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Absolute Maximum Ratings
Data Sheet
24V Input Micro Family
DC-DC Converter Module
Features
DC input range: 18 - 36 V
Isolated output
Operation to 16 V at 75% power
after startup
Input surge withstand: 50 V for 100 ms
DC output: 3.3 – 48 V
Programmable output: 10 to 110%
Regulation: ±0.4% no load to full load
Efficiency: Up to 89%
Maximum operating temp: 100 °C, full load
Power density: up to 60 W per cubic inch
Height above board: 0.43 in. (10,9 mm)
Parallelable, with N+M fault tolerance
Low noise ZCS/ZVS architecture
RoHS Compliant (with F or G pin option)
Product Overview
These DC-DC converter modules use
advanced power processing, control and
packaging technologies to provide the
performance, flexibility, reliability and cost
effectiveness of a mature power component.
High frequency ZCS/ZVS switching
provides high power density with low
noise and high efficiency.
Applications
Industrial and process control, distributed
power, medical, ATE, communications,
defense, aerospace
For details on proper operation please refer
to the Design Guide & Applications Manual
for Maxi, Mini, Micro Family.
Parameter Rating Unit Notes
+In to -In voltage -0.5 to +53 Vdc
PC to -In voltage -0.5 to +7.0 Vdc
PR to -In voltage -0.5 to +7.0 Vdc
SC to -Out voltage -0.5 to +1.5 Vdc
Isolation voltage
in to out 3000 Vrms Test voltage
in to base 1500 Vrms Test voltage
out to base 500 Vrms Test voltage
Operating Temperature -55 to +100 °C M-Grade
Storage Temperature -65 to +125 °C M-Grade
Pin soldering temperature 500 (260) °F (°C) <5 sec; wave solder
750 (390) °F (°C) <7 sec; hand solder
Mounting torque 5 (0.57) in-lbs (N-m) 6 each
Output Voltage
3 V 3 = 3.3 V
5= 5 V
8= 8 V
12 = 12 V
15 = 15 V
24 = 24 V
28 = 28 V
36 = 36 V
48 = 48 V
Output Power
Vout Pout
3.3 V 75 W, 50 W
5 V 125 W, 100 W, 50 W
8 V 100 W
12 V 150 W, 100 W, 50 W
15 V 150 W, 100 W, 50 W
24 V 150 W,100 W, 50 W
28 V 150 W, 100 W, 50 W
36 V 100 W, 50 W
48 V 150 W, 100 W, 50 W
Shown actual size:
2.28 x 1.45 x 0.5 in
57,9 x 36,8 x 12,7 mm
Part Numbering
e.g. V24C12T100BL2
V24CB
Product Grade Temperatures (°C)
Grade Operating Storage
E=
-
10 to +100
-
20 to +125
C=
-
20 to +100
-
40 to +125
T=
-
40 to +100
-
40 to +125
H=
-
40 to +100
-
55 to +125
M=
-
55 to +100
-
65 to +125
Pin Style Finish
Blank: Short Tin/Lead
L: Long Tin/Lead
S: Short ModuMate Gold
N: Long ModuMate Gold
F: Short RoHS Gold
G: Long RoHS Gold
Baseplate
Blank: Slotted
2: Threaded
3: Through-hole
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Parameter Min Typ Max Unit Notes
Operating input voltage 18 24 36 Vdc
Input surge withstand 50 Vdc <100 ms
Undervoltage turn-on 17.5 17.9 Vdc
Undervoltage turn-off 14.8 15.3 Vdc Modules will operate to 16 Vin after startup at >17.9 V.
Below 18 V, available power is reduced to 75% of max
rating.
Overvoltage turn-off/on 36.3 37.8 39.6 Vdc
Disabled input current 4.0 mA PC pin low
Parameter Min Typ Max Unit Notes
Output voltage setpoint ±1 % Vout nom. Nominal input; full load; 25 °C
Line regulation ±0.02 ±0.20 % 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
Programming range % Of nominal output voltage. For trimming below 90%
10 110 of nominal, a minimum load of 10% of maximum
rated power may be required.
+Out to –Out — Absolute Maximum Ratings
3.3 V -0.5 to 4.7 Vdc Externally applied
5 V -0.5 to 7.0 Vdc Externally applied
8 V -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
36 V -0.5 to 47.1 Vdc Externally applied
48 V -0.5 to 62.9 Vdc Externally applied
MODULE INPUT SPECIFICATIONS
MODULE OUTPUT SPECIFICATIONS
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.
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.
Parameter Min Typ Max Unit
Baseplate to sink; flat, greased surface 0.24 °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
Thermal Resistance and Capacity
MODULE FAMILY ELECTRICAL CHARACTERISTICS
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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
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 MΩSee Fig. 3, converter off or fault mode
PR emitter amplitude 5.7 5.9 6.1 Volts PR load >30 Ω, <30 pF
PR emitter current 150 mA
PR receiver impedance 375 500 625 Ω25 °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 Ω
SC capacitance 0.033 µF
SC module alarm 0 Vdc With open trim; referenced toSense. See Fig. 7
Parameter Min Typ Max Unit Notes
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 MΩin to out, in to baseplate, out to baseplate
Weight (E, C, T grade) 1.9 2.1 2.3 ounces
(52.8) (59.3) (65.8) (grams)
Weight (H, M grade) 2.1 2.3 2.5 ounces
(58.7) (65.2) (71.7) (grams)
Temperature limiting 100 115 °C See Figs. 3 and 5. Do not operate coverter >100 C.
Agency approvals cURus, cTÜVus, CE UL60950-1, EN60950-1, CSA60950-1, IEC60950-1.
With appropriate fuse in series with the +Input
MODULE CONTROL SPECIFICATIONS
MODULE GENERAL SPECIFICATIONS
* Isolation test voltage, 1 minute or less.
Note:
Specifications are subject to change without notice.
MODULE FAMILY ELECTRICAL CHARACTERISTICS (CONT.)
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Parameter Min Typ Max Unit Notes
Efficiency 78.0 79.0 % Nominal input; full load; 25°C
Ripple and noise 140 175 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 46Watts No load
Load regulation ±0.02 ±0.4 % No load to full load; nominal input
Load current 0 22.72 Amps
Current limit 23.1 26.1 30.7 Amps Output voltage 95% of nominal
Short circuit current 15.8 26.1 30.7 Amps Output voltage <250 mV
MODULE SPECIFIC OPERATING SPECIFICATIONS
3.3 Vout, 75 W (e.g. V24C3V3C75BL)
Parameter Min Typ Max Unit Notes
Efficiency 75.0 79.2 % Nominal input; full load; 25 °C
Ripple and noise 240 300 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 1.6 3 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 15.15 Amps
Current limit 15.5 17.5 20.6 Amps Output voltage 95% of nominal
Short circuit current 10.6 17.5 20.6 Amps Output voltage <250 mV
3.3 Vout, 50 W (e.g. V24C3V3C50BL)
Parameter Min Typ Max Unit Notes
Efficiency 83.0 84.0 % Nominal input; full load; 25 °C
Ripple and noise 100 125 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 3.2 4.8 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 20 Amps
Current limit 20.4 23 27 Amps Output voltage 95% of nominal
Short circuit current 2 23 27 Amps Output voltage <250 mV
5 Vout, 100 W (e.g. V24C5C100BL)
Parameter Min Typ Max Unit Notes
Efficiency 82.6 84.1 % Nominal input full load 25 °C
Ripple and noise 150 188 mV p-p Nominal input full load 20 MHz bandwidth
Output OVP setpoint 6.0 6.25 6.5 Volts 25 °C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 4.3 5.3 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load nominal input
Load current 0.0 25.0 Amps
Current limit 25.5 28.8 33.8 Amps Output voltage 95% of nominal
Short circuit current 17.5 28.8 33.8 Amps Output voltage <250 mV
5 Vout, 125 W (e.g. V24C5C125BL) Safety Approvals Pending
Parameter Min Typ Max Unit Notes
Efficiency 83.0 84.5 % Nominal input; full load; 25 °C
Ripple and noise 80 100 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 6.03 6.25 6.47 Volts 25 °C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 1.3 2.1 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 10 Amps
Current limit 10.2 11.5 13.5 Amps Output voltage 95% of nominal
Short circuit current 2 11.5 13.5 Amps Output voltage <250 mV
5 Vout, 50 W (e.g. V24C5C50BL)
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Parameter Min Typ Max Unit Notes
Efficiency 86.9 88.4 % Nominal input full load 25 °C
Ripple and noise 170 212 mV p-p Nominal input full load 20 MHz bandwidth
Output OVP setpoint 13.8 14.3 14.8 Volts 25 °C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 3.7 4.5 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load nominal input
Load current 0 12.5 Amps
Current limit 12.8 14.4 16.9 Amps Output voltage 95% of nominal
Short circuit current 8.8 14.4 16.9 Amps Output voltage <250 mV
12 Vout, 150 W (e.g. V24C12C150BL) Safety Approvals Pending
Parameter Min Typ Max Unit Notes
Efficiency 84.3 86.0 % Nominal input; full load; 25 °C
Ripple and noise 145 182 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 3 3.4 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 12.5 Amps
Current limit 12.7 14.4 16.9 Amps Output voltage 95% of nominal
Short circuit current 8.75 14.4 16.9 Amps Output voltage <250 mV
8 Vout, 100 W (e.g. V24C8C100BL)
Parameter Min Typ Max Unit Notes
Efficiency 83.8 85.8 % Nominal input; full load; 25 °C
Ripple and noise 209 262 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 4.4 6.1 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 8.33 Amps
Current limit 8.5 9.59 10.9 Amps Output voltage 95% of nominal
Short circuit current 1.09 9.59 10.9 Amps Output voltage <250 mV
12 Vout, 100 W (e.g. V24C12C100BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.0 88.1 % Nominal input; full load; 25 °C
Ripple and noise 80 100 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 1.8 2.6 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 4.17 Amps
Current limit 4.25 4.8 5.63 Amps Output voltage 95% of nominal
Short circuit current 2.91 4.8 5.63 Amps Output voltage <250mV
12 Vout, 50 W (e.g. V24C12C50BL)
MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
Parameter Min Typ Max Unit Notes
Efficiency 87.8 89.3 % Nominal input full load 25 °C
Ripple and noise 152.0 190.0 mV p-p Nominal input full load 20 MHz bandwidth
Output OVP setpoint 17.1 17.8 18.4 Volts 25 °C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 3.9 5.0 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load nominal input
Load current 0.0 10.0 Amps
Current limit 10.2 11.5 13.5 Amps Output voltage 95% of nominal
Short circuit current 7.0 11.5 13.5 Amps Output voltage <250 mV
15 Vout, 150 W (e.g. V24C15C150BL) Safety Approvals Pending
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MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
Parameter Min Typ Max Unit Notes
Efficiency 87.0 88.6 % 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 23Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 2.08 Amps
Current limit 2.12 2.39 2.81 Amps Output voltage 95% of nominal
Short circuit current 1.45 2.39 2.81 Amps Output voltage <250mV
24 Vout, 50 W (e.g. V24C24C50BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.5 88.5 % Nominal input; full load; 25 °C
Ripple and noise 160 200 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 1.8 2.6 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 3.33 Amps
Current limit 3.39 3.83 4.5 Amps Output voltage 95% of nominal
Short circuit current 2.33 3.83 4.5 Amps Output voltage <250mV
15 Vout, 50 W (e.g. V24C15C50BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.0 88.0 % Nominal input; full load; 25 °C
Ripple and noise 70 88 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 3.6 5.4 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 4.17 Amps
Current limit 4.25 4.8 5.67 Amps Output voltage 95% of nominal
Short circuit current 2.91 4.8 5.42 Amps Output voltage <250 mV
24 Vout, 100 W (e.g. V24C24C100BL)
Parameter Min Typ Max Unit Notes
Efficiency 88.0 89.0 % Nominal input; full load; 25 °C
Ripple and noise 100 125 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 4.6 7 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 6.67 Amps
Current limit 6.8 7.67 8.67 Amps Output voltage 95% of nominal
Short circuit current 4.66 7.67 8.67 Amps Output voltage <250 mV
15 Vout, 100 W (e.g. V24C15C100BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.3 88.3 % Nominal input; full load; 25 °C
Ripple and noise 100 150 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 4.0 5.0 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0.0 6.3 Amps
Current limit 6.4 7.2 8.4 Amps Output voltage 95% of nominal
Short circuit current 4.4 7.2 8.4 Amps Output voltage <250 mV
24 Vout, 150 W (e.g. V24C24C150BL) Safety Approvals Pending
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Parameter Min Typ Max Unit Notes
Efficiency 88.0 89.0 % Nominal input; full load; 25 °C
Ripple and noise 85 107 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 3.3 5 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 3.57 Amps
Current limit 3.64 4.12 5 Amps Output voltage 95% of nominal
Short circuit current 0.5 4.12 5 Amps Output voltage <250 mV
28 Vout, 100 W (e.g. V24C28C100BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.5 89.0 % Nominal input; full load; 25 °C
Ripple and noise 80 100 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 1.8 2.7 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 1.78 Amps
Current limit 1.82 2.06 2.42 Amps Output voltage 95% of nominal
Short circuit current 1.25 2.06 2.42 Amps Output voltage <250mV
28 Vout, 50 W (e.g. V24C28C50BL)
Parameter Min Typ Max Unit Notes
Efficiency 86.0 87.1 % Nominal input; full load; 25 °C
Ripple and noise 32 40 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 3.7 4.3 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 2.78 Amps
Current limit 2.83 3.2 3.76 Amps Output voltage 95% of nominal
Short circuit current 1.94 3.2 3.76 Amps Output voltage <250 mV
36 Vout, 100 W (e.g. V24C36C100BL)
Parameter Min Typ Max Unit Notes
Efficiency 84.0 84.9 % Nominal input; full load; 25 °C
Ripple and noise 27 34 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 1.8 2.3 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 1.39 Amps
Current limit 1.41 1.6 1.88 Amps Output voltage 95% of nominal
Short circuit current 0.97 1.6 1.88 Amps Output voltage <250 mV
36 Vout, 50 W (e.g. V24C36C50BL)
MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
Parameter Min Typ Max Unit Notes
Efficiency 88.0 89.0 % Nominal input; full load; 25 °C
Ripple and noise 100 150 mV p-p; Nominal input; full load; 20 MHz bandwidth
Output OVP setpoint 31.6 32.7 33.8 Volts 25 °C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 4.2 6.2 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 5.4 Amps
Current limit 5.5 6.2 7.2 Amps Output voltage 95% of nominal
Short circuit current 3.8 6.2 7.2 Amps Output voltage <250 mV
28 Vout, 150 W (e.g. V24C28C150BL) Safety Approvals Pending
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Parameter Min Typ Max Unit Notes
Efficiency 86.0 87.2 % Nominal input; full load; 25 °C
Ripple and noise 120 150 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 2.1 3 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 1.04 Amps
Current limit 1.06 1.2 1.41 Amps Output voltage 95% of nominal
Short circuit current 0.72 1.2 1.41 Amps Output voltage <250 mV
48 Vout, 50 W (e.g. V24C48C50BL)
MODULE SPECIFIC OPERATING SPECIFICATIONS (CONT.)
Parameter Min Typ Max Unit Notes
Efficiency 86.2 87.7 % Nominal input; full load; 25 °C
Ripple and noise 100 125 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 35Watts No load
Load regulation ±0.02 ±0.2 % No load to full load; nominal input
Load current 0 2.08 Amps
Current limit 2.12 2.4 2.81 Amps Output voltage 95% of nominal
Short circuit current 1.46 2.4 2.81 Amps Output voltage <250 mV
48 Vout, 100 W (e.g. V24C48C100BL)
Parameter Min Typ Max Unit Notes
Efficiency 87.9 88.9 % Nominal input full load 25 °C
Ripple and noise 100 150 mV p-p Nominal input full load 20 MHz bandwidth
Output OVP setpoint 53.8 55.7 57.6 Volts 25 °C; recycle input voltage or PC to restart (>100 ms off)
Dissipation, standby 3.7 5.7 Watts No load
Load regulation ±0.02 ±0.2 % No load to full load nominal input
Load current 0.0 3.1 Amps
Current limit 3.2 3.8 4.2 Amps Output voltage 95% of nominal
Short circuit current 2.2 3.8 4.2 Amps Output voltage <250 mV
48 Vout, 150 W (e.g. V24C28C150BL) Safety Approvals Pending
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+IN
PC
PR
–IN
+OUT
SC
–OUT
C3*
4.7nF
C2*
4.7nF
For C1 – C5, keep leads and connections short.
C5*
4.7nF
C4*
4.7nF
F1*
C1*
0.2µF
Figure 1 Basic module operation requires fusing, grounding, bypassing capacitors.
* See Maxi, Mini, Micro Design Guide.
BASIC MODULE OPERATION
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.
Also at vicorpower.com
PowerBench online configurators
Over 20 Application Notes
Online calculators – thermal, trimming, hold-up
PDF data sheets for ALL Vicor products
CLICK HERE TO VIEW
DESIGN GUIDE
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Module Enable/Disable
The module may be disabled by pulling PC to 0 V (2.3 V
max) with respect to the –Input. This may be done with an
open collector transistor, relay, or optocoupler. Converters
may be disabled with a single transistor or relay either directly
or via “OR’ing” diodes for 2 or more converters. See Figure 2.
Primary Auxiliary Supply
During normal operation only, the PC Pin can source 5.7 V @
1.5 mA. In the example shown in Figure 4, PC powers a mod-
ule enabled LED.
Module Alarm
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,
Input Undervoltage) 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 nor-
mal state after the fault has been cleared. See Figures 3 and 5.
Disable
Disable = PC < 2.3 V
+IN
PC
PR
–IN
Figure 2 Module enable/disable.
Figure 4 LED on-state indicator.
4 kΩ
"Module
Enabled"
+IN
PC
PR
–IN
Optocoupler +IN
PC
PR
–IN
4 k
Alarm
1.00 V
+OUT
SC
–OUT
Comparator
Input Undervoltage
Input Overvoltage [a]
Over Temperature
Module Faults
2-20 ms typ.
f(VIN)
Auto
Restart
5.7 Vdc
(0-3 mA)
50 Ω
SW2 SW3
1.23
Vdc
6 K
1 K
SW1
SW1, 2, & 3 shown
in "Fault" position
+OUT
SC
–OUT
+IN
PC
PR
–IN
[a] Not applicable for 300 Vdc Input family
1 M
Figure 3 PC/SC module alarm logic.
Figure 6 Isolated on-state indicator.
2-20 ms typ.
Fault
SC
PC
1.23 V
5.7 V 40 µs typ.
Figure 5 PC/SC module alarm timing.
Figure 7 Secondary side on-state indicator.
PRIMARY CONTROL - PC PIN
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Parallel Operation
The PR pin supports paralleling for increased power with N+1
(N+M) redundancy. 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:
AC coupled single-wire interface. All PR pins are connected
to a single communication bus through 0.001 µF (500 V)
capacitors. This interface supports current sharing and is fault
tolerant except for the communication bus. Up to three
converters may be paralleled by this method. See Figure 9.
Transformer coupled interface. For paralleling four or more
converters a transformer coupled interface is required. See
Figure 10.
For details on parallel operation please refer to the
Design Guide & Applications Manual for Maxi, Mini, Micro Family.
Figure 9 AC coupled single-wire interface.
* See Maxi, Mini, Micro Design Guide.
+IN
PC
PR
–IN
+IN
PC
PR
–IN
Module 2
Module 1
T1
T2
+
0.2 µF
0.2 µF
Parallel
Bus
4.7 nF
4.7 nF
4.7 nF
4.7 nF
Z1*
Z1*
Figure 10 Transformer-coupled interface.
PARALLEL BUS - PR PIN
Output Voltage Programming
The output voltage of the converter can be adjusted or
programmed via fixed resistors, potentiometers or voltage
DACs. See Figure 8.
Figure 8 Output voltage trim down and trim up circuit.
Load
RD
Trim Down
Error
Amp
1 kΩ
1.23 V
0.033 μF
+OUT
SC
–OUT
1,000 Vout
Vnom – Vout
RD (ohms) =
1,000 (Vout –1.23) Vnom
1.23 (Vout – Vnom)
RU (ohms) = – 1,000
RU
Trim Up
Trim Down
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.
2.The trim down resistor must be connected between the SC
and pins. Do not bypass the SC pin directly with a
capacitor.
Trim Up
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 up resistor must be connected between the SC
and pins. Do not bypass the SC pin directly with a
capacitor.
3.Do not trim the converter above maximum trim range
(typically +10%) or the output over voltage protection
circuitry may be activated.
SECONDARY CONTROL - SC PIN
Trim resistor values calculated automatically:
On-line calculators for trim resistor values are available on the
vicor website at:
asp.vicorpower.com/calculators/calculators.asp?calc=1
Resistor values can be calculated for fixed trim up, fixed trim
down and for variable trim up or down.
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++
++
R1
R2 U1 R3
2.55 k
R4
R5
1.00 k U2
TLV431C1
R7 21.0 k
C2
0.22 µF R8
4.02 k
C3 R9
R10
1.24 k
U3
LM10
+S
–S
+Out
SC
–Out
R Load
PS2701
R11
36.5 k R6
1.65 k 470 pF 200 mV
Vcc
Gnd
See Component Selection section below.
+OUT
SC
–OUT
L
O
A
D
Plane
Ground
Plane
Module #1
Designated
Master
Module #2
trimmed
down 2 %
Module #3
trimmed
down 4 %
+OUT
SC
–OUT
+OUT
SC
–OUT
The +Out and –Out
power buses should be
designed to minimize
and balance parasitic
impedance from each
module output to the
load.
At the discretion of the
power system designer,
a subset of all modules
within an array may be
configured as slaves by
connecting SC to –Out.
Do not use output
OR’ing diodes with
MicroMods.
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.
Please consult with the Micro Family Isolated Remote Sense Application Note
for additional information.
Figure 12 Voltage drop compensation.Figure 11 N+1 module array output connections.
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.
V24C12T100BN2
— Long ModuMate Pins
PIN STYLES*
PARALLEL BUS /
VOLTAGE DROP COMPENSATION
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23
6
1
7
4
5
PLATED
THRU HOLE
DIA
±0,08
*DENOTES TOL =
0.133
3,38
1.734**
44,04
.400*
10,16
1.090**
27,69
0.145*
3,68
0.800*
20,32
0.525*
13,34
0.275*
6,99
2.000*
50,80
0.06
1,5
R (4X)
INBOARD
SOLDER
MOUNT
SHORT PIN STYLE
0.094 ±0.003
2,39 ±0,08
0.43
10,9
(7X)
**PCB WINDOW
PCB THICKNESS 0.062 ±0.010
1,57 ±0,25
0.53
13,5
ONBOARD
SOLDER
MOUNT
LONG PIN STYLE
0.094 ±0.003
2,39 ±0,08
±0.003
Converter Pins
No. Function Label
1 +In +
2Primary PC
Control
3 Parallel PR
4 –In
5 –Out
6Secondary SC
Control
7 +Out +
Unless otherwise specified,
dimensions are in inches
mm
Decimals Tol. Angles
0.XX ±0.01
±0.25 ±1°
0.XXX ±0.005
±0.127
PINS STYLES
SOLDER:TIN/LEAD PLATED
MODUMATE: GOLD PLATED COPPER
RoHS: GOLD PLATED COPPER
ALUMINUM
BASEPLATE
ALL MARKINGS
THIS SURFACE
FOR SOLDERING METHODS AND PROCE-
DURES PLEASE REFER TO THE MAXI, MINI,
MICRO DESIGN GUIDE.
Figure 13 Module outline
Figure 14 PCB mounting specifications
MECHANICAL DRAWINGS
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accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom
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Tel: 800-735-6200
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