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CUI Inc │ SERIES: VQB75W │ DESCRIPTION: DC-DC CONVERTER date 03/18/2013 │ 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
remote on/off
1
lter PI type
Notes: 1. logic compatibility, open collector ref to -input
for positive logic
Module ON, >3.5~75 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 ±1.5 %
transient response
75~100% step load change
recovery time
error band ±5
500 µs
%Vout
adjustability
2
±10 %
switching frequency 100% load, input voltage range 300 kHz
temperature coefcient ±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 %
over current protection % nominal output current 110 140 %
short circuit protection continuous
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 tested at 500 Vdc 100 MΩ
RoHS compliant yes
ENVIRONMENTAL
parameter conditions/description min typ max units
case operating temperature -40 100 °C
storage temperature -55 105 °C
thermal shutdown case temp. 105 °C
For more information, please visit the product page.
