Data Sheet November 2001 HW025 Dual Positive Output-Series Power Modules: dc-dc Converter: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25 W Features The HW025 Dual Positive Output-Series Power Modules use advanced, surface-mount technology and deliver high-quality, efficient, and compact dc-dc conversion. Applications Distributed power architectures Communications equipment Computer equipment Low profile Small size: 54.4 mm x 57.4 mm x 7.5 mm (2.14 in. x 2.26 in. x 0.29 in.) High efficiency: 85% typical Two tightly regulated outputs Flexible current allocation between outputs Fixed frequency Remote on/off Output voltage adjustment (trim) Output overcurrent protection Overtemperature protection Meets the voltage isolation requirements for ETSI 300-132-2 and complies with and is Licensed for Basic Insulation rating per EN60950 (-B option) Wide operating temperature range (-40 C to 100 C) Options Remote on/off logic choice (positive or negative) Surface Mount Basic Insulation UL* 60950 Recognized, CSA C22.2 No. 60950-00 Certified, and VDE 0805 (EN60950) Licensed CE mark meets 73/23/EEC and 93/68/EEC directives Description The HW025 Dual Positive Output-Series Power Modules are open frame dc-dc converters that operate over an input voltage range of 36 Vdc to 75 Vdc and provide two, independent, precisely regulated positive outputs. The modules have a maximum power rating of 25 W with a typical full-load efficiency of 85%. The circuit architecture allows power to be traded between the two outputs, while maintaining a high efficiency. * 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.) HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 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 Input Voltage: Continuous Transient (2ms) Operating Ambient Temperature (See Thermal Considerations section) Storage Temperature I/O Isolation Voltage Symbol Min Max Unit VI VI, trans TA -- -- -40 80 100 100 Vdc V C Tstg -- -55 -- 105 1500 C Vdc 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 and 2.) Inrush Transient Symbol VI II, max Min 36 -- Typ 48 -- Max 75 1.1 Unit Vdc A -- -- -- 1.0 A2s Input Reflected-ripple Current, Peak-to-peak (5 Hz to 20 MHz, 12 H source impedance; see Figure 15) Input Ripple Rejection (120 Hz) EMC, EN55022 (VI, nom, full load) II -- 4 -- mAp-p -- -- 54 -- See EMC Considerations section. dB 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 3 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. Data Sheet November 2001 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Electrical Specifications (continued) Table 2. Output Specifications Parameter Output Voltage Set Point (VI = 48 V; IO1 = IO2 = 2.5 A; TA = 25 C) Device HW025AF Symbol VO1, set VO2, set VO1, set VO2, set VO1 VO2 VO1 VO2 Min 4.92 3.25 3.25 2.46 4.78 3.16 3.16 2.39 Typ 5.00 3.30 3.30 2.50 -- -- -- -- Max 5.08 3.35 3.35 2.54 5.21 3.44 3.44 2.61 Unit Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc All All All -- -- -- -- -- -- 0.01 0.05 0.60 0.2 0.2 2.0 %VO %VO %VO All All All -- -- -- 70 -- -- -- -- -- -- -- 30 100 100* 100* mVrms mVp-p F F 4.0 4.0 5.0 9 9 Adc Adc Adc A A HW025FG Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life.) 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 Figures 9 and 16): RMS (5 Hz to 20 MHz bandwidth) Peak-to-peak (5 Hz to 20 MHz bandwidth) External Load Capacitance Output Current NOTE: The maximum combined output current must not exceed 5A. Output Current-limit Inception (VO = 90% of VO, nom) Output Short-circuit Current (VO = 250 mV) Efficiency for V01 = 5.0 V, V02 = 3.3 V (VI = 48 V, I01 = I02 = 2.5 A, Tref = 25 C) for V01 = 3.3 V, V02 = 2.5 V (VI = 48 V, I01 = I02 = 2.5 A, Tref = 25 C) Switching Frequency HW025AF HW025FG All All All HW025AF HW025FG IO, TOT IO, cli IO, cli -- -- 0 0 0.0 0.0 0.0 -- -- All IO, SL -- 1.0 -- Adc HW025AF 82 85 -- % HW025FG 80 83 -- % All -- -- 300 -- kHz CVO1, max CVO2, max IO1 IO2 * It is recommended that the output capacitance's are balanced, where possible. Consult your sales representative or the factory for higher capacitance. These are manufacturing test limits. In some situations, results may differ. Tyco Electronics Corp. 3 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 2001 Electrical Specifications (continued) Table 2. Output Specifications (continued) Parameter Dynamic Response (IO/t = 1 A/10 s, VI = 48 V, Tref = 25 C): Load Change from IO1 = 50% to 75% of IO1, max or IO1 = 50% to 25% of IO1, max; IO2 = 30% of IO2, max: Peak Deviation Settling Time (VO < 10% of peak deviation) Load Change from IO2 = 50% to 75% of IO2, max or IO2 = 50% to 25% of IO2, max; IO1 = 30% of IO1, max: Peak Deviation Settling Time (VO < 10% of peak deviation) Device Symbol Min Typ Max Unit All All -- -- -- -- 100 2000 -- -- mV s All All -- -- -- -- 100 2000 -- -- mV s Isolation Specifications Parameter Isolation Capacitance Isolation Resistance Min -- 10 Typ 0.2 -- Max -- -- Unit nF M Min Typ Max Unit -- 4,000,000 4,900,000 -- 23 (0.81) hours hours g (oz.) General Specifications Calculated MTBF HW025AF HW025FG Weight (IO Parameter = 80% of IO, max; TA = 20 C) 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). 4 Tyco Electronics Corp. Data Sheet November 2001 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Table 3. 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 18. and Feature Descriptions.): HW025 Preferred Negative Logic: Logic Low--Module On Logic High--Module Off HW025 Optional Positive 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 (IO1 & IO2 = 2.5A; VO1 and VO2 within 1% of steady state; see Figure 7/14.) Device Symbol Min Typ Max Unit -- -- Von/off Ion/off 0 -- -- -- 1.2 1.0 V mA -- -- -- Von/off Ion/off -- -- -- -- -- -- 15 15 50 -- V A ms Output Voltage Adjustment Range (trim), each output: HW025AF V01 V02 76 -- -- 105 105 %V %V Note: There are restrictions to the combinations of output voltage. See Output Voltage Adjustment Section. Output Overvoltage Protection (Note: Only on VO1) Overtemperature Protection HW025FG V01 V02 76 60 -- -- 105 105 %V %V HW025AF HW025FG All V01 V01 Tref 5.6 3.5 -- -- -- 120 7.0 4.0 -- V V C * A Minimum OFF Period of 1 sec is recommended. Tyco Electronics Corp. 5 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 2001 Characteristic Curves - AF The following figures provide typical characteristics for the power modules. The figures are identical for both on/off configurations. 90 0.9 IO1 = 4A, IO2 = 1A 0.8 IO1 = 1.5A, IO2 = 1.5A 85 80 IO1 = 0A, IO2 = 0A 0.7 EFFICIENCY, (%) INPUT CURRENT, I IN (A) 1.0 0.6 0.5 0.4 75 70 IO2 = 0A 65 IO2 = 1A 0.3 IO2 = 2A 60 IO2 = 3A 0.2 IO2 = 4A 55 0.1 50 0.0 0 10 20 30 40 50 60 70 0 80 1 2 3 4 OUTPUT CURRENT, I O1 (A) INPUT VOLTAGE, VIN (V) 8-3301 (F) Figure 3. Typical HW025AF Converter Efficiency vs. Output Current at VIN = 48V 90 90 85 85 80 80 EFFICIENCY,(%) EFFICIENCY, (%) Figure 1. Typical HW025AF Input Characteristics at Room Temperature 8-3302 (F) 75 70 IO2 = 0A 65 IO2 = 1A IO2 = 2A 60 75 70 IO2 = 0A 65 IO2 = 1A IO2 = 2A 60 IO2 = 3A IO2 = 3A IO2 = 4A 55 50 50 0 1 2 3 4 0 OUTPUT CURRENT, I O1 (A) 1 2 3 4 OUTPUT CURRENT, I O1 (A) 8-3289 (F) Figure 2. Typical HW025AF Converter Efficiency vs. Output Current at VIN = 36V 6 IO2 = 4A 55 8-3303 (F) Figure 4. Typical HW025AF Converter Efficiency vs. Output Current at VIN = 75V Tyco Electronics Corp. Data Sheet November 2001 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W REMOTE ON/OFF, V ON/OFF (V) Characteristic Curves - AF (continued) VO2 VO1 VO2 TIME, t (2ms / div) TIME, t (2s / div) 8-3304 (F) Figure 5. Typical HW025AF Output Ripple Voltage at Room Temperature, VIN = 48V and IO1 = IO2 = 2.5A OUTPUT CURRENT, I O (A) OUTPUT VOLTAGE, VO (V) (20mV / div) (1A / div) VON/OFF OUTPUT VOLTAGE, V O (V) (1V / div) OUTPUT VOLTAGE, VO (V) (50mV / div) VO1 8-3291 (F) Figure 7. Typical Start-Up from Remote On/Off HW025AF; IO1 = IO2 = 2.5A and VIN = 48V VO1 VO2 IO1 TIME, t (1ms / div) 8-3290 (F) Figure 6. Typical HW025AF Transient response to Step Load Change, IO1 = 50% to 25% to 50% of IO, max (0.1A / s ) at Room Temperature and 48V Input (Waveform Averaged to Eliminate Ripple Component.) Tyco Electronics Corp. 7 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 2001 Characteristic Curves - FG 90 0.7 IO1 = 4A, IO2 = 1A 0.6 85 80 IO1 = 0A, IO2 = 0A 0.5 EFFICIENCY, (%) INPUT CURRENT, IIN (A) IO1 = 1.5A, IO2 = 1.5A 0.4 0.3 75 70 IO2 = 0A 65 IO2 = 1A IO2 = 2A 0.2 60 IO2 = 3A IO2 = 4A 0.1 55 50 0.0 0 10 20 30 40 50 60 70 0 80 1 INPUT VOLTAGE, VIN (V) 2 3 4 OUTPUT CURRENT, I O1 (A) 8-3293 (F) 8-3292 (F) 90 90 85 85 80 80 75 70 IO2 = 0A 65 IO2 = 1A IO2 = 2A 60 75 70 IO2 = 0A 65 IO2 = 1A IO2 = 2A 60 IO2 = 3A IO2 = 3A IO2 = 4A IO2 = 4A 55 55 50 50 0 1 2 3 4 0 1 2 3 4 OUTPUT CURRENT, I O1 (A) OUTPUT CURRENT, I O1 (A) 8-3308 (F) Figure 9. Typical HW025FG Converter Efficiency vs. Output Current at VIN = 36V 8 Figure 10. Typical HW025FG Converter Efficiency vs. Output Current at VIN = 48V EFFICIENCY, (%) EFFICIENCY, (%) Figure 8. Typical HW025FG Input Characteristics at Room Temperature 8-3310 (F) Figure 11. Typical HW025FG Converter Efficiency vs. Output Current at VIN = 75V Tyco Electronics Corp. HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 2001 REMOTE ON/OFF, V ON/OFF (V) Characteristic Curves- FG (continued) OUTPUT VOLTAGE, V O (V) (50mV / div) VO1 OUTPUT VOLTAGE,O V(V) (1V / div) VO1 VO2 TIME, t (2s / div) Figure 12. Typical HW025FG Output Ripple Voltage at Room Temperature, VIN = 48V and IO1 = IO2 = 2.5A OUTPUT VOLTAGE, V O (V) (20mV / div) VO2 TIME, t (2ms / div) 8-3311 (F) OUTPUT CURRENT, I O (A) (1A / div) VON/OFF 8-3295 (F) Figure 14. Typical Start-Up from Remote On/Off HW025FG; IO1 = IO2 = 2.5A and VIN=48V VO1 V O2 IO1 TIME, t (1ms / div) 8-3401 (F) Figure 13. Typical HW025FG Transient response to Step Load Change, IO1 = 50% to 25% to 50% of IO, max (0.1A / s ) at Room Temperature and 48V Input (Waveform Averaged to Eliminate Ripple Component.) Tyco Electronics Corp. 9 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Test Configurations Design Considerations Input Source Impedance TO OSCILLOSCOPE CURRENT PROBE LTEST VI(+) 12 H CS 220 F ESR < 0.1 @ 20 C 100 kHz BATTERY VI(-) 8-2736 (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 15. Input Reflected-Ripple Test Setup COPPER STRIPS VO1 1.0 F 10 F SCOPE RLOAD1 COM 1.0 F 10 F RLOAD2 VO2 8-3299 (F) 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. Figure 16. Peak-to-Peak Output Noise Measurement Test Setup CONTACT AND DISTRIBUTION LOSSES VI(+) VO1 IO II SUPPLY LOAD COM LOAD VI(-) VO2 CONTACT RESISTANCE 8-3300 (F) 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. 2 [ V O J (+) - V COM ] I O J J = 1 = --------------------------------------------------------------------------- x 100 [ V I (+) - V I (-) ] I I Figure 17. Output Voltage and Efficiency Measurement Test Setup 10 Data Sheet November 2001 % 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 15, 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 (EN60950). If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75Vdc), for the module's output to be considered as meeting the requirements for 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 VIN pin and one VOUT 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 (combination of supply source and subject module), as required by the safety agencies, 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. The input to these units is to be provided with a maximum 3 A normal-blow fuse in the ungrounded lead. Tyco Electronics Corp. HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 2001 Feature Descriptions connecting an external resistor between the TRIM pin and either the VO(+) pin or the COM pin (see Figure 19). Overcurrent Protection To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit operates normally once the output current is brought back into its specified range. The average output current during hiccup is 10% IO, max. VIN (+) R trim-up ON/OFF Two remote on/off options are available. Positive logic turns the module on during a logic high voltage on the ON/OFF pin, and off during a logic low. Negative logic 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 (open collector or equivalent) to control the voltage (Von/off) between the ON/OFF terminal and the VIN(-) terminal (see Figure 18). Logic low is 0V Von/off 1.2V. The maximum Ion/off during a logic low is 1mA, the switch should be maintain a logic low level whilst sinking this current. During a logic high, the maximum Von/off generated by the module is 15V, and the maximum allowable leakage current at Von/off = 15V is 50A. If not using the remote on/off feature: R trim-down COM 8-2739 (F) Figure 19. Circuit Configuration to Trim Output Voltage Connecting an external resistor (Rtrim-down) between the TRIM pin of the desired output and the COM pin decreases the output voltage set point. To maintain set point accuracy, the trim resistor tolerance should be 0.1%. The relationship between the output voltage and the trim resistor value for a % reduction in output voltage is: 511 VO1 Rtrim-down = % 100 VO2 Rtrim-down = For negative logic, short the ON/OFF pin to VIN(-).. For positive logic, leave ON/OFF pin open. VO1 ON/OFF COM Von/off % - 6.11 k - 1.33 k See Figures 20 & 21. Connecting an external resistor (Rtrim-up) between the TRIM pin and the VO(+) pin of the desired output increases the output voltage set point. For trim-up: VIN(+) Ion/off LOAD VOTRIM VIN (-) Remote On/Off VO (+) VO2 VO1 Rtrim-up = VIN(-) 5.11VO1(100+%) 1.225 % 511 - % - 6.11 k - 1.33 k 8-2800 (F) Figure 18. Remote On/Off Implementation VO2 Rtrim-up = VO2(100+ %) 1.225 % 100 - % Output Voltage Set-Point Adjustment (Trim) Trimming allows the output voltage set point to be increased or decreased, this is accomplished by Tyco Electronics Corp. (VOx refers to the nominal output voltage, i.e. 5.0V for VO1 on an AF) See Figures 22 & 23. 11 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 2001 Feature Descriptions (continued) If not using the trim feature, leave the TRIM pin(s) unconnected. Note: The following voltage range restrictions apply. HW025AF For VO1 set to 5.0V - VO2 range is 2.5V to 3.3V HW025FG For VO1 set to 3.3V - VO2 range is 1.5V to 2.5V For VO1 set to 2.5V - VO2 range is 1.5V to 2.0V 1800 90 1600 ADJUSTMENT RESISTOR VALUE (k ) 100 ADJUSTMENT RESISTOR VALUE (k ) 80 70 60 50 40 30 20 1400 1200 1000 AF FG 800 600 400 200 10 0 0 5 10 15 20 25 1.0 1.5 % CHANGE IN OUTPUT VOLTAGE ( %) 2.0 2.5 3.0 3.5 4.0 4.5 8-2680 (F) Figure 20.Resistor Selection for Decreased Output Voltage for VO1 (AF and FG) 180 ADJUSTMENT RESISTOR VALUE (k ) 18 16 ADJUSTMENT RESISTOR VALUE (k ) 8-3093 (F) Figure 22. Resistor Selection for Increased Output Voltage on VO1 20 14 12 10 8 6 4 2 160 140 120 AF 100 FG 80 60 40 20 0 0 5 10 15 20 25 1.0 1.5 2.0 2.5 3.0 3.5 4.0 5.0 8-3094 (F) 8-2681 (F) Figure 21. Resistor Selection for Decreased Output Voltage for VO2 (AF and FG) 4.5 % CHANGE IN OUTPUT VOLTAGE ( %) % CHANGE IN OUTPUT VOLTAGE (%) 12 5.0 % CHANGE IN OUTPUT VOLTAGE ( %) Figure 23. Resistor Selection for Increased Output Voltage on VO1 Tyco Electronics Corp. Data Sheet November 2001 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Feature Descriptions (continued) 6 Output Overvoltage Protection The output overvoltage protection consists of circuitry that monitors VO1. If the voltage at the terminals exceeds the overvoltage threshold, then the module will shutdown and attempt to restart. Thermal Considerations Heat is removed by convection and radiation to the surrounding environment, sufficient cooling should be provided to ensure reliable operation of the unit. Considerations include ambient temperature, airflow, module power dissipation, and need for increased reliability. The thermal reference point, Tref, used in the specifications is shown in Figure 24 PIN 1 PIN 9 TOTAL OUTPUT CURRENT, I O, TOT (A) 5 4 3 2 3.0 m/s (600 ft./min.) 2.0 m/s (400 ft./min.) 1.0 m/s (200 ft./min.) 0.1 m/s (20 ft./min.) 1 0 0 10 20 30 40 50 60 70 80 90 100 LOCAL AMBIENT TEMPERATURE, T A ( o C) 8-3094 (F) Figure 25. Typical Maximum Total Output Current vs. Local Ambient Temperature Overtemperature Protection To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the overtemperature threshold is exceeded it will then wait for the unit to cool before attempting to restart. EMC Considerations PIN 2 PIN 8 VI (+) HW025 PIN 7 2x0.47 F 100V PIN 3 VO1 33 F 100V COM PIN 6 Q14 VI (-) PIN 5 VO2 3.3mH COMMONMODE CHOKE PIN 4 100nF CERAMIC Figure 26. Suggested Configuration for EN55022 Class B THERMOCOUPLE LOCATION Q14 (Tref) 8-3402 (F).a Figure 24. Tref Temperature Measurement Location For assistance with designing for EMC compliance, please refer to the FLTR100V10 data sheet (FDS01-043EPS). Layout Considerations Copper paths must not be routed beneath the power module mounting inserts. For additional layout guide-lines, refer to FLTR100V10 data sheet (FDS01-043EPS). Tyco Electronics Corp. 13 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 2001 Outline Diagram Dimensions are in millimeters and (inches) Tolerences: x.x mm 0.5 mm (x.xx in. 0.02 in.) Table 4. Pin Functions 14 Pin Function Pin Function 1 2 3 4 5 VI(+) REMOTE ON/OFF Not Connected VI(-) VO2TRIM 6 7 8 9 VO2 COM VO1 VO1TRIM Tyco Electronics Corp. HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 2001 Ordering Information For assistance in ordering, please contact your Tyco Electronics Power Systems' Account Manager or Field Application Engineer for pricing and availability. Feature Specifications Input Voltage Output Voltage Remote On/ Off Logic Negative 48V 5.0V 3.3V Positive Negative 48V 3.3V 2.5V Positive Tyco Electronics Corp. Basic Isolation Surface mount Device Code HW025AF1 HW025AF1-B HW025AF1-S HW025AF1-BS HW025AF HW025AF-B HW025AF-S HW025AF1-BS HW025FG1 HW025FG1-B HW025FG1-S HW025FG1-BS HW025FG HW025FG-B HW025FG-S HW025FG-BS Comcode 108776774 108573023 108869926 15 HW025 Dual Positive Output-Series Power Modules: dc-dc Converters: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W Data Sheet November 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 Tel: +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 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. NOV 2001 FDS01-027EPS (Replaces DS99-344EPS)