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Data Sheet
375V Input Maxi Family
DC-DC Converter Module
Features
· DC input range: 250 425 V
· Isolated ouput
· Input surge withstand: 500 V for 100 ms
· DC output: 2 54 V
· Programmable output: 10 to 110%
· Regulation: ±0.25% no load to full load
· Efficiency: Up to 89%
· Maximum operating temp: 100°C, full load
· Power density: up to 120 W per cubic inch
· Height above board: 0.43 in. (10,9 mm)
· Parallelable, with N+M fault tolerance Shown actual size:
· Low noise ZCS/ZVS architecture 4.6 x 2.2 x 0.5 in
· RoHS Compliant (with F or G pin option) 117 x 56 x 12,7 mm
Product Overview
These DC-DC converter modules use Absolute Maximum Ratings
advanced power processing, control and
packaging technologies to provide the Parameter Rating Unit Notes
performance, flexibility, reliability and cost
+In to In voltage -0.5 to +525 Vdc
effectiveness of a mature power component.
High frequency ZCS/ZVS switching PC to In voltage -0.5 to +7.0 Vdc
provides high power density with low PR to In voltage -0.5 to +7.0 Vdc
noise and high efficiency. SC to -Out voltage -0.5 to +1.5 Vdc
-Sense to -Out voltage 1.0 Vdc
Applications
Isolation voltage
Off-line systems with PFC front ends,
in to out 3000 Vrms Test voltage
industrial and process control, distributed
power, medical, ATE, communications, in to base 1500 Vrms Test voltage
defense, aerospace out to base 500 Vrms Test voltage
For details on proper operation please refer Operating Temperature -55 to +100 °C M-Grade
to the Design Guide & Applications Manual Storage Temperature -65 to +125 °C M-Grade
for Maxi, Mini, Micro Family. 500 (260) °F (°C) < 5 sec; wave solder
Pin soldering temperature
750 (390) °F (°C) < 7 sec; hand solder
Mounting torque 5 (0.57) in-lbs (N-m) 6 each
Part Numbering
e.g. V375A12T600BL2
V3 7 5 A B
Output Power
Output Voltage Product Grade Temperatures (°C) Vout Pout Pin Style Finish Baseplate
Grade Operating Storage 2V 160 W Blank: Short Tin/Lead Blank: Slotted
2 = 2V
3 V 3 = 3.3 V E = - 10 to +100 - 20 to +125 3.3 V 200 W, 264 W L: Long Tin/Lead 2: Threaded
5 = 5V 5V 300 W, 400 W 3: Through-hole
C = - 20 to +100 - 40 to +125 S: Short ModuMate Gold
8 = 8V 8V 300 W, 400 W
12 = 12 V T = - 40 to +100 - 40 to +125 N: Long ModuMate Gold
H = - 40 to +100 - 55 to +125 12 V 400 W, 600 W F: Short RoHS Gold
15 = 15 V
24 = 24 V 15 V 400 W, 600 W
M = - 55 to +100 - 65 to +125 G: Long RoHS Gold
28 = 28 V 24 V 400 W, 600 W
32 = 32 V 28 V 400 W, 600 W
36 = 36 V 32 V 600 W
48 = 48 V 36 V 400 W, 500 W, 600 W
54 = 54 V
48 V 400 W, 600 W
54 V 600 W
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MODULE FAMILY 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 INPUT SPECIFICATIONS
Parameter Min Typ Max Unit Notes
Operating input voltage 250 375 425 Vdc
Input surge withstand 500 Vdc <100 ms
Undervoltage turn-on 242.5 247.5 Vdc
Undervoltage turn-off 204.7 212.2 Vdc
Overvoltage turn-off/on 429.2 446.3 467.5 Vdc
Disabled input current 1.1 mA PC pin low
MODULE OUTPUT SPECIFICATIONS
Parameter Min Typ Max Unit Notes
Output voltage setpoint 1 % Vout nom Nominal input; full load; 25°C
Line regulation ±0.02 ±0.2 % Low line to high line; full load
Temperature regulation ±0.002 ±0.005 % / °C Over operating temperature range
Power sharing accuracy ±2 ±5 % 10 to 100% of full load
Of nominal output voltage. For trimming below 90%
Programming range 10 110 % of nominal, a minimum load of 10% of maximum
rated power may be required.
+Out to Out, +Sense to Out -- Absolute Maximum Ratings
2V -0.5 to 3.1 Vdc Externally applied
3.3 V -0.5 to 4.7 Vdc Externally applied
5V -0.5 to 7.0 Vdc Externally applied
8V -0.5 to 10.9 Vdc Externally applied
12 V -0.5 to 16.1 Vdc Externally applied
15 V -0.5 to 20.0 Vdc Externally applied
24 V -0.5 to 31.7 Vdc Externally applied
28 V -0.5 to 36.9 Vdc Externally applied
32 V -0.5 to 41.9 Vdc Externally applied
36 V -0.5 to 47.1 Vdc Externally applied
48 V -0.5 to 62.9 Vdc Externally applied
54 V -0.5 to 70.2 Vdc Externally applied
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.
THERMAL RESISTANCE AND CAPACITY
Parameter Min Typ Max Unit
Baseplate to sink; flat, greased surface 0.08 °C/Watt
Baseplate to sink; thermal pad (P/N 20263) 0.07 °C/Watt
Baseplate to ambient 4.9 °C/Watt
Baseplate to ambient; 1000 LFM 1.1 °C/Watt
Thermal capacity 165 Watt-sec/°C
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MODULE FAMILY ELECTRICAL CHARACTERISTICS (CONT.)
MODULE CONTROL SPECIFICATIONS
Parameter Min Typ Max Unit Notes
PRIMARY SIDE (PC = Primary Control; PR = Parallel)
PC bias voltage 5.50 5.75 6.00 Vdc PC current = 1.0 mA
During normal operation
current limit 1.5 2.1 3.0 mA PC voltage = 5.5 V
PC module disable 2.3 2.6 2.9 Vdc Switch must be able to sink 4 mA. See Fig. 2
PC module enable delay 4 7 ms
PC module alarm 0.5 Vavg UV, OV, OT, module fault. See Figs. 3 and 5
PC resistance 0.9 1.0 1.1 M See Fig. 3, converter off or fault mode
PR emitter amplitude 5.7 5.9 6.1 Volts PR load >30 , < 30 pF
PR emitter current 150 mA
PR receiver impedance 375 500 625 25°C
PR receiver threshold 2.4 2.5 2.6 Volts Minimum pulse width: 20 ns
PR drive capability 12 modules Without PR buffer amplifier
SECONDARY SIDE (SC = Secondary Control)
SC bandgap voltage 1.21 1.23 1.25 Vdc Referenced to Sense
SC resistance 990 1000 1010
SC capacitance 0.033 µF
SC module alarm 0 Vdc With open trim; referenced to Sense. See Fig. 7
MODULE GENERAL SPECIFICATIONS
Parameter Min Typ Max Unit Notes
Remote sense (total drop) 0.5 Vdc 0.25 V per leg (sense leads must be connected to
respective, output terminals)
Isolation test voltage (in to out)* 3000 Vrms Complies with reinforced insulation requirements
Isolation test voltage (in to base)* 1500 Vrms Complies with basic insulation requirements
Isolation test voltage (out to base)* 500 Vrms Complies with operational insulation requirements
Isolation resistance 10 M in to out, in to baseplate, out to baseplate
6.5 7.3 8.1 ounces
Weight (E, C, T grade)
(184.3) (207.5) (230.7) (grams)
7.4 8.2 9.0 ounces
Weight (H, M grade)
(209.3) (232.5) (255.7) (grams)
Temperature limiting 100 115 °C See Figs. 3 and 5. Do not operate coverter >100C.
UL60950-1, EN60950-1, CSA60950-1, IEC60950-1.
Agency approvals cURus, cTÜVus, CE
With appropriate fuse in series with the +Input
* Isolation test voltage, 1 minute or less.
Note:
Specifications are subject to change without notice.
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MODULE SPECIFIC OPERATING SPECIFICATIONS
2 Vout, 160 W (e.g. V375A2C160BL)
Parameter Min Typ Max Unit Notes
Efficiency 72 73.7 % Nominal input; full load; 25°C
Ripple and noise 200 250 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 2.7 2.8 2.9 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 8.4 11 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 80 Amps
Current limit 81.6 92 108 Amps Output voltage 95% of nominal
Short circuit current 56 92 108 Amps Output voltage <250 mV
3.3 Vout, 264 W (e.g. V375A3V3C264BL)
Parameter Min Typ Max Unit Notes
Efficiency 79.4 81.5 % Nominal input; full load; 25°C
Ripple and noise 120 150 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 4.14 4.3 4.46 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 4.9 7.8 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 80 Amps
Current limit 81.6 92 104 Amps Output voltage 95% of nominal
Short circuit current 56 92 104 Amps Output voltage <250 mV
3.3 Vout, 200 W (e.g. V375A3V3C200BL)
Parameter Min Typ Max Unit Notes
Efficiency 78 78.9 % Nominal input; full load; 25°C
Ripple and noise 60 75 mV p-p; Nominal input; full load; 20MHz bandwidth
Output OVP setpoint 4.14 4.3 4.46 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 7.9 9.1 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 60.6 Amps
Current limit 61.8 69.7 81.9 Amps Output voltage 95% of nominal
Short circuit current 42.4 69.7 81.9 Amps Output voltage <250 mV
5 Vout, 400 W (e.g. V375A5C400BL)
Parameter Min Typ Max Unit Notes
Efficiency 80 83 % Nominal input; full load; 25°C
Ripple and noise 120 150 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 6.26 6.49 6.72 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 6.6 9 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 80 Amps
Current limit 81.6 92 108 Amps Output voltage 95% of nominal
Short circuit current 56 97 108 Amps Output voltage <250 mV
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MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
5 Vout, 300 W (e.g. V375A5C300BL)
Parameter Min Typ Max Unit Notes
Efficiency 82 83.3 % Nominal input; full load; 25°C
Ripple and noise 80 100 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 6.03 6.25 6.47 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 8.8 10.2 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 60 Amps
Current limit 61.2 69 81 Amps Output voltage 95% of nominal
Short circuit current 42 69 81 Amps Output voltage <250 mV
8 Vout, 400 W (e.g. V375A8C400BL)
Parameter Min Typ Max Unit Notes
Efficiency 81.6 82.8 % Nominal input; full load; 25°C
Ripple and noise 288 360 mV p-p; Nominal input; full load; 20MHz bandwidth
Output OVP setpoint 9.55 9.9 10.3 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 17.9 19 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 50 Amps
Current limit 51 57.5 67.5 Amps Output voltage 95% of nominal
Short circuit current 35 57.5 67.5 Amps Output voltage <250 mV
8 Vout, 300 W (e.g. V375A8C300BL)
Parameter Min Typ Max Unit Notes
Efficiency 82 83.1 % Nominal input; full load; 25°C
Ripple and noise 220 275 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 9.36 9.7 10.1 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 9.3 10.8 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Output Current 0 37.5 Amps
Current limit 38.2 43.1 50.7 Amps Output voltage 95% of nominal
Short circuit current 26.2 43.1 50.7 Amps Output voltage <250 mV
12 Vout, 600 W (e.g. V375A12C600BL)
Parameter Min Typ Max Unit Notes
Efficiency 81.5 86 % Nominal input; full load; 25°C
Ripple and noise 320 400 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 13.7 14.3 14.9 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 8.7 13 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 50 Amps
Current limit 51 57.5 67.5 Amps Output voltage 95% of nominal
Short circuit current 35 57.5 67.5 Amps Output voltage <250 mV
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MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
12 Vout, 400 W (e.g. V375A12C400BL)
Parameter Min Typ Max Unit Notes
Efficiency 85 86.6 % Nominal input; full load; 25°C
Ripple and noise 240 300 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 13.7 14.3 14.9 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 12.5 14.5 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 33.33 Amps
Current limit 33.9 38.3 45 Amps Output voltage 95% of nominal
Short circuit current 23.3 38.3 45 Amps Output voltage <250 mV
15 Vout, 600 W (e.g. V375A15C600BL)
Parameter Min Typ Max Unit Notes
Efficiency 85.5 87.5 % Nominal input; full load; 25°C
Ripple and noise 240 300 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 17.1 17.8 18.5 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 9 12 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 40 Amps
Current limit 40.8 46 52 Amps Output voltage 95% of nominal
Short circuit current 28 46 52 Amps Output voltage <250 mV
15 Vout, 400 W (e.g. V375A15C400BL)
Parameter Min Typ Max Unit Notes
Efficiency 84 85.3 % Nominal input; full load; 25°C
Ripple and noise 300 375 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 17.1 17.8 18.5 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 12.3 14 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 26.67 Amps
Current limit 27.2 30.7 36.1 Amps Output voltage 95% of nominal
Short circuit current 18.6 30.7 36.1 Amps Output voltage <250 mV
24 Vout, 600 W (e.g. V375A24C600BL)
Parameter Min Typ Max Unit Notes
Efficiency 85.5 87.5 % Nominal input; full load; 25°C
Ripple and noise 80 100 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 27.1 28.1 29.1 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 9.3 10.9 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 25 Amps
Current limit 25.5 28.8 33.8 Amps Output voltage 95% of nominal
Short circuit current 17.5 28.8 37.5 Amps Output voltage <250 mV
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MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
24 Vout, 400 W (e.g. V375A24C400BL)
Parameter Min Typ Max Unit Notes
Efficiency 86.5 87.7 % Nominal input; full load; 25°C
Ripple and noise 120 150 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 27.1 28.1 29.1 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 13.2 15 Watts No load
Load regulation ±0 ±0.2 % No load to full load; nominal input
Load current 0 16.67 Amps
Current limit 17 19.2 22.6 Amps Output voltage 95% of nominal
Short circuit current 5 19.2 22.6 Amps Output voltage <250 mV
28 Vout, 600 W (e.g. V375A28C600BL)
Parameter Min Typ Max Unit Notes
Efficiency 86.8 87.8 % Nominal input; full load; 25°C
Ripple and noise 120 150 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 31.5 32.7 33.9 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 9.5 10.2 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 21.43 Amps
Current limit 21.8 24.7 28.9 Amps Output voltage 95% of nominal
Short circuit current 14 24.7 28.9 Amps Output voltage <250 mV
28 Vout, 400 W (e.g. V375A28C400BL)
Parameter Min Typ Max Unit Notes
Efficiency 86.5 88 % Nominal input; full load; 25°C
Ripple and noise 160 200 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 31.5 32.7 33.9 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 10.7 12 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 14.29 Amps
Current limit 14.5 16.4 19.4 Amps Output voltage 95% of nominal
Short circuit current 10 16.4 19.4 Amps Output voltage <250 mV
32 Vout, 600 W (e.g. V375A32C600BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.1 88.1 % Nominal input; full load; 25°C
Ripple and noise 168 210 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 35.9 37.3 38.7 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 11.6 12.1 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 18.75 Amps
Current limit 19.1 21.6 24.5 Amps Output voltage 95% of nominal
Short circuit current 13.1 21.6 24.5 Amps Output voltage <250 mV
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MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
36 Vout, 600 W (e.g. V375A36C600BL)
Parameter Min Typ Max Unit Notes
Efficiency 86.8 88.6 % Nominal input; full load; 25°C
Ripple and noise 216 270 mV p-p; Nominal input; full load; 20MHz bandwidth
Output OVP setpoint 40.4 41.9 43.4 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 12.6 14.7 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 16.67 Amps
Current limit 17 19.2 22.6 Amps Output voltage 95% of nominal
Short circuit current 11.6 19.2 22.6 Amps Output voltage <250 mV
36 Vout, 500 W (e.g. V375A36C500BL)
Parameter Min Typ Max Unit Notes
Efficiency 85.8 88 % Nominal input; full load; 25°C
Ripple and noise 200 250 mV p-p; Nominal input; full load; 20MHz bandwidth
Output OVP setpoint 40.4 41.9 43.4 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 14.5 16 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 13.89 Amps
Current limit 14.5 16 18 Amps Output voltage 95% of nominal
Short circuit current 8.5 16 18 Amps Output voltage <250 mV
36 Vout, 400 W (e.g. V375A36C400BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.6 88.6 % Nominal input; full load; 25°C
Ripple and noise 150 188 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 40.4 41.9 43.4 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 12.4 13.2 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 11.11 Amps
Current limit 11.3 12.8 15 Amps Output voltage 95% of nominal
Short circuit current 7.77 12.8 15 Amps Output voltage <250 mV
48 Vout, 600 W (e.g. V375A48C600BL)
Parameter Min Typ Max Unit Notes
Efficiency 87 88.5 % Nominal input; full load; 25°C
Ripple and noise 80 100 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 53.2 55.2 57.2 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 13.5 15.0 Watts No load
Load regulation ±0.02 ±0.25 % No load to full load; nominal input
Load current 0 12.5 Amps
Current limit 12.7 14.4 16.3 Amps Output voltage 95% of nominal
Short circuit current 8 14.4 16.3 Amps Output voltage <250 mV
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MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
48 Vout, 400 W (e.g. V375A48C400BL)
Parameter Min Typ Max Unit Notes
Efficiency 87 88.3 % Nominal input; full load; 25°C
Ripple and noise 200 250 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 53.7 55.7 57.7 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 14.2 16.3 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 8.33 Amps
Current limit 8.49 9.58 11.3 Amps Output voltage 95% of nominal
Short circuit current 5.83 9.58 11.3 Amps Output voltage <250 mV
54 Vout, 600 W (e.g. V375A54C600BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.7 89.6 % Nominal input; full load; 25°C
Ripple and noise 160 200 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 60.4 62.6 64.8 Volts 25°C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 6 12 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 11.11 Amps
Current limit 11.3 12.8 15 Amps Output voltage 95% of nominal
Short circuit current 7.77 12.8 15 Amps Output voltage <250 mV
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BASIC MODULE OPERATION
C2* C4*
4.7nF 4.7nF
+IN +OUT
F1* PC
+S
SC
C1*
PR
0.2µF S
IN OUT
C3*
4.7nF C5*
4.7nF
For C1 C5, keep leads and connections short.
Figure 1 -- Basic module operation requires fusing, grounding, bypassing capacitors.
* See Maxi, Mini, Micro Design Guide.
Comprehensive Online Application Information
The Design Guide and Applications Manual includes:
· Application circuits
· Design requirements
· EMC considerations
· Current sharing in power arrays
· Thermal performance information
· Recommended soldering methods
· Accessory modules filtering, rectification, front-ends
· Mounting options
...and more.
CLICKHERE TOVIEW
DESIGN GUIDE
Also at vicorpower.com
· PowerBench online configurators
· Over 20 Application Notes
· Online calculators thermal, trimming, hold-up
· PDF data sheets for ALL Vicor products
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PRIMARY CONTROL - PC PIN
Module Enable/Disable Module Alarm
The module may be disabled by pulling PC below 2.3 V with The module contains "watchdog" circuitry which monitors
respect to the Input. This may be done with an open collec- input voltage, operating temperature and internal operating
tor transistor, relay, or optocoupler. Multiple converters may parameters. In the event that any of these parameters are
be disabled with a single transistor or relay either directly or outside of their allowable operating range, the module will
via "OR'ing" diodes. See Figure 2. 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,
Primary Auxiliary Supply PC will go low again and the cycle will restart. The SC pin
At 5.7 V, PC can source up to 1.5 mA. In the example shown will go low in the event of a fault and return to its normal
in Figure 4, PC powers a module enabled LED. state after the fault has been cleared. See Figures 3 and 5.
Input Undervoltage
+IN Input Overvoltage (See Note 1)
+OUT
+IN Auto Overtemperature
Restart Module Faults
SW1
PC PC +S
2-20 ms typ.
f (VIN)
50
SW1, 2, & 3 SC
shown in SW2 SW3 1K
PR 1M
"Fault" position S
Disable PR 5.7 Vdc
IN (0-3 mA) 1.23 OUT
Vdc 6K
IN
1 Not applicable for 300 Vdc input family
Disable = PC <2.3 V
Figure 2 -- Module enable/disable. Figure 3 -- PC/SC module alarm logic.
+IN
Fault 40 s typ.
PC 5.7 V
PC
4 k
"Module
Enabled" PR
1.23 V
IN SC 220 ms typical
Figure 4 -- LED on-state indicator. Figure 5 -- PC/SC module alarm timing.
Optocoupler +IN +OUT Comparator
PC +S
SC
4 k Alarm
PR S
1.00V
IN OUT
Figure 6 -- Isolated on-state indicator. Figure 7 -- Secondary side on-state indicator.
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SECONDARY CONTROL - SC PIN PARALLEL BUS - PR PIN
Output Voltage Programming Parallel Operation
The output voltage of the converter can be adjusted or The PR pin supports paralleling for increased power with N+1
programmed via fixed resistors, potentiometers or voltage (N+M) redundancy. Modules of the same input voltage, output
DACs. See Figure 8. voltage, and power level will current share if all PR pins are
suitably interfaced.
Compatible interface architectures include the following:
+OUT
AC coupled single-wire interface. All PR pins are connected
+S to a single communication bus through 0.001 µF (500 V)
Error Amplifier capacitors. This interface supports current sharing and is fault
Ru
Trim Up tolerant except for the communication bus. Up to three
SC converters may be paralleled by this method. See Figure 9.
+
Load
1 k
Rd Transformer coupled interface. For paralleling four or more
0.033 uF Trim Down
converters a transformer coupled interface is required. See
+
1.23 V
-S Figure 10.
100 typ.
OUT
For details on parallel operation please refer to the
Design Guide & Applications Manual for Maxi, Mini, Micro Family.
Rd (ohms) = 1,000 Vout
Vnom Vout 4.7 nF
+ +IN
RU (ohms) = 1,000 (Vout 1.23) Vnom 1,000 0.2 µF
1.23 (Vout Vnom) PC
0.001 µF Z1* Module 1
Figure 8 -- Output voltage trim down and trim up circuit.
PR
IN
Low inductance 4.7 nF
Trim Down ground plane
or bus
4.7 nF
1. This converter is not a constant power device it has a +IN
constant current limit. Hence, available output power is 0.2 µF
PC Module 2
reduced by the same percentage that output voltage is 0.001 µF Z1*
trimmed down. Do not exceed maximum rated output current. PR
IN
2. The trim down resistor must be connected between the SC
4.7 nF
and -S pins. Do not bypass the SC pin directly with a Parallel
capacitor. Bus
Figure 9 -- AC coupled single-wire interface.
Trim Up
* See Maxi, Mini, Micro Design Guide.
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 4.7 nF
output voltage. + +IN
0.2 µF PC
2. The trim up resistor must be connected between the SC T1 Module 1
Z1*
and +S pins. Do not bypass the SC pin directly with a PR
capacitor. IN
4.7 nF
3. Do not trim the converter above maximum trim range
(typically +10%) or the output over voltage protection 4.7 nF
circuitry may be activated. +IN
0.2 µF PC Module 2
T2 Z1*
Trim resistor values calculated automatically: PR
On-line calculators for trim resistor values are available on the IN
vicor website at:
asp.vicorpower.com/calculators/calculators.asp?calc=1 4.7 nF
Parallel
Resistor values can be calculated for fixed trim up, fixed trim Bus
down and for variable trim up or down.
Figure 10 -- Transformer-coupled interface.
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PARALLEL BUS OUTPUT
+OUT · The +Out and Out power buses should be designed to
+S
minimize and balance parasitic impedance from each
module output to the load.
Module 1 SC
S · The +Sense pins must be tied together to form a
OUT +Sense bus. This must be Kelvin connected to +Out
at a single point. The Sense pins should be tied
+S together to form a Sense bus. This must be Kelvin
connected to Out at a single point.
+OUT
· At the discretion of the power system designer,
+S
Module 2 Load a subset of all modules within an array may be
SC
configured as slaves by connecting SC to S.
S
OUT · OR'ing diodes may be inserted in series with the
S +Out pins of each module to provide module
output fault tolerance.
+OUT · The +Sense and -Sense leads should be routed in close
+S proximity to each other on the printed circuit board. If
Module N+1 SC
wires are used to connect the converters on a PCB to
S
an external load, the Sense leads should be twisted
together to reduce noise pickup.
OUT
Figure 11 -- N+1 module array output connections.
PINSTYLES*
Designator Description Finish Notes
(None) Short Tin/Lead Requires in-board, mounting
L Long Tin/Lead On-board mounting for 0.065" boards
S Short ModuMate Gold SurfMate or in-board socket mounting
N Long ModuMate Gold On-board socket mounting
F Short RoHS Gold Select for RoHS compliant in-board solder, socket, or SurfMate mounting
G Long RoHS Gold Select for RoHS compliant on-board solder or socket mounting
* Pin style designator follows the "B" after the output power and precedes the baseplate designator.
Ex. V48A12T500BN2 -- Long ModuMate Pins
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MECHANICAL DRAWINGS
Converter Pins
No. Function Label
1 +In +
Primary
2 PC
Control
3 Parallel PR
4 In
5 Out
6 Sense S
Secondary
7 SC
Control
8 +Sense +S
9 +Out +
Figure 13 -- Module outline
INBOARD ONBOARD ALL MARKINGS
SOLDER SOLDER
MOUNT MOUNT THIS SURFACE
SHORT PIN STYLE LONG PIN STYLE
0.062 ±0.010 0.094 ±0.003 0.094 ±0.003
PCB THICKNESS (7X)
1,57 ±0,25 2,39 ±0,08 2,39 ±0,08
PLATED 0.194 ±0.003
0.194 ±0.003
THRU HOLE (2X)
1.790** 4,93 ±0,08 4,93 ±0,08
DIA
0.06 45,47
R (4X) 0.178
1,5
4,52
1 2 3 4