JBW030A1

Data Sheet March 27, 2008 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Features n Small size: 61.0 mm x 57.9 mm x 12.7 mm (2.40 in. x 2.28 in. x 0.50 in.) Low output noise Constant frequency Industry-standard pinout Metal case Case ground pin 2:1 input voltage range Overcurrent protection Output overvoltage protection Remote on/off Remote sense Adjustable output voltage: 80% to 110% of VO, nom UL* 60950 Recognized, CSA† C22.2 No. 6095000 Certified, and EN 60950 (VDE0805):2001-12 Licensed CE mark meets 73/23/EEC and 93/68/EEC directives‡ Within FCC Class A radiated limits n n n n n n The JBW030-Series Power Modules use advanced, surfacemount technology and deliver high-quality, compact, dc-dc conversion at an economical price. n n n n Applications n n n Distributed power architectures Communications equipment Workstations / Computer equipment n n n Options n n n n Heat sinks available for extended operation Choice of remote on/off logic configuration Short pins: 2.79 mm ± 0.25 mm (0.110 in. ± 0.010 in.) Short pins: 3.68 mm ± 0.25 mm (0.145 in. ± 0.010 in.) n Description The JBW030-Series Power Modules are dc-dc converters that operate over an input voltage range of 36 Vdc to 75 Vdc and provide precisely regulated outputs. The outputs are isolated from the inputs, allowing versatile polarity configurations and grounding connections. The modules have maximum power ratings of up to 30 W at a typical full-load efficiency of up to 82% (5 Vout). These power modules feature remote on/off, remote sense, and output voltage adjustment, (80% to 110% of the nominal output voltage). The modules are PC board-mountable, encapsulated in metal cases, and are rated to full load at 100 °C case temperature. No external filtering is required. * UL is a registered trademark of Underwriters Laboratories, Inc. † CSA is a registered trademark of Canadian Standards Association. ‡ 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.) JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Data Sheet March 27, 2008 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 Operating Case Temperature (See Thermal Considerations section.) Storage Temperature I/O Isolation Voltage: Continuous Transient Symbol VI TC Tstg — — Min — –40 –40 — — Max 80 100 110 500 1500 Unit Vdc °C °C Vdc 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 Figure 1.) Inrush Transient Input Reflected-ripple Current, Peak-to-peak (5 Hz to 20 MHz, 12 µH source impedance; TC = 25 °C; see Figure 11 and Design Considerations section.) 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 fast-acting fuse with a maximum rating of 5 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 II, max i 2t II Min 36 — — — Typ 48 — — 25 Max 75 1.6 0.2 — Unit Vdc A A2s mAp-p — — 50 — dB 2 Lineage Power Data Sheet March 27, 2008 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 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 13.) 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 12.): RMS Peak-to-peak (5 Hz to 20 MHz) Output Current (At IO < IO, min, the modules may exceed output ripple specifications; see Figures 2 and 3.) Output Current-limit Inception (VO = 90% of VO, nom) Output Short-circuit Current (VO = 250 mV) Efficiency (VI = 48 V; IO = IO, max; TC = 25 °C; see Figures 4, 5 and 13.) Switching Frequency Dynamic Response (ΔIO/Δt = 1 A/10 µs, VI = 48 V, TC = 25 °C; see Figures 6 — 9.): Load Change from IO = 50% to 75% of IO, max: Peak Deviation Settling Time (VO < 10% peak deviation) Load Change from IO = 50% to 25% of IO, max: Peak Deviation Settling Time (VO < 10% of peak deviation) Device Code or Code Suffix JBW030F JBW030A JBW030F JBW030A Symbol VO, set VO, set VO VO Min 3.25 4.95 3.20 4.85 Typ 3.3 5.0 — — Max 3.35 5.05 3.40 5.15 Unit Vdc Vdc Vdc Vdc All All JBW030F JBW030A — — — — — — — — 0.01 0.05 0.75 0.5 0.1 0.2 1.5 1.5 %VO %VO %VO %VO All All JBW030F JBW030A — — IO IO — — 0.6 0.6 — — — — 20 150 6.5 6.0 mVrms mVp-p A A JBW030F JBW030A JBW030F JBW030A JBW030F JBW030A All IO IO — — η η — — — — — 75 79 — 8.5 8.0 10.0 9.5 78 82 300 — — 13 12.5 — — — A A A A % % kHz JBW030F JBW030A All — — — — — — 5 2 0.5 — — — %VO, set %VO, set ms JBW030F JBW030A All — — — — — — 5 2 0.5 — — — %VO, set %VO, set ms Lineage Power 3 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Data Sheet March 27, 2008 Electrical Specifications (continued) Table 3. Isolation Specifications Parameter Isolation Capacitance Isolation Resistance Min — 10 Typ 2500 — Max — — Unit pF MΩ General Specifications Parameter Calculated MTBF (IO = 80% of IO, max; TC = 40 °C) Weight — Min Typ 4,370,000 — 113 (4.0) Max Unit hours 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 for further information. Parameter Remote On/Off (VI = 36 V to 75 V; open collector or equivalent compatible; signal referenced to VI(–) terminal. See Figure 14 and Feature Descriptions.): JW030x1-M Negative Logic: Logic Low—Module On Logic High—Module Off JW030x-M Positive Logic: Logic Low—Module Off Logic High—Module On Module Specifications: On/Off Current—Logic Low On/Off Voltage: Logic Low Logic High (Ion/off = 0) Open Collector Switch Specifications: Leakage Current During Logic High (Von/off = 10 V) Output Low Voltage During Logic Low (Ion/off = 1 mA) Turn-on Time (@ 80% of IO, max; TA = 25 °C; VO within ±1% of steady state; see Figure 10.) Output Voltage Overshoot Output Voltage Sense Range Output Voltage Set-point Adjustment Range (See Feature Descriptions.) Output Overvoltage Protection (clamp) Device Code or Code Suffix Symbol Min Typ Max Unit All All All All All All Ion/off Von/off Von/off Ion/off Von/off — — –0.7 — — — — — — — — — 80 1.0 1.2 15 50 1.2 150 mA V V µA V ms All All All JBW030F JBW030A — — — VO, clamp VO, clamp — — 80 4.0 5.6 0 — — — — 5 10 110 5.7 7.0 % %VO, nom %VO, nom V V 4 Lineage Power Data Sheet March 27, 2008 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Characteristic Curves 1.2 OUTPUT VOLTAGE, VO (V) INPUT CURRENT, II (A) 3.5 3 2.5 2 1.5 1 0.5 0 0 1 2 3 4 5 6 7 8 9 10 11 1-0726 1 0.8 IO = 6 A 0.6 0.4 0.2 IO = 0.5 A 0 30 35 40 45 50 55 60 INPUT VOLTAGE, VI (V) 65 70 75 1-0763 IO = 3 A VI = 36 V VI = 48 V VI = 75 V OUTPUT CURRENT, IO (A) Figure 1. Typical Input Characteristics Figure 3. JBW030F Typical Output Characteristics 6 OUTPUT VOLTAGE, VO (V) 85 80 EFFICIENCY, η (%) 75 70 65 60 55 VI = 36 V VI = 48 V VI = 75 V 5 4 3 2 1 0 0 2 4 6 8 10 1-0727 VI = 36 V VI = 48 V VI = 75 V 50 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 OUTPUT CURRENT, IO (A) 5 5.5 6 6.5 OUTPUT CURRENT, IO (A) 1-0760 Figure 2. JBW030A Typical Output Characteristics Figure 4. JBW030F Typical Converter Efficiency vs. Output Current Lineage Power 5 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Data Sheet March 27, 2008 Characteristic Curves (continued) 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 0 1 2 3 OUTPUT VOLTAGE, VO (50 mV/div) EFFICIENCY η (%) VI = 36 V VI = 48 V VI = 75 V 4 5 6 1-0878 OUTPUT CURRENT, IO (A) TIME, t (0.2 ms/div) 1-0880 Figure 5. JBW030ATypical Converter Efficiency vs. Output Current Figure 7. JBW030A Typical Output Voltage for a Step Load Change from 50% to 75% OUTPUT VOLTAGE, VO (50 mV/div) OUTPUT CURRENT, IO (2 A/div) TIME, t (0.2 ms/div) 1-0879 OUTPUT CURRENT, IO (2 A/div) OUTPUT VOLTAGE, VO (50 mV/div) OUTPUT CURRENT, IO (2 A/div) TIME, t (0.2 ms/div) 1-0881 Figure 6. JBW030F Typical Output Voltage for a Step Load Change from 50% to 75% Figure 8. JBW030F Typical Output Voltage for a Step Load Change from 50% to 25% 6 Lineage Power Data Sheet March 27, 2008 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Characteristic Curves (continued) OUTPUT VOLTAGE, VO (50 mV/div) Test Configurations TO OSCILLOSCOPE LTEST 12 µH CS 220 µF IMPEDANCE < 0.1 Ω @ 20 ˚C, 100 kHz CURRENT PROBE V I (+) BATTERY VI (-) OUTPUT CURRENT, IO (2 A/div) 8-489(C) Note: Input reflected-ripple current is measured with a simulated source impedance of 12 µH. Capacitor CS offsets possible battery impedance. Current is measured at the input of the module. TIME, t (0.2 ms/div) 1-0882 Figure 11. Input Reflected-Ripple Test Setup COPPER STRIP Figure 9. JBW030A Typical Output Voltage for a Step Load Change from 50% to 25% V O (+) 0.1 µF V O (–) SCOPE RESISTIVE LOAD OUTPUT VOLTAGE, VO (%VO, set) 100 80 40 8-513(C) Note: Use a 0.1 µF ceramic capacitor. Scope measurement should be made using a BNC socket. Position the load between 50 mm and 75 mm (2 in. and 3 in.) from the module. REMOTE ON/OFF, Von/off (5 V/div) Figure 12. Peak-to-Peak Output Noise Measurement Test Setup SENSE(+) CONTACT AND DISTRIBUTION LOSSES VI (+)/CASE VO (+) IO LOAD TIME, t (10 ms/div) 8-733a SUPPLY II Figure 10. Typical Output Voltage Start-Up when Signal Applied to Remote On/Off VI(–) CONTACT RESISTANCE VO (–) SENSE(–) 8-749(C).a Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. [ V O (+) – V O (–) ] I O η = ⎛ ----------------------------------------------------⎞ × 100 ⎝ [ V I (+) – V I (–) ] II ⎠ % Figure 13. Output Voltage and Efficiency Measurement Test Setup Lineage Power 7 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Data Sheet March 27, 2008 Design Considerations Grounding Considerations The case is not connected internally to allow the user flexibility in grounding. 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. 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 operates normally once the output current is brought back into its specified range. Input Source Impedance The power module should be connected to a low acimpedance input source. Highly inductive source impedances can affect the stability of the power module. A 33 µF electrolytic capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the power module helps ensure stability of the unit. (See Figure 11.) 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 REMOTE ON/OFF pin, and off during a logic low. Negative logic remote on/off turns the module off during a logic high and on during a logic low. Negative logic, device code suffix “1,” is the factory-preferred configuration. To turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the VI(–) terminal (Von/off). The switch can be an open collector or equivalent (see Figure 14). A logic low is Von/off = –0.7 V to 1.2 V, during which the module is off. The maximum Ion/off during a logic low is 1 mA. The switch should maintain a logiclow voltage while sinking 1 mA. During a logic high, the maximum Von/off generated by the power module is 15 V. The maximum allowable leakage current of the switch at Von/off = 15 V is 50 µA. The module has internal capacitance to reduce noise at the ON/OFF pin. Additional capacitance is not generally needed and may degrade the start-up characteristics of the module. CAUTION: To avoid damaging the power module or external on/off circuit, the connection between the VI(–) pin and the input source must be made before or simultaneously to making a connection between the ON/OFF pin and the input source (either directly or through the external on/off circuit.) 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, and EN 60950 (VDE0805):2001-12. 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: n The input source is to be provided with reinforced insulation from any other hazardous voltages, including the ac mains. One VI pin and one VO pin are to be grounded or both the input and output pins are to be kept floating. The input pins of the module are not operator accessible. Another SELV reliability test is conducted on the whole system, as required by the safety agencies, on the combination of supply source and the subject module to verify that under a single fault, hazardous voltages do not appear at the module's output. n n n 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 5 A fast-acting fuse in the ungrounded lead. 8 Lineage Power Data Sheet March 27, 2008 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Output Voltage Set-Point Adjustment (Trim) Output voltage trim allows the user to increase or decrease the output voltage set point of a module. This is accomplished by connecting an external resistor between the TRIM pin and either the SENSE(+) or SENSE(–) pins. With an external resistor between the TRIM and SENSE(–) pins (Radj-down), the output voltage set point (VO, adj) decreases (see Figure 16). The following equation determines the required external-resistor value to obtain an output voltage change of % Δ. 1 – %Δ R adj-down = ⎛ ------------------ ⎞ 10 k Ω ⎝ %Δ ⎠ For example, to lower the output voltage by 20%, the external resistor value must be: 1 – 0.2 R adj-down = ⎛ ---------------- ⎞ 10 k Ω = ⎝ 0.2 ⎠ Feature Descriptions (continued) Remote On/Off (continued) VI(+) VI(-) – Von/off SENSE(+) VO(+) REMOTE ON/OFF LOAD VO(–) SENSE(–) + Ion/off 8-720(C).h Figure 14. Remote On/Off Implementation 40.00 k Ω 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(–)] ≤ 0.2 V The voltage between the VO(+) and VO(–) terminals must not exceed the minimum output overvoltage shutdown voltage as indicated in the Feature Specifications table. This limit includes any increase in voltage due to remote-sense compensation and output voltage setpoint adjustment (trim). See Figure 15. 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. With an external resistor connected between the TRIM and SENSE(+) pins (Radj-up), the output voltage set point (VO, adj) increases (see Figure 17). The following equations determine the required external-resistor value to obtain an output voltage change of % Δ. JBW030A: 1 + %Δ V O, nom R adj-up = ⎛ ----------------- – 1⎞ ⎛ ------------------⎞ 10 k Ω ⎝ 2.5 ⎠ ⎝ %Δ ⎠ For example, to increase the output voltage of the JBW030A by 5%, the external resistor value must be: 1 + 0.05 5.0 R adj-up = ⎛ ------- – 1⎞ ⎛ -------------------- ⎞ 10 k Ω = 210 k Ω ⎝ 2.5 ⎠ ⎝ 0.05 ⎠ JBW030F: 1 + %Δ V O, nom R adj-up = ⎛ ------------------- – 1⎞ ⎛ ------------------⎞ 10 k Ω ⎝ 1.235 ⎠ ⎝ %Δ ⎠ For example, to increase the output voltage of the JBW030F by 5%, the external resistor must be: SENSE(+) SENSE(–) VI(+) SUPPLY II VI(-) CONTACT RESISTANCE VO(–) CONTACT AND DISTRIBUTION LOSSES 8-651(C).m 1 + 0.05 3.3 R adj-up = ⎛ -------------- – 1⎞ ⎛ -------------------- ⎞ 10 k Ω = 351.1 k Ω ⎝ 1.235 ⎠ ⎝ 0.05 ⎠ IO LOAD VO(+) Figure 15. Effective Circuit Configuration for Single-Module Remote-Sense Operation Lineage Power 9 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Data Sheet March 27, 2008 Feature Descriptions (continued) Output Voltage Set-Point Adjustment (Trim) (continued) The combination of the output voltage adjustment and sense range and the output voltage given in the Feature Specifications table cannot exceed 110% of the nominal output voltage between the VO(+) and VO(–) terminals. The JBW030-Series Power Modules have a fixed current-limit set point. Therefore, as the output voltage is adjusted down, the available output power is reduced. In addition, the minimum output current is a function of the output voltage. As the output voltage is adjusted down, the minimum required output current can increase. VI(+) ON/OFF CASE VI(–) VO(+) SENSE(+) Radj-up TRIM SENSE(–) VO(–) 8-715(C)b RLOAD Figure 17. Circuit Configuration to Increase Output Voltage Output Overvoltage Protection The output overvoltage clamp 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. VI (+) ON/OFF CASE VI (–) VO (+) SENSE(+) TRIM Radj-down SENSE(–) VO(–) 8-748(C)b RLOAD Figure 16. Circuit Configuration to Decrease Output Voltage 10 Lineage Power Data Sheet March 27, 2008 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Thermal Considerations The JBW030-Series Power Modules are designed to operate in a variety of thermal environments. As with any electronic component, sufficient cooling must be provided to help ensure reliable operation. Heat-dissipating components inside the module are thermally coupled to the case to enable heat removal by conduction, convection, and radiation to the surrounding environment. The thermal data presented is based on measurements taken in a wind tunnel. The test setup shown in Figure 18 was used to collect data for Figure 21. The graphs in Figures 19 and 20 provide general guidelines for use. Actual performance can vary depending on the particular application environment. The maximum case temperature of 100 °C must not be exceeded. 12.7 (0.50) WIND TUNNEL WALL MEASURE CASE TEMPERATURE (TC) AT CENTER OF UNIT AIRFLOW CONNECTORS TO LOADS, POWER SUPPLIES, AND DATALOGGER, 6.35 (0.25) TALL AIRFLOW 101.6 (4.00) 203.2 (8.00) 76.2 (3.00) AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE 203.2 (8.00) 19.1 (0.75) 8-1046(C) Note: Dimensions are in millimeters and (inches). Figure 18. Thermal Test Setup Basic Thermal Performance The JBW030-Series Power Modules are constructed with a specially designed, heat spreading enclosure. As a result, full-load operation in natural convection at 50 °C can be achieved without the use of an external heat sink. Higher ambient temperatures can be sustained by increasing the airflow or by adding a heat sink. As stated, this data is based on a maximum case temperature of 100 °C and measured in the test configuration shown in Figure 18. Lineage Power 11 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Data Sheet March 27, 2008 Thermal Considerations (continued) POWER DISSIPATION, PD (W) 9 8 7 6 5 4 3 2 1 0 30 40 50 60 70 80 90 100 2.0 ms -1(400 ft./min.) 1.0 ms -1(200 ft./min.) 0.5 ms -1(100 ft./min.) NATURAL CONVECTION Forced Convection Cooling To determine the necessary airflow, determine the power dissipated by the unit for the particular application. Figures 19 and 20 show typical power dissipation for these power modules over a range of output currents. With the known power dissipation and a given local ambient temperature, the appropriate airflow can be chosen from the derating curves in Figure 21. For example, if the JBW030A dissipates 6.2 W, the minimum airflow in a 80 °C environment is 1 ms–1 (200 ft./min.). 7 POWER DISSIPATED, PD (W) 6 5 4 3 2 1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 OUTPUT CURRENT, IO (A) 5 5.5 6 6.5 1-0762 LOCAL AMBIENT TEMPERATURE, T (˚C) A 8-1051(C) VI = 36 V VI = 48 V VI = 75 V Figure 21. Forced Convection Power Derating with No Heat Sink; Either Orientation Heat Sink Selection Several heat sinks are available for these modules. The case includes through-threaded mounting holes allowing attachment of heat sinks or cold plates from either side of the module. The mounting torque must not exceed 0.56 N-m (5 in./lb.). Figure 22 shows the case-to-ambient thermal resistance, θ (°C/W), for these modules. These curves can be used to predict which heat sink will be needed for a particular environment. For example, if the JBW030A dissipates 7 W of heat in an 80 °C environment with an airflow of 0.7 ms–1 (130 ft./min.), the minimum heat sink required can be determined as follows: θ ≤ ( T C, max – T A ) ⁄ P D where: VI = 36 V Figure 19. JBW030F Power Dissipation vs. Output Current 8 POWER DISSIPATED, PD (W) 7 6 5 4 3 2 1 0 0 1 2 3 4 OUTPUT CURRENT, IO (A) 5 6 1-0761 VI = 75 V VI = 48 V θ = module’s total thermal resistance TC, max = case temperature (See Figure 18.) TA = inlet ambient temperature (See Figure 18.) PD = power dissipation Figure 20. JBW030A Power Dissipation vs. Output Current θ ≤ (100 – 80)/7 θ ≤ 2.9 °C/W From Figure 22, the 1/2 in. high heat sink or greater is required. 12 Lineage Power Data Sheet March 27, 2008 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Although the previous example uses 100 °C as the maximum case temperature, for extremely high reliability applications, one can use a lower temperature for TC, max. It is important to point out that the thermal resistances shown in Figure 22 are for 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 will generally be lower than the resistance of the heat sink by itself. The data in Figure 22 was taken with a thermally conductive dry pad between the case and the heat sink to minimize contact resistance (typically 0.1 °C/W to 0.3 °C/W). For a more detailed explanation of thermal energy management for this series of power modules as well as more details on available heat sinks, please request the following technical note: Thermal Energy Management for JC- and JW-Series 30 Watt Board-Mounted Power Modules (TN97-016EPS). Thermal Considerations (continued) Heat Sink Selection (continued) 8 CASE-TO-AMBIENT THERMAL RESISTANCE, θCA (˚C/W) 7 6 5 4 3 2 1 0 0 0.25 (50) 0.51 0.76 (100) (150) 1.02 1.27 (200) (250) 1.52 1.78 2.03 (300) (350) (400) NO HEAT SINK 1/4 in. HEAT SINK 1/2 in. HEAT SINK 1 in. HEAT SINK 1 1/2 in. HEAT SINK AIR VELOCITY, ms -1(ft./min.) 8-1052(C).a Figure 22. Case-to-Ambient Thermal Resistance vs. Air Velocity Curves; Either Orientation Layout Considerations Copper paths must not be routed beneath the power module standoffs. Lineage Power 13 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Data Sheet March 27, 2008 Outline Diagram Dimensions are in millimeters and (inches). Tolerances: x.x ± 0.5 mm (0.02 in.), x.xx ± 0.25 mm (0.010 in.). Top View 57.9 (2.28) MAX Pin marking designation is shown for reference only VI(+) ON/ OFF VO(+) 61.0 (2.40) MAX + SEN TRIM CASE - SEN VO(-) VI(-) Side View 12.7 (0.50) MAX 0.51 (0.020) 1.02 (0.040) DIA SOLDER-PLATED BRASS ,ALL PINS Bottom View 5.1 (0.20) MIN STANDOFF, 12.7 (0.50) MAX 4 PLACES 5.1 (0.20) 7.1 (0.28) MOUNTING INSERTS M3 x 0.5 THROUGH, 4 PLACES 7.1 (0.28) 10.16 (0.400) 50.8 (2.00) 25.40 (1.000) 4 3 5 6 7 10.16 (0.400) 17.78 (0.700) 25.40 (1.000) 35.56 (1.400) 35.56 (1.400) 2 1 8 9 48.26 (1.900) TERMINALS 4.8 (0.19) 48.3 (1.90) MOUNTING HOLES 8-716(C) 14 Lineage Power Data Sheet March 27, 2008 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Recommended Hole Pattern Component-side footprint. Dimensions are in millimeters and (inches). 4.8 (0.19) 48.3 (1.90) 1 35.56 (1.400) 50.8 (2.00) 25.40 (1.000) 10.16 (0.400) 2 48.26 (1.900) TERMINALS 9 8 7 35.56 (1.400) 25.40 (1.000) 17.78 10.16 (0.700) (0.400) 3 4 6 5 5.1 (0.20) 12.7 (0.50) MAX MOUNTING INSERTS MODULE OUTLINE 8-716(C) Ordering Information Please contact your Lineage Power Account Manager or Field Application Engineer for pricing and availability. Table 4. Device Codes Input Voltage 48 V 48 V 48 V 48 V Output Voltage 3.3 V 3.3 V 5V 5V Output Power 21.5 W 21.5 W 30 W 30 W Remote On/ Off Logic Positive Negative Positive Negative Device Code JBW030F JBW030F1 JBW030A JBW030A1 Comcode 108966078 108975418 108966086 108970203 Table 5. Device Options Option Short pins: 3.68 mm ± 0.25 mm (0.145 in. ± 0.010 in.) Short pins: 2.79 mm ± 0.25 mm (0.110 in. ± 0.010 in.) Negative Logic On/Off Device Code Suffix 6 8 1 Lineage Power 15 JBW030-Series Power Module: dc-dc Converters 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W Data Sheet March 27, 2008 Ordering Information (continued) Table 6. 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) 1 1/2 in. longitudinal kit (heat sink, thermal pad, and screws) Note: Dimensions are in millimeters and (inches). 1/4 IN. Comcode 407243989 407243997 407244706 407244714 407244722 407244730 407244748 407244755 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) D000-c.cvs D000-d.cvs Figure 23. Longitudinal Heat Sink Figure 24. Transverse Heat Sink A sia-Pacific Head qu art ers T el: +65 6 41 6 4283 World W ide Headq u arters Lin eag e Po wer Co rp oratio n 30 00 Sk yline D riv e, Mes quite, T X 75149, U SA +1-800-526-7819 (Outs id e U .S.A .: +1- 97 2-2 84 -2626 ) w ww.line ag ep ower.co m e-m ail: tech sup port1@ lin ea gep ower.co m E u ro pe, M id dle-East an d Afric a He ad qu arters T el: +49 8 9 6089 286 I nd ia Head qu arters T el: +91 8 0 28411633 Lineage Power reserves the right to make changes to the produc t(s) or information contained herein without notice. No liability is ass umed as a res ult of their use or applic ation. No rights under any patent acc ompany the sale of any s uc h pr oduct(s ) or information. © 2008 Lineage Power Corpor ation, (Mesquite, Texas ) All International Rights Res er ved. March 27, 2008 FDS02-038EPS (Replaces FDS02-037EPS )