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| Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Features s Small size: 61.0 mm x 57.9 mm x 12.7 mm (2.40 in. x 2.28 in. x 0.50 in.) High power density High efficiency: 80% typical Low output noise Constant frequency Metal baseplate 2:1 input voltage range Anti-rollback circuit Overcurrent protection Current-limit set-point adjustment Primary and secondary remote on/off Remote sense Adjustable output voltage: 60% to 110% of VO, nom Output overvoltage protection Overvoltage set-point adjustment Synchronization Forced load sharing (parallelable) Parallelable with FW300F1 Output current monitor Overtemperature protection Power good signal Thermal warning signal Case ground pin s s s s s s s s The JFW-Series Power Modules use advanced, surface-mount technology and deliver high-quality, efficient, compact dc-dc conversion. s s s s Applications s s s s Redundant and/or distributed power architectures Workstations Computer equipment Communications equipment s s s s s s Options s s s Heat sinks available for extended operation Choice of primary remote on/off logic configuration Delayed current-limit shutdown s s s Description The JFW-Series Power Modules are dc-dc converters that operate over an input voltage range of 36 Vdc to 75 Vdc and provide a precisely regulated dc output. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. The modules have maximum power ratings from 33 W to 99 W at typical full-load efficiencies of 80%. The sealed modules have metal baseplates for excellent thermal performance. Threaded-through holes are provided for easy mounting or adding a heat sink for high-temperature applications. Listed above are the enhanced features for convenience and flexibility in redundant and/or distributed power applications. s s s ISO *9001 Certified manufacturing facilities UL1950 Recognized, CSA C22.2 No. 950-95 Certified, and VDE 0805 (EN60950, IEC950) Licensed CE mark meets 73/23/EEC and 93/68/EEC directives s * ISO is a registered trademark of the International Organization of Standardization. UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Assn. 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.) JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 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 Input Voltage I/O Isolation Voltage (for 1 minute) Operating Case Temperature (See Thermal Considerations section.) Storage Temperature Symbol VI -- TC Tstg Min -- -- -40 -55 Max 80 1500 100 125 Unit Vdc Vdc C C Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Table 1. Input Specifications Parameter Operating Input Voltage Maximum Input Current (VI = 0 V to 75 V; IO = IO, max; see Figures 1--4.): JFW050F JFW075F JFW100F JFW150F Maximum Input Current (VI = 36 V to 75 V; IO = IO, max; see Figures 1--4.): JFW050F JFW075F JFW100F JFW150F Inrush Transient Input Reflected-ripple Current, Peak-to-peak (5 Hz to 20 MHz, 12 H source impedance; see Figure 17.) Input Ripple Rejection (120 Hz) Fusing Considerations CAUTION: This power module is not internally fused. An input line fuse must always be used. This encapsulated 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 20 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. Symbol VI Min 36 Typ 48 Max 75 Unit Vdc II, max II, max II, max II, max -- -- -- -- -- -- -- -- 1.6 2.5 3.3 5.1 A A A A II, max II, max II, max II, max i2t II -- -- -- -- -- -- -- -- -- -- -- 5 1.3 2.0 2.6 4.0 1.0 -- A A A A A2s mAp-p -- -- 60 -- dB 2 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Electrical Specifications (continued) Table 2. Output Specifications Parameter Output Voltage Set Point (VI = 48 V; IO = IO, max; TC = 25 C) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life; see Figure 19.) Output Regulation: Line (VI = 36 V to 75 V) Load (IO = IO, min to IO, max) Temperature (TC = -40 C to +100 C) Output Ripple and Noise Voltage (See Figure 18.): RMS Peak-to-peak (5 Hz to 20 MHz) External Load Capacitance Output Current (At IO < IO, min, the module may exceed output ripple specifications.) Output Current-limit Inception (untrimmed; VO = 90% of VO, nom) Device All All Symbol VO, set VO Min 3.25 3.20 Typ 3.3 -- Max 3.35 3.40 Unit Vdc Vdc All All All -- -- -- -- -- -- 0.01 0.05 15 0.1 0.2 50 %VO %VO mV Output Short-circuit Current (VO = 250 mV) Efficiency (VI = 48 V; IO = IO, max; TC = 70 C; see Figures 9--12 and 19.) Switching Frequency Dynamic Response (yIO/yt = 1 A/10 s, VI = 54 V, TC = 25 C; tested with a 10 F aluminum and a 1.0 F ceramic capacitor across the load; see Figures 14 and 15): Load Change from IO = 50% to 75% of IO, max: Peak Deviation Settling Time (VO < 10% of peak deviation) Load Change from IO = 50% to 25% of IO, max: Peak Deviation Settling Time (VO < 10% of peak deviation) All All All JFW050F JFW075F JFW100F JFW150F JFW050F JFW075F JFW100F JFW150F All JFW050F JFW075F JFW100F JFW150F All -- -- -- IO IO IO IO IO, cli IO, cli IO, cli IO, cli -- -- -- -- 0 0.5 0.5 0.5 0.5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 11.5 17.3 23.0 34.5 170 80 80 80 80 500 40 150 * 10 15 20 30 13.0 14.5 26 39 -- -- -- -- -- -- mVrms mVp-p F A A A A A A A A %IO, max % % % % kHz All All All All -- -- -- -- -- -- -- -- 150 300 150 300 -- -- -- -- mV s mV s * Consult your sales representative or the factory. These are manufacturing test limits. In some situations, results may differ. Table 3. Isolation Specifications Parameter Isolation Capacitance Isolation Resistance Min -- 10 Typ 2500 -- Max -- -- Unit pF M3/4 Tyco Electronics Corp. 3 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 General Specifications Parameter Calculated MTBF (IO = 80% of IO, max; TC = 40 C) Weight Min -- Typ 2,000,000 -- Max 100 (3.5) Unit hr g (oz.) Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions and Design Considerations sections for further information. Table 4. Feature Specifications Parameter Remote On/Off Signal Interface (VI = 0 V to 75 V; open collector or equivalent compatible; signal referenced to VI(-) terminal; see Figure 20 and Feature Descriptions.): JFWxxxF1 Preferred Logic: Both Primary and Secondary Referenced Remote On/Off: Logic Low--Module On Logic High--Module Off JFWxxxF Optional Logic (optional for primary referenced remote on/off only): Primary Referenced Remote On/Off: Logic Low--Module Off Logic High--Module On Secondary Referenced Remote On/Off: Logic Low--Module On Logic High--Module Off Logic Low: Ion/off = 1.0 mA Von/off = 0.0 V Logic High (open collector): Ion/off = 0.0 A Leakage Current Turn-on Time (IO = 80% of IO, max; VO within 1% of steady state; see Figure 16) Output Voltage Adjustment (See Feature Descriptions.): Output Voltage Remote-sense Range Output Voltage Set-point Adjustment Range (trim) Output Overvoltage Protection Overvoltage Set-point Adjustment Range (shutdown) Synchronization: Clock Amplitude Clock Pulse Width Fan-out Capture Frequency Range Forced Load Sharing Accuracy Output Current Monitor (IO = IO, max, TC = 70 C): JFW050F JFW075F JFW100F JFW150F * These are manufacturing test limits. In some situations, results may differ. Symbol Min Typ Max Unit Von/off Ion/off Von/off Ion/off -- 0 -- -- -- -- -- -- -- -- 20 1.2 1.0 15 50 35 V mA V A ms -- -- VO, ovp -- -- -- -- -- -- IO, mon IO, mon IO, mon IO, mon -- 60 4.0* 50 4.00 0.4 -- 425 -- -- -- -- -- -- -- -- -- -- -- -- -- 10 0.410 0.273 0.205 0.137 0.5 110 5.0* 100 5.00 -- 1 575 -- -- -- -- -- V %VO, nom V %VO, ovp, max V s -- kHz %IO, rated V/A V/A V/A V/A 4 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Feature Specifications (continued) Table 4. Feature Specifications (continued) Parameter Overtemperature Protection (See Figure 27.) Power Good Signal (Open collector output: low level indicates power good.): Output Sink Current (VO 1.5 V) Maximum Voltage High-state Internal Impedance to Ground Thermal Warning Signal (Open collector output; low level indicates overtemperature shutdown is imminent.): Output Sink Current (VO 1.5 V) Maximum Voltage High-state Internal Impedance to Ground Overcurrent Threshold Adjustment Range Overcurrent Shutdown Delay (optional) Symbol TC -- -- -- Min -- -- -- -- Typ 105 -- -- 200 Max -- 50 36 -- Unit C mA V k3/4 -- -- -- -- -- -- -- -- 10 -- -- -- 200 -- 4 6 36 -- 100 -- mA V k3/4 %IO, cli, nom s Solder, Cleaning, and Drying Considerations Post solder cleaning is usually the final circuit-board assembly process prior to electrical 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 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 Characteristic Curves The following figures provide typical characteristics for the power modules. The figures are applicable to both on/off configurations. 1.4 1. 2 1.0 0.8 0.6 0.4 IO = 1 A 0.2 0.0 0 IO = 5 A IO = 10 A 2.5 IO = 20 A INPUT CURRENT, II (A) INPUT CURRENT, II (A) 2.0 1.5 IO = 10 A 1.0 0.5 IO = 2 A 0.0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 0 10 20 30 40 50 60 70 80 INPUT VOLTAGE, V I (V) 8-2361 (C) INPUT VOLTAGE, V I (V) 8-2363 (C) Figure 1. Typical JFW050F Input Characteristics at Room Temperature Figure 3. Typical JFW100F Input Characteristics at Room Temperature 2.0 1.8 INPUT CURRENT, II (A) 4.0 3.5 INPUT CURRENT, II (A) IO = 15 A 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 10 20 30 40 50 3.0 2.5 2.0 1.5 1.0 IO = 30 A IO = 7.5 A IO = 15 A IO = 1.5 A IO = 3 A 0.5 70 80 60 0.0 0 10 20 30 40 50 60 70 80 INPUT VOLTAGE, V I (V) INPUT VOLTAGE, V I (V) 8-2362 (C) 8-2364 (C) Figure 2. Typical JFW075F Input Characteristics at Room Temperature Figure 4. Typical JFW150F Input Characteristics at Room Temperature 6 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Characteristic Curves (continued) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 2 4 6 8 10 12 14 16 VI = 36 V VI = 75 V VI = 54 V 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 5 10 15 VI = 36 V 20 25 VI = 75 V VI = 54 V OUTPUT VOLTAGE, VO (V) OUPUT VOLTAGE, VO (V) OUTPUT CURRENT, IO (A) 8-2365 (C) OUTPUT CURRENT, IO (A) 8-2367 (C) Figure 5. Typical JFW050F Output Characteristics at Room Temperature Figure 7. Typical JFW100F Output Characteristics at Room Temperature 3.5 3.5 OUTPUT VOLTAGE, VO (V) 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 5 10 15 20 25 30 OUTPUT VOLTAGE, VO (V) 3.0 2.5 2.0 1.5 1.0 0.5 0.0 VI = 36 V VI = 75 V VI = 55 V VI = 75 V VI = 36 V VI = 54 V 0 5 10 15 20 25 30 35 40 45 50 OUTPUT CURRENT, IO (A) 8-2366 (C) OUTPUT CURRENT, IO (A) 8-2368 (C) Figure 6. Typical JFW075F Output Characteristics at Room Temperature Figure 8. Typical JFW150F Output Characteristics at Room Temperature Tyco Electronics Corp. 7 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 Characteristic Curves (continued) 82 81 80 EFFICIENCY, (%) 79 78 77 76 75 74 73 72 2 3 4 5 6 7 8 9 10 OUTPUT CURRENT, IO (A) 8-2369 (C) 82 VI = 36 V EFFICIENCY, (%) 81 80 79 78 77 76 75 74 73 72 2 VI = 36 V VI = 55.5 V VI = 48 V VI = 75 V VI = 75 V 4 6 8 10 12 14 16 18 20 OUTPUT CURRENT, IO (A) 8-2371 (C) Figure 9. Typical JFW050F Converter Efficiency vs. Output Current at Room Temperature Figure 11. Typical JFW100F Converter Efficiency vs. Output Current at Room Temperature 81.5 80.5 79.5 VI = 36 V VI = 55 V 83 81 EFFICIENCY, (%) 79 77 75 73 71 69 67 65 2 4 6 8 10 12 14 16 VI = 36 V EFFICIENCY, (%) 78.5 77.5 76.5 75.5 74.5 73.5 72.5 72.0 VI = 75 V VI = 75 V VI = 54 V 3 6 9 12 15 18 21 24 27 30 OUTPUT CURRENT, IO (A) 8-2370 (C) OUTPUT CURRENT, IO (A) 8-2372 (C) Figure 10. Typical JFW075F Converter Efficiency vs. Output Current at Room Temperature Figure 12. Typical JFW150F Converter Efficiency vs. Output Current at Room Temperature 8 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Characteristic Curves (continued) VI = 75 V VI = 45 V OUTPUT CURRENT, IO (A) OUTPUT VOLTAGE, VO (V) (5 A/div) (200 mV/div) OUTPUT VOLTAGE, VO (V) (50 mV/div) 22.5 A 15 A VI = 36 V TIME, t (1 s/div) 8-2373 (C) TIME, t (500 s/div) 8-2375 (C) Note: See Figure 18 for test conditions. Figure 13. Typical JFW150F Output Ripple Voltage at Room Temperature, 36 Vdc to 75 V Input, and 30 A Output Note: Tested with a 10 F tantalum and a 1.0 F ceramic capacitor across the load. Figure 15. Typical JFW150F Transient Response to Step Increase in Load from 50% to 75% of Full Load at Room Temperature and 54 V Input (Waveform Averaged to Eliminate Ripple Component.) OUTPUT VOLTAGE, VO (V) (200 mV/div) NO LOAD, NO OUTPUT CAP FULL LOAD, NO OUTPUT CAP OUTPUT VOLTAGE, VO (V) (500 V/div) OUTPUT CURRENT, IO (A) (5 A/div) 7.5 A 330 f 1000 f 2200 f 5730 f TIME, t (500 s/div) 8-2374 (C) Note: Tested with a 10 F tantalum and a 1.0 F ceramic capacitor across the load. TIME, t (20 ms/div) 8-2559 (C) Figure 14. Typical JFW150F Transient Response to Step Decrease in Load from 50% to 25% of Full Load at Room Temperature and 54 V Input (Waveform Averaged to Eliminate Ripple Component.) Tyco Electronics Corp. Note: Tested with the capacitance indicated above across the load. Figure 16. Typical Start-Up from Remote On/Off JFW150F1; IO = Full Load 9 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 Test Configurations TO OSCILLOSCOPE CURRENT PROBE VI(+) Design Considerations Input Source Impedance LTEST 12 H CS 220 F ESR < 0.1 @ 20 C, 100 kHz BATTERY 33 F ESR < 0.7 @ 100 kHz VI(-) 8-203 (C).l 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 17, a 33 F electrolytic capacitor (ESR < 0.7 3/4 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. 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. 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., UL1950, CSA C22.2 No. 950-95, and VDE 0805 (EN60950, IEC950). Figure 17. Input Reflected-Ripple Test Setup COPPER STRIP VO(+) 1.0 F VO(-) 10 F SCOPE RESISTIVE LOAD 8-513 (C).b 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: s 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. The input source is to be provided with reinforced insulation from any 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. Figure 18. Peak-to-Peak Output Noise Measurement Test Setup s s SENSE(+) CONTACT AND DISTRIBUTION LOSSES s VI (+) II SUPPLY VI (-) CONTACT RESISTANCE VO(+) IO LOAD VO(-) SENSE(-) 8-749 (C) 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. 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 pin and ground. 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 maximum 20 A normal-blow fuse in the ungrounded lead. [ VO ( + ) - ( VO ( - ) ) ]IO = ------------------------------------------------------ x 100 [ VI ( + ) - ( VI ( - ) ) ]II % Figure 19. Output Voltage and Efficiency Measurement Test Setup 10 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Negative logic remote on/off turns the module off during a logic high and on during a logic low. Negative logic (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 primary remote on/off terminal (Von/off, pri) and the VI(-) terminal. The switch can be an open collector or equivalent (see Figure 20). A logic low is Von/off, pri = 0 V to 1.2 V. The maximum Ion/off, pri 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, pri generated by the power module is 15 V. The maximum allowable leakage current of the switch at Von/off, pri = 15 V is 50 A. If not using the primary remote on/off feature, do one of the following: s s Feature Descriptions Overcurrent Protection To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and optional delayed shutdown. At the point of current-limit inception, the unit shifts from voltage control to current control. If the output voltage is pulled very low during a severe fault, the current-limit circuit can exhibit either foldback or tailout characteristics (output current decrease or increase). The unit will operate normally once the output current is brought back into its specified range. If the module has the optional delayed current-limit shutdown, the unit will operate normally once the output current is brought back into its specified range, provided the overcurrent condition is removed before the module shuts down. The current-limit set point can be reduced by connecting a resistor between the overcurrent trim (OCTRIM) pin and SENSE(-) pin. The resistor value is derived by the following equation: 11 Itrim - 1.15 Irated Rcl-adj = --------------------------------------------------- k 1.15 Irated - Itrim Where: Rcl-adj is the value of an external resistor between the OCTRIM pin and SENSE(-) pin. Irated Itrim is the output current rating of the module. (not the output current limit inception). is the trimmed value of the output current-limit set point. For negative logic, short the ON/OFF pin to VI(-). For positive logic, leave the ON/OFF pin open. Secondary Remote On/Off The secondary remote on/off signal (S-ON/OFF pin) is only available with negative logic. The negative logic signal turns the module off during a logic high and on during a logic low. To turn the power module on and off, the user must supply a switch to control the voltage between the S-ON/OFF pin and the SENSE(-) pin (Von/off, sec). The switch can be an open collector or equivalent (see Figure 20). A logic low is Von/off, sec = 0 V to 1.2 V. The maximum Ion/off, sec 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, sec generated by the power module is 15 V. The maximum allowable leakage current of the switch at Von/off, sec = 15 V is 50 A. If not using the secondary remote on/off feature, short the S-ON/OFF pin to the SENSE(-) pin. Remote On/Off There are two remote on/off signals, a primary referenced signal and a secondary referenced signal. Both signals must be asserted on for the module to deliver output power. If either signal is asserted off, the module will not deliver output power. Both signals have internal pull-up circuits and are designed to interface with an open collector pull-down device. Typically, one on/off signal will be permanently enabled by hardwiring it to its return while the other on/off signal is used exclusively for control. Primary Remote On/Off VI(+) Ion/off, S- ON/OFF sec Ion/off, pri ON/OFF (PRIMARY) SENSE(-) Von/off, - V on/off, pri - VI(-) The primary remote on/off signal (ON/OFF) is available with either positive or negative logic. Positive logic turns the module on during a logic high and off during a logic low. Tyco Electronics Corp. Figure 20. Remote On/Off Implementation 11 + sec (SECONDARY) + 8-1398 (C) JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 Feature Descriptions (continued) Remote Sense Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections. The voltage between the remote-sense pins and the output terminals must not exceed the output voltage sense range given in the Feature Specifications table, i.e.: [VO(+) - VO(-)] - [SENSE(+) - SENSE(-)] 0.5 V The voltage between the VO(+) and VO(-) terminals must not exceed the output overvoltage shutdown voltage. This limit includes any increase in voltage due to remote-sense compensation and output voltage setpoint adjustment (trim), see Figure 21. For remote-sense operation with multiple paralleled units, see the Forced Load Sharing (Parallel Operation) section. If not using the remote-sense feature to regulate the output at the point of load, then connect SENSE(+) to VO(+) and SENSE(-) to VO(-) at the module. Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. 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 remote sense and 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 Voltage Set-Point Adjustment (Trim) Output voltage trim (VOTRIM pin) enables the user to increase or decrease the output voltage set point of a module. This is accomplished by connecting an external resistor between the VOTRIM pin and either the SENSE(+) or SENSE(-) pins. The trim resistor should be positioned close to the module. If not using the trim feature, leave the VOTRIM pin open. With an external resistor between the VOTRIM and SENSE(-) pins (Radj-down), the output voltage set point (VO, adj) decreases (see Figure 22). VI (+) ON/OFF CASE VI (-) VO (+) SENSE(+) TRIM Radj-down SENSE(-) VO(-) 8-748 (C).c RLOAD Figure 22. Circuit Configuration to Decrease Output Voltage The following equation determines the required external-resistor value to obtain a percentage output voltage change of y%. 100 R adj-down = --------- - 2 k % The test results for this configuration are displayed in Figure 23. This figure applies to all output voltages. SENSE(+) SENSE(-) VI(+) SUPPLY II VI(-) CONTACT RESISTANCE VO(-) CONTACT AND DISTRIBUTION LOSSES 8-651 (C).h VO(+) IO LOAD Figure 21. Effective Circuit Configuration for Single-Module Remote-Sense Operation 12 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W The voltage between the VO(+) and VO(-) terminals must not exceed the output overvoltage shutdown voltage. This limit includes any increase in voltage due to remote-sense compensation and output voltage setpoint adjustment (trim). Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. 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 remote sense and 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. ADJUSTMENT RESISTOR VALUE () 10M Feature Descriptions (continued) Output Voltage Set-Point Adjustment (Trim) (continued) ADJUSTMENT RESISTOR VALUE () 100 0 10 20 30 40 % CHANGE IN OUTPUT VOLTAGE ( %) 8-2377 (C) Figure 23. Resistor Selection for Decreased Output Voltage With an external resistor connected between the VOTRIM and SENSE(+) pins (Radj-up), the output voltage set point (VO, adj) increases (see Figure 24). VI (+) ON/OFF CASE VI (-) VO(+) SENSE(+) Radj-up VOTRIM SENSE(-) VO(-) 8-715 (C).g 1M 100k RLOAD 10k 0 2 4 6 8 10 % CHANGE IN OUTPUT VOLTAGE (%) 8-2099 (C) Figure 25. Resistor Selection for Increased Output Voltage Figure 24. Circuit Configuration to Increase Output Voltage The following equation determines the required external-resistor value to obtain a percentage output voltage change of y%. VO ( 100 + % ) ( 100 + 2 * % ) R adj-up = ------------------------------------- - -------------------------------------- k 1.225 * % % The test results for this configuration are displayed in Figure 25. Output Overvoltage Protection The output overvoltage shutdown consists of control circuitry, independent of the primary regulation loop, that monitors the voltage on the output terminals. The control loop of the clamp has a higher voltage set point than the primary loop (see Feature Specifications table). This provides a redundant voltage control that reduces the risk of output overvoltage and latches the converter off if an overvoltage occurs. Tyco Electronics Corp. 13 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 Feature Descriptions (continued) Output Overvoltage Protection (continued) Recovery from latched shutdown is accomplished by cycling the dc input power off for at least 1.0 second or by toggling the primary or secondary referenced remote on/off signal for at least 1.0 second. The overvoltage shutdown set point can be lowered by placing a resistor between the overvoltage trim (OVTRIM) pin and SENSE(-) pin. This feature is useful if the output voltage of the converter has been trimmed down and a corresponding reduction in overvoltage trip point is desired. The resistance required from a given overvoltage nominal set point is derived from the following equation: 4.3 - 2 Vov-set Rov-adj = ------------------------------------ k Vov-set - 4.3 Where: Rov-adj is the value of an external resistor between the OVTRIM pin and SENSE(-) pin. Vov-set is the nominal adjusted set point of the overvoltage shutdown threshold. SYNC OUT Pin This pin contains a clock signal referenced to the VI(-) pin. The frequency of this signal will equal either the module's internal clock frequency or the frequency established by an external clock applied to the SYNC IN pin. When synchronizing several modules together, the modules can be connected in a daisy-chain fashion where the SYNC OUT pin of one module is connected to the SYNC IN pin of another module. Each module in the chain will synchronize to the frequency of the first module in the chain. To avoid loading effects, ensure that the SYNC OUT pin of any one module is connected to the SYNC IN pin of only one module. Any number of modules can be synchronized in this daisy-chain fashion. Forced Load Sharing (Parallel Operation) For either redundant operation or additional power requirements, the power module can be configured for parallel operation with forced load sharing (see Figure 26). For a typical redundant configuration, Schottky diodes or an equivalent should be used to protect against short-circuit conditions. Because of the remote sense, the forward-voltage drops across the Schottky diodes do not affect the set point of the voltage applied to the load. For additional power requirements, where multiple units are used to develop combined power in excess of the rated maximum, the Schottky diodes are not needed. An internal anti-rollback circuit prevents either output voltage from falling more than 1 V below the other during light load operation. Good layout techniques should be observed for noise immunity. To implement forced load sharing, the following connections must be made: s Module Synchronization Any module can be synchronized to any other module or to an external clock using the SYNC IN or SYNC OUT pins. The modules are not designed to operate in a master/slave configuration; that is, if one module fails, the other modules will continue to operate. SYNC IN Pin This pin can be connected either to an external clock or directly to the SYNC OUT pin of another JF-Series or FW300F1 module. If an external clock signal is applied to the SYNC IN pin, the signal must be a 500 kHz (50 kHz) square wave with a 4 Vp-p amplitude. Operation outside this frequency band will detrimentally affect the performance of the module and must be avoided. If the SYNC IN pin is connected to the SYNC OUT pin of another module, the connection should be as direct as possible, and the VI(-) pins of the modules must be shorted together. Unused SYNC IN pins should be tied to VI(-). If the SYNC IN pin is not used, the module will operate from its own internal clock. The parallel pins of all units must be connected together. The paths of these connections should be as direct as possible. All remote-sense pins must be connected to the power bus at the same point. That is, connect all remote-sense (+) pins to the (+) side of the power bus at the same point, and connect all remote-sense (-) pins to the (-) side of the power bus at the same point. Close proximity and directness are necessary for good noise immunity. Add a 1000 pF capacitor across the PARALLEL pin and SENSE(-) pin of each module. Locate the capacitor as close to the module as possible. s s 14 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Power Good Signal The power good signal (PWRGOOD pin) is an opencollector, secondary-referenced pin that is pulled low when all five of the following conditions are met: 1. The sensed output voltage is greater than half the rated nominal output voltage. 2. The overvoltage shutdown latch is not set. 3. The thermal shutdown latch is not set. 4. The unit is not in current limit. 5. Secondary internal bias is present. There is one situation where the power good signal can be low even though the module has failed. This can occur when the module is paralleled with other modules for additional output power (i.e., the output ORing diodes would not be used). If one module power train stops delivering power (fails), the other paralleled module(s) would provide a voltage at the output pin of the failed module. The failed module would then not detect that its output power is not being delivered. However, in this situation, the current monitor pins of the paralleled modules would indicate that current is not being delivered from one module and that module had failed. For redundant applications, the ORing diodes would keep the other module voltages from being applied to the failed module output and the power good signal would indicate a failure. Feature Descriptions (continued) Forced Load Sharing (Parallel Operation) (continued) PARALLEL SENSE(+) SENSE(-) CASE VO(-) ON/OFF VI(+) VO(+) VI(-) PARALLEL SENSE(+) SENSE(-) CASE VO(-) ON/OFF VI(+) VO(+) VI(-) 8-581 (C).c Figure 26. Wiring Configuration for Redundant Parallel Operation Output Current Monitor The current monitor (CURMON) pin produces a dc voltage proportional to the dc output current of the module. The voltage is referenced to the secondary SENSE(-) pin and is typically 4.10 V at rated output current. For paralleling with FW300x modules, consult the factory for the V/A ratio. The output impedance of this pin is approximately 20 k3/4, so customer detection circuitry must have a high-impedance input. Thermal Warning Signal The thermal warning (TEMPWARN) pin is a secondary-referenced, open-collector output that shorts to SENSE(-) a few degrees before the module goes into thermal shutdown. When the module temperature cools, the thermal warning pin will open, but the unit will remain latched off until the input power or the primary or secondary referenced remote on/off is recycled for 1.0 second. Overtemperature Protection These modules feature an overtemperature protection circuit to safeguard against thermal damage. The circuit shuts down and latches off the module when the maximum case temperature is exceeded. The module can be restarted by cycling the dc input power for at least 1.0 second or by toggling the primary or secondary referenced remote on/off signal for at least 1.0 second. Tyco Electronics Corp. 15 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 Thermal Considerations Introduction The JFW-Series power modules operate in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the units. Heat-dissipating components inside the units are thermally coupled to the case. Heat is removed by conduction, convection, and radiation to the surrounding environment. Proper cooling can be verified by measuring the case temperature. Peak temperature (TC) occurs at the position indicated in Figure 27. 38.0 (1.50) MEASURE CASE TEMPERATURE HERE Note that the natural convection condition was measured at 0.05 m/s to 0.1 m/s (10 ft./min. to 20 ft./min.); however, systems in which this power module may be used typically generate a natural convection airflow rate of 0.3 m/s (60 ft./min.) due to other heat dissipating components in the system. The use of Figure 28 is shown in the following example. Example What is the minimum airflow necessary for a JFW150F operating at VI = 54 V, an output current of 20 A, and a maximum ambient temperature of 40 C? Solution Given: VI = 54 V IO = 20 A TA = 40 C Determine PD (Use Figure 32.): PD = 16W Determine airflow (v) (Use Figure 28.): v = 1.85 m/s (370 ft./min.) 35 4.0 m/s (800 ft./min.) 3.5 m/s (700 ft./min.) 3.0 m/s (600 ft./min.) 2.5 m/s(500 ft./min.) 2.0 m/s(400 ft./min.) 1.5 m/s (300 ft./min.) 1.0 m/s (200 ft./min.) 0.5 m/s (100 ft./min.) 7.6 (0.30) 8-1397 (C).a Note: Top view, measurements shown in millimeters and (inches). Pin locations are for reference only. POWER DISSIPATION, PD (W) 30 25 20 15 10 5 0 0 10 20 30 40 50 60 0.1 m/s (NAT. CONV.) (20 ft./min.) Figure 27. Case Temperature Measurement Location The temperature at this location should not exceed 100 C. The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table. Although the maximum case temperature of the power modules is 100 C, you can limit this temperature to a lower value for extremely high reliability. For additional information regarding this module, refer to the Thermal Management JC-, JFC-, JW-, and JFWSeries 50 W to 150 W Board-Mounted Power Modules Technical Note (TN97-008EPS). 70 80 90 100 LOCAL AMBIENT TEMPERATURE, T (C) A 8-1150 (C).a Figure 28. Forced Convection Power Derating with No Heat Sink; Either Orientation Heat Transfer Without Heat Sinks Increasing airflow over the module enhances the heat transfer via convection. Figure 28 shows the maximum power that can be dissipated by the module without exceeding the maximum case temperature versus local ambient temperature (TA) for natural convection through 4 m/s (800 ft./min.). 16 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Thermal Considerations (continued) POWER DISSIPATION, PD (W) Heat Transfer Without Heat Sinks (continued) 9 POWER DISSIPATION, PD (W) 8 7 VI = 75 V 6 5 4 3 2 0 1 2 3 4 5 6 7 8 9 10 OUTPUT CURRENT, IO (A) 8-1459 (C) VI = 54 V VI = 36 V 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 2 4 6 8 10 12 VI = 36 V VI = 54 V VI = 36 V 75 14 16 18 20 OUTPUT CURRENT, IO (A) 8-1461 (C) Figure 31. JFW100F Power Dissipation vs. Output Current at 25 C Figure 29. JFW050F Power Dissipation vs. Output Current at 25 C POWER DISSIPATION, PD (W) 30 25 20 15 10 5 0 0 5 10 15 20 25 30 OUTPUT CURRENT, IO (A) 8-1462 (C) 16 POWER DISSIPATION, PD (W) 14 12 10 8 6 4 2 0 0 2 4 6 8 10 12 14 OUTPUT CURRENT, IO (A) 8-1460 (C) VI = 36 V VI = 54 V VI = 36 V 75 VI = 36 V VI = 54 V VI = 36 V 75 Figure 32. JFW150F Power Dissipation vs. Output Current at 25 C Figure 30. JFW075F Power Dissipation vs. Output Current at 25 C Heat Transfer with Heat Sinks The power module has through-threaded, M3 x 0.5 mounting holes, which enable heat sinks or cold plates to attach to the module. The mounting torque must not exceed 0.56 N/m (5 in./lb.). For a screw attachment from the pin side, the recommended hole size on the customer's PWB around the mounting holes is 0.130 0.005 inches. If a larger hole is used, the mounting torque from the pin side must not exceed 0.25 N/m (2.2 in./lb.). Tyco Electronics Corp. 17 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 Thermal Considerations (continued) Heat Transfer with Heat Sinks (continued) Thermal derating with heat sinks is expressed by using the overall thermal resistance of the module. Total module thermal resistance (ca) is defined as the maximum case temperature rise (TC, max) divided by the module power dissipation (PD): TC, max ) ----------------------ca = --------------------- = ( TC - TA PD PD The location to measure case temperature (TC) is shown in Figure 27. Case-to-ambient thermal resistance vs. airflow for various heat sink configurations is shown in Figure 33. These curves were obtained by experimental testing of heat sinks, which are offered in the product catalog. These measured resistances are from heat transfer from the sides and bottom of the module as well as the top side with the attached heat sink; therefore, the case-to-ambient thermal resistances shown are generally lower than the resistance of the heat sink by itself. The module used to collect the data in Figure 33 had a thermal-conductive dry pad between the case and the heat sink to minimize contact resistance. The use of Figure 33 is shown in the following example. 8 CASE-TO-AMBIENT THERMAL RESISTANCE, CA (C/W) 7 6 5 4 3 2 1 0 0 0.5 (100) 1.0 (200) 1.5 (300) 2.0 (400) 2.5 (500) 3.0 (600) 1 1/2 IN. HEAT SINK 1 IN. HEAT SINK 1/2 IN. HEAT SINK 1/4 IN. HEAT SINK NO HEAT SINK Example If an 85 C case temperature is desired, what is the minimum airflow necessary? Assume the JFW150F module is operating at VI = 54 V and an output current of 20 A, maximum ambient air temperature of 40 C, and heat sink of 1/2 inch. Solution Given: VI = 54 V IO = 20 A TA = 40 C TC = 85 C Heat sink = 1/2 inch Determine PD by using Figure 32: PD = 16 W Then solve the following equation: ( TC - TA ) ca = -----------------------PD ) ----------------------ca = ( 85 - 40 16 ca = 2.8 C/W Use Figure 33 to determine air velocity for the 1/2 inch heat sink. The minimum airflow necessary for the JFW150F module is about 1.2 m/s (240 ft./min.). Custom Heat Sinks A more detailed model can be used to determine the required thermal resistance of a heat sink to provide necessary cooling. The total module resistance can be separated into a resistance from case-to-sink (cs) and sink-to-ambient (sa) shown below (Figure 34). TC PD cs sa 8-1304 (C) TS TA AIR VELOCITY, IN m/s (ft./min.) 8-1153 (C).a Figure 33. Case-to-Ambient Thermal Resistance Curves; Either Orientation Figure 34. Resistance from Case-to-Sink and Sink-to-Ambient 18 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Thermal Considerations (continued) Custom Heat Sinks (continued) For a managed interface using thermal grease or foils, a value of cs = 0.1 C/W to 0.3 C/W is typical. The solution for heat sink resistance is: ( TC - TA ) sa = ----------------------- - cs PD This equation assumes that all dissipated power must be shed by the heat sink. Depending on the userdefined application environment, a more accurate model, including heat transfer from the sides and bottom of the module, can be used. This equation provides a conservative estimate for such instances. EMC Considerations For assistance with designing for EMC compliance, please refer to the FLTR100V10 data sheet (DS98-152EPS). Layout Considerations Copper paths must not be routed beneath the power module mounting inserts. For additional layout guidelines, refer to the FLTR100V10 data sheet (DS98-152EPS). Tyco Electronics Corp. 19 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 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 57.9 (2.28) MAX 61.0 (2.40) MAX Side View SIDE LABEL* 12.7 0.5 (0.500 0.020) 5.1 (0.20) MIN 5.3 (0.21) MIN 1.02 (0.040) DIA SOLDER-PLATED BRASS, 6 PLACES 0.64 (0.025) SQUARE SOLDER-PLATED BRONZE, 10 PLACE 2.06 (0.081) DIA SOLDER-PLATED BRASS, 2 PLACES (-OUTPUT AND +OUTPUT) Bottom View 2.54 (0.100) 7.62 (0.300) MOUNTING INSERTS M3 x 0.5 THROUGH, 4 PLACES VI(-) 10.16 (0.400) CASE 5.08 (0.200) SYNC OUT 5.08 (0.200) SYNC IN 5.08 (0.200) ON/OFF 10.16 (0.400) VI(+) SENSE(-) TEMPWARN OCTRIM PWRGOOD PARALLEL SENSE(+) VoTRIM OVTRIM CURMON S-ON/OFF 5.1 (0.20) 12.7 (0.50) 50.8 (2.00) VO(-) 35.56 (1.400) 12.70 (0.500) VO(+) 4.8 (0.19) 48.3 (1.90) 8-1397 (C).b * Side label includes Tyco name, product designation, safety agency markings, input/output voltage and current ratings, and bar code. Note: The control pins are on a 2.54 mm (0.100 in.) grid. 20 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Recommended Hole Pattern Component-side footprint. Dimensions are in millimeters and (inches). PARALLEL PWRGOOD OCTRIM TEMPWARN SENSE(-) 57.9 (2.28) MAX 4.8 (0.19) 48.3 (1.90) DETAIL A S-ON/OFF CURMON OVTRIM VOTRIM SENSE(+) 2.54 (0.100) VI(+) 35.56 (1.400) VO(+) 5.08 (0.200) 5.08 (0.200) ON/OFF SYNC IN SYNC OUT CASE 2.54 (0.100) 35.56 (1.400) 61.0 (2.40) MAX 50.8 (2.00) 5.08 (0.200) 10.16 (0.400) 48.26 (1.900) VI(-) VO(-) 12.7 (0.50) 5.1 (0.20) MOUNTING INSERTS 2.54 (0.100) 7.62 (0.300) MODULE OUTLINE 8-1397 (C).b Tyco Electronics Corp. 21 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 Ordering Information Table 5. Device Codes Input Voltage 48 V 48 V 48 V 48 V 48 V 48 V 48 V 48 V Output Voltage 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V Output Power 33 W 50 W 66 W 99 W 33 W 50 W 66 W 99 W Remote On/Off Logic Negative Negative Negative Negative Positive Positive Positive Positive Device Code JFW050F1 JFW075F1 JFW100F1 JFW150F1 JFW050F JFW075F JFW100F JFW150F Comcode 108161837 108299017 108298993 108161761 TBD TBD TBD TBD Optional features can be ordered using the suffixes shown in Table 6. The suffixes follow the last letter of the device code and are placed in descending order. For example, the device codes for a JFW150F module with the following options are shown below: Positive logic Negative logic Negative logic and delayed current-limit shutdown Table 6. Device Options Option Delayed current-limit shutdown Negative remote on/off logic Positive remote on/off logic Suffix 3 1 -- JFW150F JFW150F1 JFW150F31 22 Tyco Electronics Corp. Data Sheet September 1999 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Ordering Information (continued) Table 7. Device Accessories Accessory 1/4 in. transverse kit (heat sink, thermal pad, and screws) 1/4 in. longitudinal kit (heat sink, thermal pad, and screws) 1/2 in. transverse kit (heat sink, thermal pad, and screws) 1/2 in. longitudinal kit (heat sink, thermal pad, and screws) 1 in. transverse kit (heat sink, thermal pad, and screws) 1 in. longitudinal kit (heat sink, thermal pad, and screws) 1 1/2 in. transverse kit (heat sink, thermal pad, and screws) Dimensions are in millimeters and (inches). Comcode 407243989 407243997 407244706 407244714 407244722 407244730 407244748 1/4 IN. 1/4 IN. 1/2 IN. 1/2 IN. 1 IN. 61 (2.4) 1 IN. 57.9 (2.28) 1 1/2 IN. 57.9 (2.28) 1 1/2 IN. 61 (2.4) 8-2832 (C) 8-2833 (C) Figure 35. Longitudinal Heat Sink Figure 36. Transverse Heat Sink Tyco Electronics Corp. 23 JFW050F, JFW075F, JFW100F, JFW150F Power Modules: dc-dc Converters; 36 to 75 Vdc Input; 3.3 Vdc Output; 33 W to 99 W Data Sheet September 1999 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) http://power.tycoelectronics.com 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 Corporation, Harrisburg, PA. All International Rights Reserved. Printed in U.S.A. September 1999 DS98-383EPS (Replaces DS98-281EPS) Printed on Recycled Paper |
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