESR < 0.7 at 100 kHz) mounted close to the power module helps ensure stability of the unit. For other highly inductive source impedances, consult the factory for further application guidelines. Safety Considerations For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL 60950, CSA C22.2 No. 60950-00, VDE 0805 (IEC60950). If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75 Vdc), for the module's output to be considered meeting the requirements of safety extra-low voltage (SELV), all of the following must be true: The input source is to be provided with reinforced insulation from any other hazardous voltages, including the ac mains. One VI pin and one VO pin are to be grounded or both the input and output pins are to be kept floating. The input pins of the module are not operator accessible. Another SELV reliability test is conducted on the whole system, as required by the safety agencies, on the combination of supply source and the subject module to verify that under a single fault, hazardous voltages do not appear at the module's output. Note: Do not ground either of the input pins of the module without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pins and ground. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. Tyco Electronics Corp. For input voltages exceeding 60 Vdc but less than or equal to 75 Vdc, these converters have been evaluated to the applicable requirements of BASIC INSULATION between secondary DC MAINS DISTRIBUTION input (classified as TNV-2 in Europe) and unearthed SELV outputs. The input to these units is to be provided with a maximum 6 A normal-blow fuse in the ungrounded lead. Feature Descriptions 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 shifts from voltage control to current control. The form of current-limit used is hiccup mode. The unit operates normally once the output current is brought back into its specified range. Average output current during hiccup mode is 30% of IO, max. Remote On/Off Two remote on/off options are available. Positive logic remote on/off turns the module on during a logic-high voltage on the ON/OFF pin, and off during a logic low. Negative logic remote on/off turns the module off during a logic high and on during a logic low. Negative logic, device code suffix "1," is the factory-preferred configuration. To turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the VI(-) terminal (Von/off). The switch can be an open collector or equivalent (see Figure 22). A logic low is Von/off = 0 V to 1.2 V. The maximum Ion/off during a logic low is 1 mA. The switch should maintain a logic-low voltage while sinking 1 mA. During a logic high, the maximum Von/off generated by the power module is 6.1 V. The maximum allowable leakage current of the switch at Von/off = 6.1 V is 50 A. If not using the remote on/off feature, do one of the following: For negative logic, short ON/OFF pin to VI(-). For positive logic, leave ON/OFF pin open. 13 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Feature Descriptions (continued) Remote On/Off (continued) ION/OFF + VI(+) VO(+) ON/OFF TRIM RLOAD ON/OFF RADJ-DOWN VON/OFF - VI(+) COM VO2(+) LOAD COM VI(+) VO1(+) 8-2798 (F) Figure 23. Circuit Configuration to Decrease Output Voltage VI(-) Output Voltage Set-Point Adjustment (Trim) Output voltage set point adjustment (trim) allows the output voltage set point to be increased or decreased. There are two trim pins, one for each output. The adjustment (trim) is accomplished by connecting an external resistor between the TRIM pin and either the Vo(+) pin or COM pin of the output to be adjusted. In order to maintain the output voltage set-point percentage accuracy, the trim resistor tolerance should be 0.1%.The trim resistor should be positioned close to the module. If not using the trim feature, leave the TRIM pin(s) open. Connecting an external resistor (Rtrim-down) between the TRIM pin of the desired output and COM pin decreases the output voltage set point (see Figure 23). The following equations determine the required external-resistor value to obtain a percentage output voltage change of %. ( 511 ) V O 1 R adj-down = -------------- - 6.11 % k ( 100 ) V O 2 R adj-down = -------------- - 1.33 % k The test results for these configurations are displayed in Figure 24. 100 90 80 70 60 50 40 30 20 10 5 10 15 20 25 % CHANGE IN OUTPUT VOLTAGE (%) 8-2680 (F) Figure 24. Resistor Selection for Decreased Output Voltage for VO1 ADJUSTMENT RESISTOR VALUE (k) Figure 22. Remote On/Off Implementation ADJUSTMENT RESISTOR VALUE (k) 8-2800 (F) 20 18 16 14 12 10 8 6 4 2 5 10 15 20 25 % CHANGE IN OUTPUT VOLTAGE (%) 8-2681 (F) Figure 25. Resistor Selection for Decreased Output Voltage for VO2 14 Tyco Electronics Corp. HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 ADJUSTMENT RESISTOR VALUE (k) Feature Descriptions (continued) Output Voltage Set-Point Adjustment (Trim) (continued) VI(+) VO(+) ON/OFF RADJ-UP RLOAD CASE TRIM VI(+) COM 180 160 140 120 100 AF FG 80 60 40 20 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 % CHANGE IN OUTPUT VOLTAGE (%) 8-2797 (F) ADJUSTMENT RESISTOR VALUE (k) Figure 26. Circuit Configuration to Increase Output Voltage 8-3094 (F) Figure 28. Resistor Selection for Increased Output Voltage for VO2 1700 Connecting an external resistor (Rtrim-up) between the TRIM pin and Vo(+) pin of the desired output increases the output voltage set point (see Figure 26). 1500 1300 The following equation determines the required external-resistor value to obtain a percentage output voltage change of %. 1100 900 AF FG 700 5.11V O ( 100 + % ) V O 1 R trim-up = ------------------------------------------------- 1.225% 500 300 100 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 V O ( 100 + % ) V O 2 R trim-up = ------------------------------------- 1.225% - 511 ---------- - 6.11 k % - 100 ---------- - 1.33 k % The test results for these configurations are displayed in Figure 27. % CHANGE IN OUTPUT VOLTAGE (%) 8-3093 (F) Figure 27.Resistor Selection for Increased Output Voltage for VO1 Note: The following voltage range restrictions apply: HW050AF: For Vo1 set to 5.0 V Vo2 range is 1.5 V to 3.46 V HW050FG: For Vo1 set to 3.3 V Vo2 range is 1.5 V to 2.5 V For Vo1 set to 2.5 V Vo2 range is 1.5 V to 1.8 V Note: The voltage between the VO(+) and COM terminals must not exceed the minimum output overvoltage shutdown voltage as indicated in the Feature Specifications table. Tyco Electronics Corp. 15 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Feature Descriptions (continued) Thermal Considerations Output Voltage Set-Point Adjustment (Trim) (continued) The power modules operate in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the unit. Heat is removed by convection and radiation to the surrounding environment. Consult the factory if you need to increase the output voltage more than the above limitation. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power. Output Overvoltage Protection The thermal data presented is based on measurements taken in a wind tunnel. The test setup shown in Figure 29 was used to collect data for Figure 32 through Figure 35. Note that the orientation of the module with respect to airflow affects thermal performance. Two orientations are shown in Figure 30 and Figure 31. 3.2 (8.0) AIRFLOW The output overvoltage protection consists of circuitry that monitors the voltage on the output terminals. If the voltage on the output terminals exceeds the overvoltage protection threshold, then the module will shut down and latch off. The overvoltage latch is reset by either cycling the input power for one second or by toggling the ON/OFF pin for one second. AIR VELOCITY AND AMBIENT TEMPERATUR MEASURE HE 4 (1.0) 76.2 (3.0) 8-2603 (F) Overtemperature Protection Note: Dimensions are in millimeters and (inches). Figure 29. Thermal Test Setup To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The shutdown circuit will not engage unless the unit is operated above the maximum device temperature. Recovery for the thermal shutdown is accomplished by cycling the dc input power off for at least one second or toggling the primary referenced on/off signal for at least one second. 16 Tyco Electronics Corp. Data Sheet May 21, 2001 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Thermal Considerations (continued) AIRFLOW 8-2604 (F) Figure 30. Best Orientation (Top View) THERMOCOUPLE LOCATION Q18 Q18 AIRFLOW 8-2605 (F) Figure 31. Worst Orientation (Top View) Proper cooling can be verified by measuring the power modules temperature at the top center of the case of the body of Q18 as shown in Figure 31. The temperature at this location should not exceed 100 C at full power. The output power of the module should not exceed the rated power. Tyco Electronics Corp. 17 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Thermal Considerations (continued) 11 To predict the approximate cooling needed for the module, determine the power dissipated as heat by the unit for the particular application. Figure 32 and Figure 33 show typical heat dissipation for the module over a range of output currents. IO1 = IO2 = 1/2 IO for Figure 32 and Figure 33. POWER DISSIPATION, PD (W) 10 DISSIPATED POWER, PD (W) 10 Convection Requirements for Cooling 8 7 6 5 3.0 m/s (600ft./min.) 2.0 m/s (400ft./min.) 1.5 m/s (300ft./min.) 1.0 m/s (200ft./min.) 0.5 m/s (100ft./min.) 0.1 m/s (NAT. CONV.) (20ft./min.) 4 3 2 1 0 VI = 75 V VI = 36 V VI = 48 V 8 9 0 10 20 30 40 50 60 70 80 90 100 LOCAL AMBIENT TEMPERATURE, TA (C) 8-2708 (F) 6 Figure 34. Power Derating vs. Local Ambient Temperature and Air Velocity; Best Orientation 4 11 2 4 6 8 10 12 TOTAL OUTPUT CURRENT, Io (A) 8-2601 (F) Figure 32. HW050AF1 Power Dissipation vs. Output Current, TA = 25 C POWER DISSIPATION, PD (W) 10 9 8 7 6 5 3.0 m/s (600ft./min.) 2.0 m/s (400ft./min.) 1.5 m/s (300ft./min.) 1.0 m/s (200ft./min.) 0.5 m/s (100ft./min.) 0.1 m/s (NAT. CONV.) (20ft./min.) 4 3 2 1 VI = 75 V VI = 36 V VI = 48 V 8 0 0 10 20 30 40 50 60 70 80 90 100 LOCAL AMBIENT TEMPERATURE, TA (C) 6 8-2741 (F) Figure 35. Power Derating vs. Local Ambient Temperature and Air Velocity; Worst Orientation 4 2 2 4 6 8 10 12 14 TOTAL OUTPUT CURRENT, Io (A) 16 8-2600 (F) Figure 33. HW050FG1 Power Dissipation vs. Output Current, TA = 25 C With the known heat dissipation, module orientation with respect to airflow, and a given local ambient temperature, the minimum airflow can be chosen from the derating curves in Figure 34 through Figure 35. 18 DISSIPATED POWER, PD (W) 10 2 For example, if the HW050FG1 dissipates 7.5 W of heat at 14 A load and 48 V input voltage, the minimum airflow for best module orientation in a 65 C environment is 1 m/s (200 ft./min.). Keep in mind that these derating curves are approximations of the ambient temperatures and airflows required to keep the power module temperature below its maximum rating. Once the module is assembled in the actual system, the module's temperature should be checked to ensure it does not exceed 100 C. Tyco Electronics Corp. Data Sheet May 21, 2001 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W EMC Considerations Figure 36 shows the suggested configuration to meet conducted limits of EN55022 Class B. VI 2x 0.47 F 100 V V(+) 33 F 100 V 3.3 mH COMMONMODE CHOKE HW050 V(-) VO (GROUNDED) COM 100 nF CERAMIC 8-2684 (F) Figure 36. Suggested Configuration for EN55022 For assistance with designing for EMC compliance, please refer to the FLTR100V10 data sheet (DS99-294EPS). Layout Considerations Copper paths must not be routed beneath the power module mounting inserts. For additional layout guidelines, refer to FLTR100V10 data sheet (DS99-294EPS). Tyco Electronics Corp. 19 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Outline Diagram Dimensions are in millimeters and (inches). Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) x.xx mm 0.25 mm (x.xxx in. 0.010 in.) Top View VIEW ON TOP SIDE OF PWB 99.1 (3.90) VO1TRIM 10.16 (0.400) PITCH = 5.08 (0.200) NONACCUMULATIVE VO2TRIM VO1 VO1 ON/OFF 59.5 (2.34) VIN(-) COM VIN(+) COM 35.56 (1.400) PITCH = 5.08 (0.200) NONACCUMULATIVE VO2 25.14 (0.99) 24.38 (0.96) VO2 10.16 (0.400) Side View 8.5 (0.335) 6.1 (0.24) MAX PIN TERMINATION IN 11 PLACES SOLDER-PLATED BRASS NOM MATING PWB SURFACE 1.05 (0.041) 0.99 (0.039) Bottom View VIEW ON UNDER SIDE OF PWB 94.36 (3.715) 93.60 (3.685) 2.92 (0.115) 2.16 (0.085) 4.0 (0.16) IN 2 PLACES 11 10 55.4 (2.181) IN 2 PLACES 1 9 2 8 3 7 6 5 3.2 TYP (0.13) 4 4.3 (0.17) 2 PLACES CONDUCTIVE SPACER IN 4 PLACES 3.2 TYP (0.13) 90.2 (3.55) IN 2 PLACES 8-2799 (F) 20 Tyco Electronics Corp. HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Recommended Hole Pattern Component-side footprint. Dimensions are in millimeters and (inches). 3.2 (0.100) SQUARE STANDOFF, 4 PLACES 85.87 (3.38) 4.30 (0.17) 4 PITCHES OF 5.08 NONACCUMULATIVE 4 10.16 (0.4) 5.08 (0.2) 59.5 (2.34) 5 6 3 7 2 8 1 9 10 24.77 (0.975) 20.32 (0.8) 51.40 (2.02) 15.24 (0.6) 11 3 PITCHES OF 5.08 NONACCUMULATIVE 4.0 (0.157) 2.54 (0.1) 93.98 (3.70) 99.1 (3.90) 8-2607 (F) Table 3. Pin Function Pin Function 1 2 3 4 5 6 7 8 9 10 11 VI(+) VI(-) ON/OFF VO1TRIM VO2TRIM VO1 VO1 COM COM VO2 VO2 Tyco Electronics Corp. 21 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Ordering Information Please contact your Tyco Electronics' Account Manager or Field Application Engineer for pricing and availability. Input Voltage 48 V 48 V 48 V 48 V 48 V 48 V 48 V 48 V Output Voltage 5.0 V and 3.3 V 5.0 V and 3.3 V 5.0 V and 3.3 V 3.3 V and 2.5 V 3.3 V and 2.5 V 3.3 V and 2.5 V 3.3 V and 2.5 V 3.3 V and 2.5 V Output Power 53.2 W 53.2 W 53.2 W 49.6 W 49.6 W 49.6 W 49.6 W 49.6 W Device Code HW050AF HW050AF1 HW050AF6 HW050FG HW050FG1 HW050FG6 HW050FG8 HW050FG-B Comcode 108365610 TBD 108958240 108341710 TBD 108891680 108934233 108840190 Optional features may be chosen from the device code suffixes shown below. The feature suffixes are listed numerically in descending order. Please contact your Tyco Electronics Account Manager or Application Engineer for pricing and availability of options. 22 Option Device Code Suffix Short pins: 2.79 mm +0.5/-0.25 mm (0.110 in. + 0.020/-0.010 in.) Short pins: 3.81 mm +0.5/-0.25 mm (0.110 in. + 0.020/-0.010 in.) Negative remote on/off logic 8 6 1 Tyco Electronics Corp. Data Sheet May 21, 2001 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Notes Tyco Electronics Corp. 23 HW050AF and HW050FG Power Modules: dc-dc Converters: 36 to 75 Vdc Input, 5.0 and 3.3 Vdc or 3.3 and 2.5 Vdc Dual Output; 50 W Data Sheet May 21, 2001 Europe, Middle-East and Africa Headquarters Tyco Electronics (UK) Ltd Tel: +44 (0) 1344 469 300, Fax: +44 (0) 1344 469 301 World Wide Headquarters Tyco Electronics Power Systems, Inc. 3000 Skyline Drive, Mesquite, TX 75149, USA +1-800-526-7819 FAX: +1-888-315-5182 (Outside U.S.A.: +1-972-284-2626, FAX: +1-972-284-2900) www.power.tycoelectronics.com e-mail: techsupport1@tycoelectronics.com Central America-Latin America Headquarters Tyco Electronics Power Systems Tel: +54 11 4316 2866, Fax: +54 11 4312 9508 Asia-Pacific Headquarters Tyco Electronics Singapore Pte Ltd Tel: +65 482 0311, Fax: 65 480 9299 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 product(s) or information. (c) 2001 Tyco Electronics Power Systems, Inc. (Mesquite, Texas) All International Rights Reserved. Printed in U.S.A. May 21, 2001 FDS01-028EPS (Replaces DS00-091EPS) Printed on Recycled Paper