45 48Vin / 28Vout / 150Watts DC-DC Converter Module Model Number V48C28C150A* Features • • • • • • • • • • • DC input range: 36 - 75V Input surge withstand: 100V for 100ms DC output: 28V Programmable output: 10 to 110% Regulation: ±0.3% no load to full load Efficiency: 87.5% Maximum operating temperature: 100°C at full load Power density: 91W/cubic inch Height above board: 0.43 in. (10,9 mm) Parallelable, with N+M fault tolerance Low noise ZCS/ZVS architecture Shown actual size: 2.28 x 1.45 x 0.5 in 57,9 x 36,8 x 12,7 mm Typical Applications: telecommunications and distributed power systems Product Overview This DC-DC converter module uses 2nd Generation power processing, control and packaging technologies to provide the performance, flexibility and cost effectiveness expected of a mature power component. For example, a plated-cavity core transformer couples widely separated primary and secondary windings, resulting in low in-toout parasitic capacitance and noise. High frequency ZCS/ZVS switching, advanced power semiconductor packaging and thermal management provide high power density with low temperature gradients. Extensive use of silicon integration results in 1/3 the part count of a 1st Generation converter. * Part Numbering V 48 C 24 C 150 A Input Voltage 24 = 24Vin 48 = 48Vin 300 = 300Vin 375 = 375Vin A = Maxi B = Mini C = Micro Output Voltage Output Power Pin Style Product Grade Temperatures (°C) Grade Storage Operating C = - 40 to +125 - 20 to +100 T = - 40 to +125 - 40 to +100 H = - 55 to +125 - 40 to +100 M = - 65 to +125 - 55 to +100 Absolute Maximum Ratings Parameter Rating Unit +In to –In voltage -0.5 to +75.0 Vdc +In to –In voltage 100 Vdc PC to –In voltage -0.5 to +7.0 Vdc PR to –In voltage -0.5 to +7.0 Vdc +Out to –Out voltage -0.5 to +36.9 Vdc SC to –Out voltage -0.5 to +1.5 Vdc Isolation voltage (in to out) 3000 Vrms Isolation voltage (in to base) 1550 Vrms Isolation voltage (out to base) Notes <100ms 500 Vrms Storage temperature (C–Grade) -40 to +125 °C See part numbering chart on this page for other product grades. Operating temperature (C–Grade) Baseplate -20 to +100 °C Pin soldering temperature 500 (260) °F (°C) <5 sec; wave solder Pin soldering temperature 750 (390) °F (°C) <7 sec; hand solder 5 (0.57) in-lbs (N-m) Mounting torque 6 each, # 4-40 or M3 Baseplate For pin styles see page 6. Slotted baseplate (style 1) requires no designator. For threaded baseplate add a “2” to the end of the part number. For thru-hole, add a “3”. See page 7 for dimensions. Thermal Resistance and Capacity Parameter Min Baseplate to sink; flat, greased surface Typ Max 0.24 Unit °C/Watt Baseplate to sink; thermal pad (P/N 20265) 0.21 °C/Watt Baseplate to ambient 10.9 °C/Watt Baseplate to ambient; 1000 LFM 2.8 °C/Watt Thermal capacity 48 Watt-sec/°C Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 V48C28C150A DC-DC Converter Set your site on VICOR at www.vicorpower.com Rev. 5.1 Page 1 of 8 ELECTRICAL CHARACTERISTICS Electrical characteristics apply over the full operating range of input voltage, output load (resistive) and baseplate temperature, unless otherwise specified. All temperatures refer to the operating temperature at the center of the baseplate. MODULE OPERATING SPECIFICATIONS Parameter Min Typ Max Unit Operating input voltage 36 48 75 Vdc 100 Vdc <100ms Input surge withstand Notes Output voltage setpoint 27.72 28.00 28.28 Vdc Nominal input; full load; 25°C Output OVP setpoint 31.5 32.7 33.9 Vdc 25°C; recycle input voltage to restart ( 1 minute off ) 150 Watts Output power Efficiency 86.5 87.5 % At 100°C baseplate temperature Nominal input; 75% of full load; 25°C MODULE INPUT SPECIFICATIONS Parameter Min Undervoltage turn-on Typ Max Unit 34.9 35.7 Vdc Notes Undervoltage turn-off 29.4 30.5 Overvoltage turn-off/on 75.7 78.8 82.5 Vdc 3.0 4.5 Watts No load Typ Max Unit Notes Line regulation ±0.02 ±0.20 % Low line to high line; full load Load regulation ±0.06 ±0.30 % No load to full load; nominal input Temperature regulation ±0.002 ±0.005 % / °C Over operating temperature range 110 138 mV Dissipation, standby Vdc MODULE OUTPUT SPECIFICATIONS Parameter Min Ripple and noise, p-p Nominal input; full load; 20 MHz bandwidth Current limit 5.46 6.16 6.97 Amps Output voltage 95% of nominal Short circuit current 3.75 6.16 6.97 Amps Output voltage <250mV ±2 ±5 % 10 to 100% of full load 110 % Of nominal output voltage. For trimming below 90% of nominal, a minimum load of 10% of maximum rated power may be required. Power sharing accuracy Programming range 10 Note: For important information relative to applications where the converter modules are subject to continuous dynamic loading, contact Vicor applications engineering at 800-927-9474. MODULE MECHANICAL SPECIFICATIONS Baseplate Slotted (Style 1) Slotted baseplate (style 1) requires no designator. For threaded baseplate add a "2" to the end of the part number. For thru-hole add a "3". Pin style Short (Style 1) For long pin configuration add “L” to the end of the part number. See page 7 for pin dimensions. Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 V48C28C150A DC-DC Converter Set your site on VICOR at www.vicorpower.com Rev. 5.1 Page 2 of 8 ELECTRICAL CHARACTERISTICS, continued MODULE CONTROL SPECIFICATIONS Parameter Min Typ Max Unit Notes PRIMARY SIDE (PC = Primary Control; PR = Parallel) PC bias voltage current limit 5.50 1.5 5.75 2.1 6.00 3.0 Vdc mA PC current = 1.0 mA PC voltage = 5.5V PC module disable 2.3 2.6 2.9 Vdc Must be able to sink ≥4 mA. See Fig. 1 4 7 ms 0.5 Vavg UV, OV, OT, module fault. See Figs. 2 and 4 6.1 Volts PR load >30 ohms, < 30 pF PC module enable delay PC module alarm PR emitter amplitude 5.7 5.9 PR emitter current 150 PR receiver impedance 375 500 625 ohms 25°C PR receiver threshold 2.4 2.5 2.6 Volts Minimum pulse width: 20ns 12 modules Without PR buffer amplifier mA PR drive capability SECONDARY SIDE (SC = Secondary Control) SC bandgap voltage 1.21 1.23 1.25 Vdc SC resistance 990 1000 1010 ohms SC capacitance SC module alarm Referenced to –Out 0.033 µF 0 Vdc With open trim; referenced to –Out. See Fig. 6 Unit Notes MODULE GENERAL SPECIFICATIONS Parameter Min Isolation voltage (in to out) 3000 Vrms Complies with reinforced insulation requirements Isolation voltage (in to base) 1550 Vrms Complies with basic insulation requirements Isolation voltage (out to base) 500 Vrms Complies with operational insulation requirements Isolation resistance (in to out) Agency approvals Max 10 Weight Temperature limiting Typ 2.1 (60) 100 megohms 2.3(66) 115 UL, CSA, TÜV, BABT, CE, VDE Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 ounces (grams) °C See Figs. 2 and 4 UL1950, CSA950, EN60950, VDE0805, BS7002, IEC 60950. With a fuse in series with the +Input V48C28C150A DC-DC Converter Set your site on VICOR at www.vicorpower.com Rev. 5.1 Page 3 of 8 CONTROL FUNCTIONS - PC PIN Module Enable/Disable Module Alarm The module may be disabled by pulling PC below 2.3V with respect to the –Input. This may be done with an open collector transistor, relay, or optocoupler. Multiple converters may be disabled with a single transistor or relay either directly or via “OR’ing” diodes. See Figure 1. The module contains “watchdog” circuitry which monitors input voltage, operating temperature and internal operating parameters. In the event that any of these parameters are outside of their allowable operating range, the module will shut down and PC will go low. PC will periodically go high and the module will check to see if the fault (as an example, overtemperature) has cleared. If the fault has not been cleared, PC will go low again and the cycle will restart. The SC pin will go low in the event of a fault and return to its normal state after the fault has been cleared. See Figures 2 and 4. Primary Auxiliary Supply At 5.7V, PC can source up to 1.5mA. In the example shown in Figure 3, PC powers a “green” module enabled LED. Input Undervoltage Input Overvoltage Over Temperature Module Faults +In +In +Out Auto Restart Disable PC PC PR PR SW1 50Ω 2-20ms typ. f(VIN) SW3 5.7Vdc (0-3mA) 6K 1.23 Vdc –In –In SC 1K SW2 –Out SW1, 2, & 3 shown in "Fault" position Disable = PC <2.3V Figure 1—Module enable/disable. Figure 2—PC/SC module alarm logic. +In PC "Module Enabled" Fault PC 40µs typ. 5.7V 4kΩ PR –In Figure 3—LED on-state indicator. 1.23V 2-20ms typ. Figure 4—PC/SC module alarm timing. +In Optocoupler SC +Out PC SC Alarm PR 4kΩ –In Figure 5—Isolated on-state indicator. Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 –Out 1.00V Figure 6—Secondary side on-state indicator. V48C28C150A DC-DC Converter Set your site on VICOR at www.vicorpower.com Rev. 5.1 Page 4 of 8 CONTROL FUNCTIONS - SC PIN Output Voltage Programming The output voltage of the converter can be adjusted or programmed via fixed resistors, potentiometers or voltage DACs. See Figures 7 and 8. +Out +Out RU Trim Up Error Amp SC 1kΩ Load RD Trim Down 0.033µF Error Amp 1kΩ SC Load 0.033µF –Out –Out 1.23V 1.23V RD (ohms) = 1,000 Vout Vnom - Vout RU (ohms) = 1,000 (Vout-1.23) Vnom 1.23 (Vout-Vnom) –1,000 Figure 7—Output voltage trim down circuit. Figure 8—Output voltage trim up circuit. Trim Down Trim Up 1. This converter is not a constant power device – it has a constant current limit. Hence, available output power is reduced by the same percentage that output voltage is trimmed down. Do not exceed maximum rated output current. 1. The converter is rated for a maximum delivered power. To ensure that maximum rated power is not exceeded, reduce maximum output current by the same percentage increase in output voltage. 2. The trim down resistor must be connected to the –Out pin. 2. The trim up resistor must be connected to the +Out pin. 3. Do not trim the converter above maximum trim range (typically +10%) or the output over voltage protection circuitry may be activated. Trim resistor values calculated automatically: On-line calculators for trim resistor values are available on the vicor website at: vicorpower.com/tools.html. Resistor values can be calculated for fixed trim up, fixed trim down and for variable trim up or down cases for both 1st and 2nd Generation DC-DC converters. In addition to trimming information, the web site and the Applications Manual also include design tips, applications circuits, EMC suggestions, thermal design guidelines and PDF data sheets for all available Vicor products. Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 V48C28C150A DC-DC Converter Set your site on VICOR at www.vicorpower.com Rev. 5.1 Page 5 of 8 CONTROL FUNCTIONS - PR PIN Parallel Operation The PR pin supports paralleling for increased power with N+1 (N+M) redundancy and phased array capability. Modules of the same input voltage, output voltage, and power level will current share if all PR pins are suitably interfaced. Compatible interface architectures include the following: DC coupled single-wire interface. All PR pins are directly connected to one another. This interface supports current sharing but is not fault tolerant. Minus In pins must be tied to the same electric potential. See Figure 9. AC coupled single-wire interface. All PR pins are connected to a single communication bus through 0.001µF (500V) capacitors. This interface supports current sharing and is fault tolerant except for the communication bus. See Figure 10. +Out +In PC Module 1 PC 0.001µF SC PR –Out Module 2 (up to 12) PC PR SC Module 2 (up to 12) PC PR –Out –In +Out +In 0.001µF SC –Out –In Ground plane Ground plane Figure 10—AC coupled single-wire interface. Figure 9—DC coupled single-wire interface. Plane • The +Out and –Out power buses should be designed to minimize and balance parasitic impedance from each module output to the load. SC –Out +Out L O A D –Out +Out SC –Out SC –Out –In +Out +In SC Module 1 PR –In +Out +Out +In Ground Plane +Out 0.001 µF R2 SC 7 R1 6 R3 Figure 11—N+1 module array output connections. LM10 Load 1.05KΩ 8 • At the discretion of the power system designer, a subset of all modules within an array may be configured as slaves by shorting SC to –Out. • Do not use output OR’ing diodes with MicroMods. R4 2 1 3 4 200Ω 1.2KΩ –Out • This module is designed for point of load regulation, where remote sensing is not required. Active voltage drop compensator, as shown here, may be used in applications with significant distribution losses. Details of this circuit are available in the design guide. Figure 12—Voltage drop compensation. PIN STYLES * Designator Description Notes (None) Short solder Requires in-board, mounting L Long solder On-board mounting for 0.65" boards S Short ModuMate SurfMate or in-board socket mounting N Long ModuMate On-board socket mounting * Pin style designator follows the “A” after the output power and precedes the baseplate designator. Ex. V375A24C600AN — Long ModuMate Pins Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 V48C28C150A DC-DC Converter Set your site on VICOR at www.vicorpower.com Rev. 5.1 Page 6 of 8 MECHANICAL DRAWINGS MODULE OUTLINE 0.50 ±0.02 12,7 ±0,5 Converter Pins No. Function Label 1 +In + Primary 2 PC Control 3 Parallel PR 4 –In – 5 –Out – 7 0.235±.015 5,97±0,38 (REF) 0.01 6,99 0.490 ±.015 1 0.350±.015 8,89±0,38 (REF) SC 2 3 + PINS: TIN/LEAD HOT SOLDER DIP 7 12,45 ±0,38 4 0.49 12,4 0.12* 0.20** 3,1 5,08 style 2 & 3 baseplates only (4X)*** 0.275 (ALL MARKINGS THIS SURFACE) 6 Secondary Control +Out 0.800 20,32 0.525 13,34 (REF) 0.27 (2X) 6,9 ALUMINUM BASEPLATE 2.000 50,80 6 or 0.43 10,9 0.400 10,16 1.04 26,4 1.45 36,8 0.21 5,2 (REF) Threaded (Style 2) 2.28 57,9 0.65 16,5 FULL R (6X) 1.30 33,0 0.13 (6X) 3,3 5 0.080 DIA. (7X) 2,03 Slotted (Style 1) 0.09 2,3 0.10 X 45˚ 2,5 CHAMFER 1.27 32,3 R 0.54 (7X) 13,7 Pin Style 1 0.62 (7X) 15,7 Pin Style 2 0.06 (3X) 1,5 (Short Pin) Use a 4-40 Screw (6x) Torque to: 5 in-lbs 0.57 N-m 1.45 36,8 (REF.) (Long Pin) 4-40 UNC-2B (6X) or Thru Hole (Style 3) * Style 1 baseplate only ** Style 2 & 3 baseplates *** Reserved for Vicor accessories Not for mounting #30 Drill Thru (6X) (0.1285) ALL MARKINGS THIS SURFACE PCB MOUNTING SPECIFICATIONS 0.062 ±0.010 1,57 ±0,25 PCB THICKNESS ALUMINUM BASEPLATE PINS: TIN/LEAD HOT SOLDER DIPPED 0.800* INBOARD SOLDER MOUNT ONBOARD SOLDER MOUNT PIN STYLE 1 0.094 ±0.003 2,39 ±0,08 PIN STYLE 2 0.094 ±0.003 2,39 ±0,08 20,32 0.525* 13,34 PLATED THRU HOLE DIA 0.275* 6,99 0.170* 4,32 0.133 3,38 1 2 3 4 1.734** 44,04 2.000* 50,80 7 R (7X) 6 5 0.06 (4X) 1,5 .400* 10,16 1.140** 28,96 *DENOTES TOL = ±0.003 ±0,08 **PCB WINDOW 0.43 10,9 0.53 13,5 Unless otherwise specified, dimensions are in inches mm 0 Decimals 0.XX Tol. ±0.25 0.XXX Angles ±0.01 ±1° ±0.005 ±0.127 Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 V48C28C150A DC-DC Converter Set your site on VICOR at www.vicorpower.com Rev. 5.1 Page 7 of 8 Vicor’s comprehensive line of power solutions includes modular, high density DC-DC converters and accessory components, configurable power supplies, and custom power systems. Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. No license is granted by implication or otherwise under any patent or patent rights of Vicor. Vicor components are not designed to be used in applications, such as life support systems, wherein a failure or malfunction could result in injury or death. All sales are subject to Vicor’s Terms and Conditions of Sale, which are available upon request. Specifications are subject to change without notice. 45 Component Solutions for Your Power System Vicor Corporation 25 Frontage Road Andover, MA, USA 01810 Tel: 800-735-6200 Fax: 978-475-6715 Email Vicor Express: [email protected] Technical Support: [email protected] Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 V48C28C150A DC-DC Converter Rev. 5.1 Set your site on VICOR at www.vicorpower.com 09/02