Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Features The JW6 Triple-Output-Series Power Modules use advanced, surface-mount technology and deliver high-quality, efficient, and compact dc-dc conversion. pplications n n Distributed power architectures Communications equipment Options n n Choice of remote on/off logic configuration Heat sinks available for extended operation Description n Small size: 61. mm x 57.9 mm x 13.3 mm (.4 in. x.8 in. x.5 in.) n High power density n High efficiency: 86% typical n Low output noise n Constant frequency n Wide operating temperature range n Metal baseplate n :1 input voltage range n Overvoltage and overcurrent protection n Overtemperature protection n Remote on/off n djustable output voltage n ISO* 91 Certified manufacturing facilities n UL 195 Recognized, CS C. No. 95-95 Certified, and VDE 85 (EN695, IEC95) Licensed n CE mark meets 73/3/EEC and 93/68/EEC directives * ISO is a registered trademark of the International Organization for Standardization. UL is a registered trademark of Underwriters Laboratories, Inc. CS is a registered trademark of Canadian Standards ssn. This product is intended for integration into end-use equipment. ll the required procedures for CE marking of end-use equipment should be followed. (The CE mark is placed on selected products.) The JW6 Triple-Output-Series Power Modules are dc-dc converters that operate over an input voltage range of 36 to 75 and provide three dc outputs. The outputs are fully isolated from the inputs, allowing versatile grounding connections. Built-in shielding provides improved EMI performance. The modules have a maximum power rating of 6 W at a typical full-load efficiency of 86%. The total output power of the JW6 Triple-Output-Series Power Modules is limited to 6 W. The main output () is tightly regulated and designed to deliver up to 45 W. The auxiliary outputs (VO and VO3) are cross-regulated and can provide a total of 58 W with the main output loaded at its minimum of W. The modules have a metal baseplate for excellent thermal performance in a small package. Threaded-through holes are provided to allow easy mounting or addition of a heat sink for high-temperature applications. The standard feature set includes output trim and remote on/off for convenient flexibility in distributed power applications.
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet bsolute 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. Input Voltage: Continuous Transient (1 ms) Parameter Symbol Min Max Unit VI VI, trans I/O Isolation Voltage 15 Operating Baseplate Temperature TC 4 1 C Storage Temperature Tstg 55 15 C 8 1 V 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 Maximum Input Current (VI = V to 75 V) II, max 3. Maximum Input Current (VI = 36 V to 75 V) II, max 3. Inrush Transient Energy (i t = Wfuse/Rfuse; J/¾ = s) Input Reflected-ripple Current, Peak-to-peak (5 Hz to MHz, 1 µh source impedance; see Figure 13.) Wfuse 4. mj II 5 mp-p Input Ripple Rejection (1 Hz) 57 db Fusing Considerations CUTION: This power module is not internally fused. n 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, dc fuse with a maximum rating of (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. Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Electrical Specifications (continued) Table. Output Specifications Parameter Device Symbol Min Typ Max Unit Output Voltage Set Point (VI = 48 V; TC = 5 C, IO1 = 5. ; JW6BK,set VO,set 4.9 11.7 5. 1.5 5.1 1.35 for JW6BK, IO = IO3 = 1.45 ; VO3,set 11.7 1.5 1.35 for JW6CL, IO = IO3 = 1.1 ) JW6CL,set 4.9 5. 5.1 VO,set VO3,set 15.3 15.5 15.6 15.6 15.9 15.9 Output Voltage with Typical Loads (Over all operating input voltage and temperature conditions until end of life with resistive loads greater than the following minimums: IO1 >. ; IO & IO3 > 1. ) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life; see Figures 5 and Figures 91.) Output Regulation: Line (VI = 36 V to 75 V) Load (IO1 = 1.67 to 5. ; for JW6BK, IO = IO3 =.48 to 1.45 ; for JW6CL, IO = IO3 =.37 to 1.1 ) JW6BK JW6CL JW6BK JW6CL ll JW6BK JW6CL ll JW6BK JW6CL VO VO3 VO VO3 VO VO3 VO VO3 VO, VO3 VO, VO3 VO, VO3 VO, VO3 4.83 11.5 11.5 4.83 14.6 14.6 4.83 1.55 1.45 4.83 14. 13.9.1.5.35...4.1.5.3.. 1.4 5.17 1.85 1.85 5.17 16.6 16.6 5.17 13.65 13.65 5.17 17.5 17.5.1.6.3.1..5 %VO %VO %VO %VO %VO %VO Temperature (TC = 4 C to +1 C) Output Ripple and Noise Voltage (5 Hz to MHz; see Figure 14.): RMS Peak-to-peak Total External Load Capacitance Referred to Output 1 ll JW6BK JW6CL JW6BK JW6CL JW6BK JW6CL VO, VO3 VO, VO3 VO VO3 VO VO3 VO VO3 VO VO3 15 3 5 35 3 3 5 4 8 1 9 1 16 1 mv mv mv mvrms mvrms mvrms mvrms mvrms mvrms mvp-p mvp-p mvp-p mvp-p mvp-p mvp-p ll * µf * Consult your sales representative or the factory. Lineage Power 3
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet Electrical Specifications (continued) Table. Output Specifications (continued) Parameter Device Symbol Min Typ Max Unit JW6BK JW6CL IO1 IO, IO3 IO1 IO, IO3.5.3.5. 9. 3. 9.. Output Currents (t IO < IO, min, the modules may exceed output ripple and output and 3 voltage specifications. Operation is not recommended at IO1 < m or IO < 1 m due to possible control malfunction. No load is necessary on output 3, but at no load, its voltage may rise to the output overvoltage clamp specified on page 7.) Output Current-limit Inception: Typical (VI = 48 V, TC = 4 C): For JW6BK: IO1 = 3.33, IO = IO3 =.97 For JW6CL: IO1 = 3.33, IO = IO3 =.75 Worst Case (minimum loads on other outputs) Output Short-circuit Current (foldback current limit; output voltage =.5 V) JW6BK JW6CL JW6BK JW6CL JW6BK JW6CL IO1 IO, IO3 IO1 IO, IO3 IO1 IO, IO3 IO1 IO, IO3 IO1 IO, IO3 IO1 IO, IO3 14.* 4.* 14.* 3.* 1.5 5. 1.5 3.9 5.5 4.5 6. 3. 18.* 8.5* 18.* 7.* 7.5 6.5 7.5 4.5 dc dc dc dc * These are manufacturing test limits. In some situations, results may differ. 4 Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Electrical Specifications (continued) Table. Output Specifications (continued) Parameter Device Symbol Min Typ Max Unit Efficiency (VI = 48 V; TC = 5 C, IO1 = 5., IO = IO3 = 1.45 for JW6BK, 1.1 for JW6CL) JW6BK JW6CL Switching Frequency ll 3 khz Dynamic Response (ýio/ýt = 1 /µs, VI = 48 V, TC = 5 C, load capacitance per Figure 14): for a Step Load Change: IO1 Step from 3. to 6. for JW6BK, IO = IO3 =.6 ; for JW6CL, IO = IO3 =.48 : Peak Deviation Settling Time (VO < 1% of peak deviation) IO1 Step from.5 to 9., Other Loads at Their Minimum: Peak Deviation Settling Time (VO < 1% of peak deviation) VO for a Step Load Change: for JW6BK, IO Step from.6 to 1.87, IO1 = 3., IO3 =.6 ; for JW6CL, IO Step from.48 to 1.44, IO1 = 3., IO3 =.48 : Peak Deviation JW6BK JW6CL JW6BK JW6CL JW6BK JW6CL JW6BK JW6CL JW6BK JW6CL η η 86 87 4. 4.4 68 85 11.6 13. 7 8 4.5 4.5 % % %VO, set %VO, set µs µs %VO, set %VO, set µs µs Settling Time (VO < 1% of peak deviation) JW6BK JW6CL 58 78 %VO, set %VO, set µs µs Lineage Power 5
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet Electrical Specifications (continued) Table 3. Isolation Specifications Isolation Capacitance: Baseplate to I/O Pins Input to Output Pins Isolation Resistance: Baseplate to I/O Pins Input to Output Pins Parameter Min Typ Max Unit 1 1 11 3 pf pf M¾ M¾ General Specifications Parameter Min Typ Max Unit Calculated MTBF (IO = 8% of IO, max; TC = 4 C) 5,5, hours Failure Rate in the First Years of Operation* 5 ppm Useful Life at 55 C mbient, 8% Full Load* 15 years Weight 51 (1.8) 55 () g (oz.) * Based on other similar products. 6 Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for further information. Parameter Device Symbol Min Typ Max Unit Remote On/Off Signal Interface (VI = V to 75 V; open collector or equivalent compatible; signal referenced to VI( ) terminal; see Figure 16 and Feature Descriptions.): JW6xxx Preferred Logic: Logic LowModule Off Logic HighModule On JW6xxx1 Optional Logic: Logic LowModule On Logic HighModule Off Logic Low (ON/OFF pin tied to VI( )): t Von/off =. V Logic High (ON/OFF pin open): t Ion/off =. µ Leakage Current Turn-on Time (See Figure 8.) (IO = 8% of IO, max; VO within ±1% of steady state) Output Voltage Overshoot Output Voltage djustment (See Feature Descriptions.): Output Voltage Set-point djustment Range (trim) Set-point ccuracy with Trim ll Von/off Ion/off Von/off Ion/off 7 1. 1. 15 5 6* 5 11 V m V µ ms % %VO, nom ll.5 3. % Output Overvoltage Shutdown for ll 5.55* 6. 6.15* V Output Overvoltage Clamp for VO and VO3 JW6BK VO, VO3 17.* V JW6CL VO, VO3.* V Overtemperature Threshold ll TC 15 C * These are manufacturing test limits. In some situations, results may differ. Cleanliness Requirements The open frame (no case or potting) power module will meet requirements per J-STD-1B. These requirements state that solder balls must be attached and their size should not compromise minimum electrical spacing of the power module. The cleanliness designator of the open frame power module is C (per J specification). 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 pplication Note (P97-1EPS). Lineage Power 7
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet Characteristic Curves The following figures provide typical characteristics for the JW6BK and JW6CL power modules. The figures are identical for both on/off configurations. INPUT CURRENT, II ().5. 1.5 1..5 FULL LOD MID LOD LIGHT LOD 1 3 4 5 6 7 8 OUTPUT VOLTGE, VO (V) 1 11 1 9 8 7 6 5 4 3 1 1 36 VIN 48 VIN 75 VIN 3 4 5 6 7 8 INPUT VOLTGE, VI (V) 8-151 (C) Figure 1. Typical JW6xxx Input Characteristics at Room Temperature, IO = Full Load OUTPUT CURRENT, IO () 8-153 (C) Figure 3. Typical JW6BK VO Characteristics at Room Temperature, VIN = 48 V, IO1 =.5, IO3 =.3 OUTPUT VOLTGE, (V) 5. 4.5 4. 3.5 3..5. 1.5 1..5. 4 6 36 VIN 48 VIN 75 VIN 8 1 1 14 16 18 OUTPUT CURRENT, IO1 () 8-159 (C) Figure. Typical JW6BK Characteristics at Room Temperature, VIN = 48 V, IO = IO3 =.3 OUTPUT VOLTGE, (V) 6 5 4 3 1 4 6 8 1 1 14 16 18 OUTPUT CURRENT, IO1 () 36 VIN 48 VIN 75 VIN 8-1531 (C) Figure 4. Typical JW6CL Characteristics at Room Temperature, VIN = 48 V, IO = IO3 =. 8 Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Characteristic Curves (continued) OUTPUT VOLTGE, VO (V) 16 14 1 1 8 6 4 1 OUTPUT CURRENT, IO () 4 5 6 8-153 (C) Figure 5. Typical JW6CL VO Characteristics at Room Temperature, VIN = 48 V, IO1 =.5, IO3 =. 3 36 VIN 48 VIN 75 VIN EFFICIENCY, η (%) 89 88 87 86 85 84 83 8 81 8 79 15 LOW LINE 36 V NOM LINE 54 V HIGH LINE 75 V 5 35 45 55 65 75 85 95 PERCENT OF FULL LOD 8-1514 (C) Figure 7. Typical JW6CL Converter Efficiency vs. Output Current at Room Temperature EFFICIENCY, η (%) 89 88 87 86 85 84 83 8 81 8 79 15 LOW LINE 36 V NOM LINE 54 V HIGH LINE 75 V 5 35 45 55 65 75 85 95 PERCENT OF FULL LOD 8-1513 (C) Figure 6. Typical JW6BK Converter Efficiency vs. Output Current at Room Temperature REMOTE ON/OFF VOLTGE, VON/OFF (V) ( V/div) OUTPUT VOLTGE, (V) (1 V/div) TIME, t (1 ms/div) 8-1515 (C) Figure 8. Typical Start-Up from Remote On/Off JW6xxx; Full Load Lineage Power 9
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet Characteristic Curves (continued) VO (V) 13. 1.8 1.6 1.4 1. 1. 11.8 11.6 11.4 11. 11. 1 IO =.3 IO = 1. IO =. IO = 3. IO = 4. 3 4 5 6 7 8 9 1 VO (V) 16.6 16.4 16. 16. 15.8 15.6 15.4 15. 15. 14.8 14.6 1 IO =. IO = 1. IO =. IO = 3. 3 4 5 6 7 8 9 1 Figure 9. IO1 () 8-1516 (C) Typical JW6BK VO Load Regulation for IO3, min IO3 IO3, max IO1 () 8-1533 (C) Figure 11. Typical JW6CL VO Load Regulation for IO3, min IO3 IO3, max VO3 (V) 13. 1.8 1.6 1.4 1. 1. 11.8 11.6 11.4 11. 11. 1 IO3 =.3 IO3 = 1. IO3 =. IO3 = 3. IO3 = 4. 3 4 5 6 7 8 9 1 VO3 (V) 16.6 16.4 16. 16. 15.8 15.6 15.4 15. 15. 14.8 14.6 1 IO3 =. IO3 = 1. IO3 =. IO3 = 3. 3 4 5 6 7 8 9 1 IO1 () 8-1517 (C) Figure 1. Typical JW6BK VO3 Load Regulation for IO, min IO IO, max IO1 () 8-1534 (C) Figure 1. Typical JW6CL VO3 Load Regulation for IO, min IO IO, max 1 Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Test Configurations TO OSCILLOSCOPE LTEST 1 µh CURRENT PROBE VI(+) SUPPLY I I VI(+) VO(+) COM VO3( ) CONTCT ND DISTRIBUTION LOSSES I O I O3 LOD LOD3 BTTERY CS µf ESR <.1 Ω @ C, 1 khz 33 µf ESR <.7 Ω @ 1 khz CONTCT RESISTNCE VI( ) (+) I O1 LOD1 8-3 (C).l Note: Input reflected-ripple current is measured with a simulated source inductance (LTEST) of 1 µh. Capacitor CS offsets possible battery impedance. Current is measured at the input of the module. Figure 13. Input Reflected-Ripple Test Setup VI( ) 8-749 (C).e Note: ll measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. [ (+) VCOM]IO1 + [ VO(+) VCOM]IO [ VO3( ) VCOM]IO3 η = -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- x 1 [ VI(+) VI( ) ]II Figure 15. Triple-Output-Voltage and Efficiency Measurement Test Setup Design Considerations (+) COPPER STRIP Input Source Impedance COM VO(+) 47 µf µf µf 1 µf SCOPE µf 1 µf SCOPE R LOD1 SCOPE R LOD R LOD3 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 13, a 33 µf electrolytic capacitor (ESR <.7 Ω at 1 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. VO3( ) 8-811.b (C) Note: Use the specified tantalum (larger value) and ceramic capacitors across each output. Scope measurement should be made by using a BNC socket. Position the load between 51 mm and 76 mm ( in. and 3 in.) from the module. Figure 14. Output Noise Measurement Test Setup Lineage Power 11
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet 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., UL195, CS C. No. 95-95, and VDE 85 (EN695, IEC95). If the input source is non-selv (ELV or a hazardous voltage greater than 6 and less than or equal to 75 ), 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 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. nother 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 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 normal-blow fuse in the ungrounded lead. ssembly Considerations The power module is not encapsulated. It is designed to be mounted to the printed-wiring board (PWB) after the assembly cleaning process. 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 for an unlimited duration. t 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 exhibits foldback characteristics (output current decrease). The unit operates normally once the overload condition is removed. 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. 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 16). logic low is Von/off = V to 1. V. The maximum Ion/off during a logic low is 1 m. The switch should maintain a logic-low voltage while sinking 1 m. During a logic high, the maximum Von/off generated by the power module is 15 V. The maximum allowable leakage current of the switch is 5 µ. It is not recommended to drive the ON/OFF pin with an external source; however, if one is used, current into the pin must not exceed 1 m. 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. Ion/off ON/OFF + Von/off VI(+) (+) COM LOD VI( ) 8-7 (C).g Figure 16. Remote On/Off Implementation 1 Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Feature Descriptions (continued) Output Voltage Set-Point djustment (Trim) Output voltage trim allows the user to increase or decrease the output voltage set points of all outputs simultaneously. This is accomplished by connecting an external resistor between the TRIM pin and either the (+) or COM pins. The trim resistor should be positioned close to the module. If not using the trim feature, leave the TRIM pin open. With an external resistor between the TRIM and COM pins (Radj-down), the output voltage set points decrease (see Figure 17). The following equation, plotted in Figure 18, gives the required external-resistor value to lower the output voltages by a percentage ( %). Radj-down = 1, 1 --------- Ω % With an external resistor connected between the TRIM and (+) pins (Radj-up), the output voltage set points increase (see Figure 19). The following equation, plotted in Figure, gives the required external-resistor value to raise the output voltages by a percentage ( %). Radj-up = 1,, nom 1 --------------------- 1 1.5 --------- + 1 1 Ω % The voltage between the (+) and COM terminals must not exceed the minimum output overvoltage shutdown voltage as indicated in the Feature Specifications table. 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. 8-748 (C).d Figure 17. Circuit Configuration to Decrease Output Voltage RESISTNCE BETWEEN TRIM ND COM PINS (Ω) VI(+) ON/OFF VI( ) 1M 1k 1k (+) TRIM COM Radj-down Figure 18. Resistor Selection for Decreased Output Voltage VI(+) ON/OFF RLOD 4 6 8 1 1 14 16 18 4 6 8 3 PERCENT DECRESE FROM NOMINL VOUT ( %) (+) TRIM Radj-up RLOD 8-1536 (C) VI( ) COM 8-715 (C).f Figure 19. Circuit Configuration to Increase Output Voltage Lineage Power 13
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet Feature Descriptions (continued) Output Voltage Set-Point djustment (Trim) (continued) RESISTNCE BETWEEN TRIM ND PINS (Ω) 1M 1M 1k 1 3 4 5 6 7 8 9 1 PERCENT INCRESE FROM NOMINL VOUT ( %) 8-1535 (C) Figure. Resistor Selection for Increased Output Voltage Thermal Considerations Introduction 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-dissipating components inside the unit are thermally coupled to the metal baseplate. Heat is removed by conduction, convection, and radiation to the surrounding environment. Proper cooling can be verified by measuring the metal baseplate temperature. Peak temperature (TC) occurs at the position indicated in Figure 1. 3.5 (1.) 8.9 (1.14) VI(+) VI( ) Vo(+) TRIM Vo1(+) MESURE BSEPLTE TEMPERTURE HERE Output Overvoltage Protection ON/OFF COM Vo3( ) The output overvoltage clamp 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 attempt to restart periodically. Overtemperature Protection To provide protection in a fault condition, the unit is equipped with a temperature limiting circuit. This circuit will not engage unless the unit is operated above the absolute maximum temperature limit. When active, the overtemperature circuit lowers all output voltages sufficiently to prevent exceeding the overtemperature threshold. Recovery from the temperature limit is automatic after the unit cools below the overtemperature threshold. Note: Top view, pin locations are for reference only. Measurements shown in millimeters and (inches). Figure 1. Case Temperature Measurement Location 8-716 (C).g The temperature at this location should not exceed 1 C. The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table. lthough the maximum case temperature of the power modules is 1 C, you can limit this temperature to a lower value for extremely high reliability. Thermal performance of the module varies with the direction of airflow, assumed to be parallel to one edge of the baseplate. The best orientation has air entering the side with input pins, and the second best orientation has air entering the side closest to the ON/OFF and VO3( ) pins. 14 Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Thermal Considerations (continued) Introduction (continued) Total power dissipation for the modules at 48 V input is given by Figure 4 and Figure 5. Power dissipation at 36 V input is approximately.3 W higher than shown for 48 V input, and power dissipation at 75 V input is approximately.6 W higher than shown for 48 V input. Heat Transfer Without Heat Sinks Increasing airflow over the module enhances the heat transfer via convection. Figure shows the maximum power that can be dissipated by the module without exceeding the maximum baseplate temperature versus local ambient temperature (T), for natural convection through 4 m/s (8 ft./min.) in transverse (better) orientation, where the air flows parallel to the shorter side. Note that the natural convection condition was measured at.5 m/s to.1 m/s (1 ft./min. to ft./min.); however, systems in which these power modules may be used typically generate natural convection airflow rates of.3 m/s (6 ft./min.) due to other heat dissipating components in the system. The use of Figure and Figure 3 is shown in the following example. Example What is the minimum airflow necessary for a JW6BK operating at nominal line, an output current of 9 on 5 V, 1.5 on +1 V, and on 1 V, and a maximum ambient temperature of 5 C? Solution Given: VI = 54 V IO1 @5 V = 9 IO @ +1 V = 1.5 IO3 @ 1 V = T = 5 C Determine PD (Use Figure 4.): PD = 11.5 W Determine airflow 1 (v) (Use Figure.): v =.75 m/s (15 ft./min.) Determine airflow (v) (Use Figure 3.): POWER DISSIPTION, PD (W) 16. 14. 1. 1. v =.9 m/s (18 ft./min.) 8. 8 ft./min. 7 ft./min. 6. 6 ft./min. 5 ft./min. 4. 4 ft./min. 3 ft./min. ft./min.. 1 ft./min. ft./min. (nat. conv.). 1 3 4 5 6 7 8 9 1 LOCL MBIENT TEMPERTURE, T ( C) 8-159 (C) Figure. Forced Convection Power Derating with No Heat Sink; Transverse Orientation POWER DISSIPTION, PD (W) 16. 14. 1. 1. 8. 8 ft./min. 7 ft./min. 6. 6 ft./min. 5 ft./min. 4. 4 ft./min. 3 ft./min. ft./min.. 1 ft./min. ft./min. (nat. conv.). 1 3 4 5 6 7 8 9 1 LOCL MBIENT TEMPERTURE, T ( C) 8-151 (C) Figure 3. Forced Convection Power Derating with No Heat Sink; Longitudinal Orientation Lineage Power 15
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet Thermal Considerations (continued) Heat Transfer Without Heat Sinks (continued) POWER DISSIPTION, PD (W) 14 13 1 11 1 9 8 7 6 5 4 3 IO + IO3 = 6. IO + IO3 = 5. 1 IO + IO3 = 4. IO + IO3 =.6 3 4 5 6 7 8 9 1 IO1 () 8-1537 (C) Figure 4. JW6BK Power Dissipation vs. Output Current for VI = 48 V POWER DISSIPTION, PD (W) 14 13 1 11 1 9 8 7 6 5 4 3 IO + IO3 = 5. 1 IO + IO3 = 4. IO1 () Figure 5. JW6CL Power Dissipation vs. Output Current for VI = 48 V Heat Transfer with Heat Sinks IO + IO3 = 1.3 IO + IO3 = 3. IO + IO3 =.4 IO + IO3 = 3. IO + IO3 =. IO + IO3 =. IO + IO3 = 1. 3 4 5 6 7 8 9 1 8-1538 (C) The power modules have through-threaded, M3 x.5 mounting holes, which enable heat sinks or cold plates to attach to the module. The mounting torque must not exceed.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.13 ±.5 inches. If a larger hole is used, the mounting torque from the pin side must not exceed.5 N-m (. in.-lb.). Thermal derating with heat sinks is expressed by using the overall thermal resistance of the module. Total module thermal resistance (θca) is defined as the maximum case temperature rise ( TC, max) divided by the module power dissipation (PD): TC, max ( TC T) θca = --------------------- = ----------------------- PD PD The location to measure case temperature (TC) is shown in Figure 1. Case-to-ambient thermal resistance vs. airflow is shown, for various heat sink configurations and heights, in Figure 6. These curves were obtained by experimental testing of heat sinks, which are offered in the product catalog. RC ( C/W) 8. 7. 6. 5. 4. 3.. 1.. 1 3 4 5 VELOCITY (ft./min.) 1 1/ IN. HET SINK 1 IN. HET SINK 1/ IN. HET SINK 1/4 IN. HET SINK NO HET SINK 6 8-1511 (C) Figure 6. Case-to-mbient Thermal Resistance Curves; Either Orientation 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 6 had a thermal-conductive dry pad between the case and the heat sink to minimize contact resistance. The use of Figure 6 is shown in the following example. 16 Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Thermal Considerations (continued) Heat Transfer with Heat Sinks (continued) Example If an 85 C case temperature is desired, what is the minimum airflow necessary? ssume the JW6BK module is operating at nominal line and an output current of 9 on 5 V, 1.5 on +1 V, and on 1 V, maximum ambient air temperature of 4 C, and a heat sink that is.5 inches. Solution Given: VI = 54 V IO1 @ 5 V = 9 IO @ +1 V = 1.5 IO3 @ 1 V = T = 4 C TC = 85 C Heat sink =.5 inch Determine PD by using Figure 4: PD = 11.5 W Then solve the following equation: θca θca θca = = = ( TC T) ----------------------- PD ( 85 4) ----------------------- 11.5 3.9 C/W Use Figure 6 to determine air velocity for the.5 inch heat sink. The minimum airflow necessary for the JW6BK module is.6 m/s (11 ft./min.). For a managed interface using thermal grease or foils, a value of θcs =.1 C/W to.3 C/W is typical. The solution for heat sink resistance is: θsa = ( TC T) PD ----------------------- θcs 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 FLTR1V1 data sheet (DS98-15EPS). Layout Considerations Copper paths must not be routed beneath the power module mounting inserts, which are conductive and connected together electrically. Furthermore, it is not recommended that any copper paths be routed underneath or near the power module because they are likely to pick up noise from the module. For improved EMI performance, follow the layout guidelines given in the filter module FLTR1V1 or FLTR1V data sheets (DS98-15EPS or DS98-153EPS). For best EMI performance, use either of these filter modules at the input of one or more power modules. Custom Heat Sinks 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 (θcs) and sink-to-ambient (θsa) shown below (Figure 7). PD TC TS T cs 8-134 (C) Figure 7. Resistance from Case-to-Sink and Sink-to-mbient sa Lineage Power 17
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet Outline Diagram Dimensions are in millimeters and (inches). Tolerances: x.x mm ±.5 mm (x.xx in. ±. in.) x.xx mm ±.5 mm (x.xxx in. ±.1 in.) Top View 57.9 (.8) MX 61. (.4) MX Side View 13.33 (.55) MX Bottom View 5.1 (.) MIN 1. (.4) DI SOLDER-PLTED BRSS, 8 PLCES MOUNTING INSERTS M3 x.5 THROUGH, 4 PLCES 17.78 (.7) ON/OFF VO3( ) COM 5.8 (.) 1.7 (.5) 5.8 (.) 17.78 (.7) VI( ) VI(+) 48.6 (1.9) (+) TRIM VO(+) 1.7 (.5) 5.8 (.) 1.7 (.5) 5.1 (.) 1.7 (.5) 4.8 (.19) 48.3 (1.9) 8-119 (C).d 18 Lineage Power
Data Sheet JW6 Triple-Output-Series Power Modules: dc-dc Converters: Recommended Hole Pattern Component-side footprint. Dimensions are in millimeters and (inches). 5.1 (.) 4.8 (.19) 1.7 (.5) 57.9 (.8) MX 48.3 (1.9) 61. (.4) MX 5.8 (.) 17.78 (.7) 17.78 (.7) VI(+) VI( ) ON/OFF 48.6 (1.9) VO(+) TRIM (+) COM VO3( ) 5.8 (.) 1.7 (.5) 1.7 (.5) 5.8 (.) MODULE OUTLINE 8-119 (C).d Ordering Information Table 4. Device Codes Input Voltage Output Voltage Output Power Remote On/Off Logic Device Code Comcode 36 V75 V +5 V, ±1 V 6 W positive JW6BK 178896 36 V75 V +5 V, ±15 V 6 W positive JW6CL 178831 36 V75 V +5 V, ±1 V 6 W negative JW6BK1 183714 36 V75 V +5 V, ±15 V 6 W negative JW6CL1 183718 Lineage Power 19
JW6 Triple-Output-Series Power Modules: dc-dc Converters: Data Sheet Ordering Information (continued) Table 5. Device ccessories ccessory Comcode 1/4 in. transverse kit (heat sink, thermal pad, and screws) 4743989 1/4 in. longitudinal kit (heat sink, thermal pad, and screws) 4743997 1/ in. transverse kit (heat sink, thermal pad, and screws) 474476 1/ in. longitudinal kit (heat sink, thermal pad, and screws) 4744714 1 in. transverse kit (heat sink, thermal pad, and screws) 47447 1 in. longitudinal kit (heat sink, thermal pad, and screws) 474473 1 1/ in. transverse kit (heat sink, thermal pad, and screws) 4744748 1 1/ in. longitudinal kit (heat sink, thermal pad, and screws) 4744755 Dimensions are in millimeters and (inches). 1/4 IN. 1/4 IN. 1/ IN. 1/ IN. 1 IN. 1 IN. 61 (.4) 57.9 (.8) 1 1/ IN. 1 1/ IN. 57.9 (.8) 61 (.4) D-c.cvs Figure 8. Longitudinal Heat Sink Figure 9. Transverse Heat Sink D-d.cvs sia-pacific Headquart ers Tel: +65 6416 483 World Wide Headquarters Lineage Power Corporation 3 Skyline Drive, Mesquite, TX 75149, US +1-8-56-7819 (Outside U.S..: +1-97 - 84-66) www.lineagepower.com e-m ail: techsupport1@linea gepower.com Europe, M iddle-east and fric a He adquarters Tel: +49 89 689 86 India Headquarters Tel: +91 8 8411633 Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. 8 Lineage Power Corporation, (Mesquite, Texas) ll International Rights Reserved. DS99-36EPS (Replaces DS99-361EPS)