Advance Data Sheet September 2000 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Features The QC/QW030-Series Power Modules use advanced, surface-mount technology and deliver high-quality, efficient, and compact dc-dc conversion. Applications ■ Distributed power architectures ■ Workstations ■ Computer equipment ■ Communications equipment ■ Optical transport equipment Options ■ Heat sinks available for extended operation ■ Choice of remote on/off logic configurations ■ Choice of two pin lengths ■ Small size: 36.8 mm x 57.9 mm x 12.7 mm (1.45 in. x 2.28 in. x 0.50 in.) ■ High power density ■ High efficiency: 86% typical ■ Low output noise ■ Constant frequency ■ Industry-standard pinout ■ Metal case ■ 2:1 input voltage range ■ Overvoltage and overcurrent protection ■ Remote on/off ■ Remote sense ■ Adjustable output voltage ■ ISO* 9001 and ISO 14001 Certified manufacturing facilities ■ UL† 1950 Recognized, CSA‡ C22.2 No. 950-95 Certified, VDE § 0805 (EN60950, IEC950) Licensed ■ CE mark meets 73/23/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. ‡ CSA is a registered trademark of Canadian Standards Assn. § 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.) Description The QC/QW030-Series Power Modules are dc-dc converters that operate over an input voltage range of 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc and provide a precisely regulated dc output. The outputs are fully isolated from the inputs, allowing versatile polarity configurations and grounding connections. The modules have maximum power ratings of 30 W at a typical full-load efficiency of up to 86%. These encapsulated modules offer a metal case for optimum thermal performance. Threaded-through holes are provided to allow easy mounting or addition of a heat sink for high-temperature applications. The standard feature set includes remote sensing, output trim, and remote on/off for convenient flexibility in distributed power applications. QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 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 (100 ms) Device Symbol Min Max Unit QC030x QW030x QW030x VI VI All VI, trans TC — — — –40 50 80 100 105* Vdc Vdc V °C All All Tstg — –55 — 125 1500 °C Vdc Operating Case Temperature (See Thermal Considerations section.) Storage Temperature I/O Isolation Voltage * Maximum case temperature varies based on power dissipation. See power derating curves for details. 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: QC030x QW030x Maximum Input Current (VI = 0 V to 75 V; IO = IO, max): QC030x QW030x (VO ≤ 5 V) QW030x (VO > 5 V) Inrush Transient Input Reflected-ripple Current, Peak-to-peak (5 Hz to 20 MHz, 12 µH source impedance; see Test Configurations section.) Input Ripple Rejection (120 Hz) Device Symbol Min Typ Max Unit All All VI VI 18 36 24 48 36 75 Vdc Vdc All All All All All II, max II, max II, max i2t II — — — — — — — — — 5† 3.5† 1.7† 2.2† 0.2† — A A A A2s mAp-p All — — 50† — dB † Engineering estimate. 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 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. 2 Lucent Technologies Inc. Advance Data Sheet September 2000 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs 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 Test Configurations section.) Output Regulation: Line (VI = 36 V to 75 V) Load (IO = IO, min to IO, max) Temperature (TC = –30 °C to +100 °C) Output Ripple and Noise Voltage (See Test Configurations section.): Measured across one 4.7 µF ceramic capacitor: RMS Peak-to-peak (5 Hz to 20 MHz) Measured across one 2.2 µF ceramic capacitor: RMS Peak-to-peak (5 Hz to 20 MHz) External Load Capacitance Output Current (At IO < IO, min, the modules may exceed output ripple specifications.) Output Current-limit Inception (VO = 90% of VO, set) Output Short-circuit Current (VO = 0.25 V) Device Suffix Symbol Min Typ Max Unit F A B C F A B C VO, set VO, set VO, set VO, set VO VO VO VO 3.23 4.92 11.80 14.55 3.18 4.86 11.60 14.25 3.3 5.0 — — — — — — 3.37 5.12 12.30 15.48 3.42 5.18 12.45 15.75 Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc A, F B, C A, F B C A, F B C — — — — — — — — — — — — — — — — 1 2 2 8 10 15 40 65 — — — — — — — — mV mV mV mV mV mV mV mV F A F A — — — — — — — — 15 10 40 30 — — — — mVrms mVrms mVp-p mVp-p B, C B C A, F B, C F A B C F A B C F A B C — — — — — IO IO IO IO IO IO IO IO IO IO IO IO — — — 0 0 0.45* 0.30* 0.26* 0.26* — — — — — — — — 15 40 50 — — — — — — 7.5 7.0 3.7 3.3 11.5 9.5 5.5 4.5 — — — 1000* 470 6.50 6.00 3.00 2.66 — — — — — — — — mVrms mVp-p mVp-p µF µF A A A A A A A A A A A A * Engineering estimate. Lucent Technologies Inc. 3 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 Electrical Specifications (continued) Table 2. Output Specifications (continued) Parameter Efficiency (VI = 48 V; IO = IO, max; TC = 25 °C) Switching Frequency Dynamic Response (∆IO/∆t = 1 A/10 µs, VI = 48 V, TC = 25 °C): 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) Device Suffix Symbol Min Typ Max Unit F A B, C All η η η — — — — — 83 86 89 300 — — — — % % % kHz A, C, F B B, C, F A — — — — — — — — 2.0 2.5 5.0 3.0 — — — — %VO, set %VO, set ms ms A, C, F B B, C, F A — — — — — — — — 2.0 2.5 5.0 3.0 — — — — %VO, set %VO, set ms ms * Engineering estimate. Table 3. Isolation Specifications Parameter Isolation Capacitance (engineering estimate) Isolation Resistance Device All All Min — 10 Typ 600 — Max — — Unit pF MΩ Device All Min Typ 5,000,000 Max Unit hours All — — 75 (2.7) g (oz.) Table 4. General Specifications Parameter Calculated MTBF (IO = 80% of IO, max; TC = 40 °C) Weight 4 Lucent Technologies Inc. Advance Data Sheet September 2000 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions section of this data sheet for additional information. Parameter Remote On/Off Signal Interface (VI = VI, min to VI, max; open collector or equivalent compatible; signal referenced to VI(–) terminal.): Negative Logic: Device Code Suffix “1”: Logic Low—Module On Logic High—Module Off Positive Logic: If Device Code Suffix “1” Is Not Specified: 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 mA) Open Collector Switch Specifications: Leakage Current During Logic High (Von/off = 15 V) Output Low Voltage During Logic Low (Ion/off = 1 mA) Turn-on Delay and Rise Times (at 80% of IO, max; TA = 25 °C): Case 1: On/Off Input Is Set for Logic High and then Input Power Is Applied (delay from point at which VI = VI, min until VO = 10% of VO, nom). Case 2: Input Power Is Applied for at Least One Second, and Then the On/Off Input Is Set to Logic High (delay from point at which Von/off = 0.9 V until VO = 10% of VO, nom). Output Voltage Rise Time (time for VO to rise from 10% of VO, nom to 90% of VO, nom) Output Voltage Overshoot (at 80% of IO, max; TA = 25 °C) Output Voltage Adjustment (See Feature Descriptions section.): Output Voltage Remote-sense Range Output Voltage Set-point Adjustment Range (trim) Output Overvoltage Protection (clamp) Device Suffix Symbol Min Typ Max Unit All Ion/off — — 1.0 mA All All Von/off Von/off –0.7 — — — 1.2 15 V V All Ion/off — — 50 µA All Von/off — — 1.2 V All Tdelay — 8 — ms All Tdelay — 1 — ms All Trise — 1 — ms All — — — 5* % All A, F B, C F A B C — — — — 95 90 3.8* 5.5* 13.2* 16.5* — — — — — — — 0.5 110 110 4.9* 7.0* 21.0* 24.0* V %VO, nom %VO, nom V V V V VO, ovp VO, ovp VO, ovp VO, ovp * Engineering estimate. Lucent Technologies Inc. 5 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 Feature Specifications (continued) Parameter Device Suffix Symbol Min Typ Max Unit F A B C Tcase Tcase Tcase Tcase — — — — 105 105 110 110 — — — — °C °C °C °C All All — — — — 14 27 — — V V Overtemperature Protection (VI = 75 V, see Figure 8.): IO = 6.5 A IO = 6 A IO = 3 A IO = 2.66 A Undervoltage Lockout: QC030x QW030x * Engineering estimate. Test Configurations SENSE(+) VI(+) TO OSCILLOSCOPE LTEST CURRENT PROBE CONTACT AND DISTRIBUTION LOSSES VO(+) IO II LOAD SUPPLY V I (+) 12 µH BATTERY VI(–) CS 220 µF ESR < 0.1 Ω 33 µF @ 20 °C, 100 kHz ESR < 0.7 Ω @ 100 kHz CONTACT RESISTANCE VO(–) SENSE(–) 8-749(C) V I (–) 8-203(C).l Note: Measure input reflected-ripple current with a simulated source inductance (LTEST) of 12 µH. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 1. QC/QW030-Series Input Reflected-Ripple Test Setup 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 (–) ]I I Figure 3. QC/QW030-Series Output Voltage and Efficiency Measurement Test Setup Design Considerations COPPER STRIP V O (+) Grounding Considerations SEE NOTE SCOPE RESISTIVE LOAD V O (–) For the QC modules, the case is internally connected to the VI(–) pin. For the QW modules, the case is internally connected to the VI(+) pin. 8-513(C).s Note: Use the capacitor(s) referenced in the Output Ripple and Noise Voltage specifications in the Output Specifications table. 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 2. QC/QW030-Series Peak-to-Peak Output Noise Measurement Test Setup 6 Lucent Technologies Inc. Advance Data Sheet September 2000 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Design Considerations (continued) Input Source Impedance ■ 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. 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. If the input source inductance exceeds 4 µH, a 33 µF electrolytic capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the power module helps ensure stability of the unit. 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. Safety Considerations The input to these units is to be provided with a maximum 5 A normal-blow fuse in the ungrounded lead. QC Modules 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 1950, CSA C22.2 No. 950-95, and VDE 0805 (EN60950, IEC950). For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. 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 normal-blow fuse in the ungrounded lead. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. 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. Remote On/Off QW Modules 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). If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75 Vdc), for the module’s output to be considered meeting the requirements of safety extra-low voltage (SELV), all of the following must be true: ■ The input source is to be provided with reinforced insulation from any 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. Lucent Technologies Inc. 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, device code suffix “1,” turns the module off during logic-high voltage 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 may be an open collector or equivalent (see Figure 4). A logic low is Von/off = –0.7 V to 1.2 V. The maximum Ion/off during a logic low is 1 mA. The switch should maintain a logic-low voltage while sinking 1 mA. During a logic high, the maximum Von/off generated by the power module is 15 V. The maximum allowable leakage current of the switch at Von/off = 15 V is 50 µA. ■ 7 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Feature Descriptions (continued) Remote On/Off (continued) If not using the remote on/off feature, do one of the following: For positive logic, leave the ON/OFF pin open. For negative logic, short the ON/OFF pin to VI(–). Advance Data Sheet September 2000 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. VI(+) SENSE(+) VI(–) SENSE(–) – Von/off SUPPLY + Ion/off REMOTE ON/OFF VI(+) VO(+) VI(–) VO(–) IO II CONTACT RESISTANCE LOAD CONTACT AND DISTRIBUTION LOSSES 8-651(C).m 8-758(C).a Figure 4. QC/QW030-Series Remote On/Off Implementation Figure 5. QC/QW030-Series Effective Circuit Configuration for Single-Module RemoteSense Operation Remote Sense Output Voltage Set-Point Adjustment (Trim) 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, e.g., on the QW030A: 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. The trim resistor should be positioned close to the module. [VO(+) – VO(–)] – [SENSE(+) – SENSE(–)] ≤ 0.5 V If not using the trim feature, leave the TRIM pin open. The voltage between the VO(+) and VO(–) terminals must not exceed the minimum output overvoltage protection value shown 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 5. 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 your Lucent Technologies Account Manager or Application Engineer if you need to increase the output voltage more than the above limitation. 8 With an external resistor between the TRIM and SENSE(+) pins (Radj-down), the output voltage set point (VO, adj) decreases (see Figure 6). The following equation determines the required external-resistor value to obtain a change in output voltage from VO, nom to VO, adj. The values of G, H, and L are shown in Table 5. R adj-down ( V O, adj – L ) G = --------------------------------------- – H Ω ( V O, nom – V O, adj ) The QC/QW030 modules have a fixed current-limit set point. As the output voltage is adjusted down, the available output power is reduced. With an external resistor connected between the TRIM and SENSE(–) pins (Radj-up), the output voltage set point (VO, adj) increases (see Figure 7). Lucent Technologies Inc. QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 Feature Descriptions (continued) VI(+) Output Voltage Set-Point Adjustment (Trim) (continued) ON/OFF SENSE(+) Radj-down CASE The following equation determines the required external-resistor value to obtain a change in output voltage from VO, nom to VO, adj. The values of G, H, K, and L are shown in Table 5. R adj-up VO(+) GL = ----------------------------------------- – H Ω [ ( V O, adj – L ) – K ] VI(–) RLOAD TRIM SENSE(–) VO(–) 8-715(C).i Figure 6. QC/QW030-Series Circuit Configuration to Decrease Output Voltage Table 5. Values for Trim Equations VI(+) Device Suffix Vo, nom F A B C 3.3 5 12 15 G H K ON/OFF 5110 5110 10,000 10,000 3010 3010 3010 3010 2.06 2.5 9.5 12.5 1.24 2.5 2.5 2.5 The voltage between the VO(+) and VO(–) terminals must not exceed the minimum output overvoltage protection value shown 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 5. 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 your Lucent Technologies Account Manager or Application Engineer if the output voltage needs to be increased 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. Lucent Technologies Inc. VO(+) L CASE SENSE(+) TRIM RLOAD Radj-up VI(–) SENSE(–) VO(–) 8-748(C).f Figure 7. QC/QW030-Series 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. This control loop has a higher voltage set point than the primary loop (see the Feature Specifications table). In a fault condition, the overvoltage clamp ensures that the output voltage does not exceed VO, clamp, max. This provides a redundant voltage-control that reduces the risk of output overvoltage. Overtemperature Protection These modules feature overtemperature protection to safeguard the modules against thermal damage. When the temperature exceeds the overtemperature threshold given in the feature specifications table, the module will limit the available output current in order to help protect against thermal damage. The overcurrent inception point will gradually move back to its original level as the module is cooled below the overtemperature threshold. 9 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 Feature Descriptions (continued) Heat Transfer Without Heat Sinks Input Undervoltage Lockout Increasing airflow over the module enhances the heat transfer via convection. Figures 9 and 10 show 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 3 m/s (600 ft./min.). At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will begin to operate at an input voltage between the undervoltage lockout limit and the minimum operating input 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 case. Heat is removed by conduction, convection, and radiation to the surrounding environment. Proper cooling can be verified by measuring the case temperature. The case temperature should be measured at the position indicated in Figure 8. 33 (1.30) What is the minimum airflow necessary for a QW030A operating at VI = 48 V, an output current of 3.5 A, and a maximum ambient temperature of 89 °C? Solution Given: VI = 48 V IO = 3.5 A TA = 89 °C Determine PD (Use Figure 12.): PD = 3 W VI(+) ON/OFF VI(–) VO(+) (+)SENSE TRIM (–)SENSE VO(–) Determine airflow (v) (Use Figure 9.): v = 1.0 m/s (200 ft./min.) 7 8-2104(C).a Note: Top view, pin locations are for reference only. Measurements shown in millimeters and (inches). Figure 8. QC/QW030-Series Case Temperature Measurement Location The temperature at this location should not exceed 105 °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 105 °C, you can limit this temperature to a lower value for extremely high reliability. 10 Example POWER DISSIPATION, PD (W) 14 (0.55) Systems in which these power modules may be used typically generate natural convection airflow rates of 0.3 ms–1 (60 ft./min.) due to other heat-dissipating components in the system. Therefore, the natural convection condition represents airflow rates of up to 0.3 ms–1 (60 ft./min.). Use of Figure 9 is shown in the following example. MAX CASE TEMP. 6 5 4 3 2 NATURAL CONVECTION 1.0 ms -1 (200 ft./min.) 2.0 ms -1 (400 ft./min.) 1 3.0 ms -1 (600 ft./min.) 0 40 50 60 70 80 90 100 110 MAX AMBIENT TEMPERATURE, TA (°C) 8-3406(F) Figure 9. QW030A, F Forced Convection Power Derating with No Heat Sink; Either Orientation Lucent Technologies Inc. QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 Thermal Considerations (continued) Heat Transfer Without Heat Sinks (continued) POWER DISSIPATION, PD (W) 7.0 MAX CASE TEMPERATURE 6.0 5.0 NATURAL CONVECTION 1.0 ms –1 (200 ft./min.) 2.0 ms –1 (400 ft./min.) 3.0 ms –1 (600 ft./min.) 4.0 3.0 POWER DISSIPATION, PD (W) 6 5 4 3 VI = 75 V VI = 48 V VI = 36 V 2 1 0 0.3 1.3 2.3 3.3 4.3 5.3 6.3 2.0 OUTPUT CURRENT, IO (A) 8-9439(C) 1.0 0.0 40 50 60 70 80 90 100 110 MAX AMBIENT TEMPERATURE, TA (°C) Figure 12. QW030A Typical Power Dissipation vs. Output Current at TA = 25 °C 8-3366(C).a Note: Derating chart is estimated on information available at the time of publishing. Contact your Lucent Technologies Account Manager or Application Engineer for updated information. POWER DISSIPATION, PD (W) 6 5 4 POWER DISSIPATION, PD (W) Figure 10. QW030B, C Forced Convection Power Derating with No Heat Sink; Either Orientation 6 5 4 VI = 75 V VI = 48 V VI = 36 V 3 2 1 0 0.253 0.753 3 1.253 1.753 2.253 2.753 3.253 OUTPUT CURRENT, IO (A) 8-3376(C) VI = 75 V VI = 48 V VI = 36 V 2 Figure 13. QW030B Typical Power Dissipation vs. Output Current at TA = 25 °C 1 0 0.3 1.3 2.3 3.3 4.3 5.3 6.3 7.3 OUTPUT CURRENT, IO (A) 8-9439(C).a Figure 11. QW030F Typical Power Dissipation vs. Output Current at TA = 25 °C Lucent Technologies Inc. 11 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Thermal Considerations (continued) Heat Transfer Without Heat Sinks (continued) POWER DISSIPATION, PD (W) 6 5 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 the case-toambient thermal resistance curves had a thermal-conductive dry pad between the case and the heat sink to minimize contact resistance. 4 Custom Heat Sinks 3 2 VI = 75 V VI = 48 V VI = 36 V 1 0 0.27 0.77 1.27 1.77 2.27 2.77 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 (θcs) and sink-to-ambient (θsa) as shown in Figure 15. OUTPUT CURRENT, IO (A) 8-3287(C) Figure 14. QW030C Typical Power Dissipation vs. Output Current at TA = 25 °C Heat Transfer with Heat Sinks The power modules have 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. The mounting torque from the pin side must not exceed 0.25 N-m (2.2 in.-lbs.). 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 – TA) C, max θ ca = ∆T --------------------- = -----------------------PD PD TC TS cs TA sa 8-1304(C) Figure 15. QC/QW030-Series Resistance from Case-to-Sink and Sink-to-Ambient For a managed interface using thermal grease or foils, a value of θcs = 0.1 °C/W to 0.3 °C/W is typical. The solution for heat sink resistance is: (TC – TA) PD θ sa = ------------------------- – θ cs 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. Layout Considerations PD The location to measure case temperature (TC) is shown in Figure 8. Consult your Lucent Technologies Account Manager or Application Engineer for case-toambient thermal resistance vs. airflow for various heat sink configurations, heights, and orientations. Longitudinal orientation is defined as the long axis of the module that is parallel to the airflow direction, whereas in the transverse orientation, the long axis is perpendicular to the airflow. These curves are obtained by experimental testing of heat sinks, which are offered in the product catalog. 12 Advance Data Sheet September 2000 Copper paths must not be routed beneath the power module standoffs. For additional layout guidelines, refer to the FLTR100V10 or FLTR100V20 data sheet. Lucent Technologies Inc. QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 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 SIDE LABEL* 36.8 (1.45) 57.9 (2.28) Side View 12.7 (0.50) 0.51 (0.020) 1.02 (0.040) DIA SOLDER-PLATED BRASS, ALL PLACES 4.1 (0.16) MIN, ALL PLACES 6.1 (0.24), 4 PLACES Bottom View 3.6 (0.14) 50.80 (2.000) 5.3 (0.21) 10.9 (0.43) 3.81 (0.150) VO(–) VI(–) 15.24 (0.600) 26.16 (1.030) 7.62 (0.300) 5.3 (0.21) – SENSE TRIM ON/OFF 11.43 (0.450) 7.62 (0.300) 15.24 (0.600) + SENSE VO(+) VI(+) 47.2 (1.86) MOUNTING INSERTS M3 x 0.5 THROUGH, 2 PLACES 8-1769(F).c * Side label includes Lucent name, product designation, safety agency markings, input/output voltage and current ratings, and bar code. Lucent Technologies Inc. 13 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 Recommended Hole Pattern Component-side footprint. Dimensions are in millimeters and (inches). 5.3 (0.21) 7.62 (0.300) 47.2 (1.86) 26.16 (1.030) 15.24 (0.600) VI(+) VO(+) + SENSE TRIM ON/OFF – SENSE VI(–) 7.62 (0.300) 15.24 (0.600) VO(–) 3.81 (0.150) 5.3 (0.21) 10.9 (0.43) 11.43 (0.450) 50.80 (2.000) MOUNTING INSERTS M3 x 0.5 THROUGH, 2 PLACES 3.6 (0.14) 8-1769(F).c Ordering Information Optional features may be ordered using the device code suffixes shown below. The feature suffixes are shown in numerically descending order. Please contact your Lucent Technologies Account Manager or Application Engineer for pricing and availability. Table 6. Device Codes Input Voltage 48 Vdc 48 Vdc 48 Vdc 48 Vdc 48 Vdc 48 Vdc 48 Vdc 48 Vdc Output Voltage 3.3 Vdc 5 Vdc 12 Vdc 15 Vdc 3.3 Vdc 5 Vdc 12 Vdc 15 Vdc Output Power 21.5 W 30 W 36 W 40 W 21.5 W 30 W 36 W 40 W Output Current 6.5 A 6A 3A 2.66 A 6.5 A 6A 3A 2.66 A Remote On/ Off Logic Negative Negative Negative Negative Positive Positive Positive Positive Device Code QW030F1 QW030A1 QW030B1 QW030C1 QW030F QW030A QW030B QW030C Comcode 108729807 108748344 108846171 108729799 TBD 108710765 TBD TBD Table 7. Device Options 14 Option Device Code Suffix 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.) 8 6 Lucent Technologies Inc. QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 Device Accessories Accessory Comcode 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) 848060992 848061008 848061016 848061024 848061032 848061040 Dimensions are in millimeters and (inches). 1/4 IN. 2.280 ± 0.015 (57.91 ± 0.38) 1.450 ± 0.015 (36.83 ± 0.38) 1/2 IN. 1/4 IN. 1/2 IN. 1 IN. 1 IN. 1.850 ± 0.005 (47.24 ± 0.13) 1.030 ± 0.005 (26.16 ± 0.13) 8-2473(F) 8-2472(F) Figure 16. QC/QW030-Series Longitudinal Heat Sink Lucent Technologies Inc. Figure 17. QC/QW030-Series Transverse Heat Sink 15 QC/QW030-Series Power Modules: dc-dc Converters; 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs Advance Data Sheet September 2000 For additional information, contact your Lucent Technologies Account Manager or the following: POWER SYSTEMS UNIT: Power Systems Group, Lucent Technologies Inc., 3000 Skyline Drive, Mesquite, TX 75149, USA +1-800-526-7819 (Outside U.S.A.: +1-972-284-2626, FAX +1-888-315-5182) (product-related questions or technical assistance) INTERNET: http://www.lucent.com/networks/power E-MAIL: [email protected] ASIA PACIFIC: Lucent Technologies Singapore Pte. Ltd., 750D Chai Chee Road #07-06, Chai Chee Industrial Park, Singapore 469004 Tel. (65) 240 8041, FAX (65) 240 8438 CHINA: Lucent Technologies (China) Co. Ltd., SCITECH Place No. 22 Jian Guo Man Wai Avenue, Beijing 100004, PRC Tel. (86) 10-6522 5566 ext. 4187, FAX (86) 10-6512 3694 JAPAN: Lucent Technologies Japan Ltd., Mori Building No. 21, 4-33, Roppongi 1-chome, Minato-ku, Tokyo 106-8508, Japan Tel. (81) 3 5561 5831, FAX (81) 3 5561 1616 LATIN AMERICA: Lucent Technologies Inc., Room 416, 2333 Ponce de Leon Blvd., Coral Gables, FL 33134, USA Tel. +1-305-569-4722, FAX +1-305-569-3820 EUROPE: Data Requests: DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148 Technical Inquiries:GERMANY: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Ascot), FRANCE: (33) 1 40 83 68 00 (Paris), SWEDEN: (46) 8 594 607 00 (Stockholm), FINLAND: (358) 9 3507670 (Helsinki), ITALY: (39) 02 6608131 (Milan), SPAIN: (34) 91 807 1441 (Madrid) Lucent Technologies Inc. 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. 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