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
6.10
3.0
Vdc
mA
PC current = 1.0 mA
PC voltage = 5.5V
PC module disable
PC module enable delay
PC module alarm
2.3
2.3
4
2.6
7
Vdc
ms
Must be able to sink ≥4 mA. See Fig. 1
0.5
6.1
Vavg
Volts
mA
UV, OV, OT, module fault. See Figs. 2 and 4
PR load >30 ohms, < 30 pF
PR emitter amplitude
PR emitter current
5.7
150
375
2.4
5.9
PR receiver impedance
PR receiver threshold
PR drive capability
500
2.5
625
2.6
12
ohms
Volts
modules
25°C
Minimum pulse width: 20ns
Without PR buffer amplifier
SECONDARY SIDE (SC = Secondary Control)
SC bandgap voltage
SC resistance
1.21
990
1.23
1000
0.033
0
1.25
Vdc
ohms
µF
Referenced to –Sense
1010
SC capacitance
SC module alarm
Vdc
With open trim; referenced to –Sense. See Fig. 6
MODULE GENERAL SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
Notes
Remote sense (total drop)
Isolation voltage (in to out)
Isolation voltage (in to base)
Isolation voltage (out to base)
0.5
Vdc
0.25V per leg (senses must be closed)
2000
1550
500
Vrms
Vrms
Vrms
Complies with reinforced insulation requirements
Complies with basic insulation requirements
Complies with operational insulation requirements
Isolation resistance (in to out)
Weight
10
3.7 (104)
115
megohms
4 (112) ounces (grams)
°C
Temperature limiting
100
See Figs. 2 and 4
UL60950, EN60950, CSA60950, IEC 60950.
With a fuse in series with the +Input
Agency approvals
cULus, TÜV, CE
Note: The cover is electrically conductive and may be electrically connected to the baseplate.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
V48B24C250B DC-DC Converter
Rev. 2
Page 3 of 8
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