Datasheet

cui.com
CUI Inc │ SERIES: VHB75W │ DESCRIPTION: DC-DC CONVERTER date 04/01/2013 │ page 2 of 4
INPUT
parameter conditions/description min typ max units
operating input voltage
9
18
24
48
36
75
Vdc
Vdc
under voltage lockout
power up
power down
24 V input
48 V input
24 V input
48 V input
8.8
17
8
16
Vdc
Vdc
Vdc
Vdc
positive logic remote on/off
1
lter PI type
Notes: 1. logic compatibility, open collector ref to -input
Module ON, >3.5 Vdc or open circuit
Module OFF, <1.8 Vdc
OUTPUT
parameter conditions/description min typ max units
line regulation measured from high line to low line ±0.2 %
load regulation measured from full load to zero load ±0.2 %
voltage accuracy ±1 %
transient response 25% step load change 500 µs
adjustability
2
±10 %
switching frequency 100% load, input voltage range 300 kHz
temperature coefcient ±0.03 %/°C
Notes: 2. trim-up: connect a resistor between the trim pin and -Sense
trim-down: connect a resistor between the trim pin and +Sense
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection %Vo 115 140 %
short circuit protection continuous
current limit % nominal output current 110 160 %
thermal shutdown case temp. 100 °C
SAFETY AND COMPLIANCE
parameter conditions/description min typ max units
isolation voltage
input to output
input to case
output to case
1,500
1,500
1,500
Vdc
Vdc
Vdc
isolation resistance 100 MΩ
safety approvals UL 60950-1
RoHS compliant yes
ENVIRONMENTAL
parameter conditions/description min typ max units
case operating temperature -40 100 °C
storage temperature -55 105 °C
humidity non-condensing 95 %
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