Datasheet

cui.com
CUI Inc │ SERIES: PQM3-M │ DESCRIPTION: DC-DC CONVERTER date 05/14/2014 │ page 2 of 6
INPUT
parameter conditions/description min typ max units
operating input voltage
12 V input models
24 V input models
48 V input models
9
18
36
12
24
48
18
36
75
Vdc
Vdc
Vdc
start-up voltage
12 V input models
24 V input models
48 V input models
4.5
11
24
8
16
33
9
18
36
Vdc
Vdc
Vdc
surge voltage
for maximum of 1 second
12 V input models
24 V input models
48 V input models
-0.7
-0.7
-0.7
25
50
100
Vdc
Vdc
Vdc
lter pi lter
OUTPUT
parameter conditions/description min typ max units
line regulation full load, input voltage from low to high ±0.2 ±0.4 %
load regulation 5% to 100% load ±0.2 ±0.75 %
voltage accuracy 5% to 100% load ±1 ±3 %
no-load output voltage accuracy
5V models
all other models
±1.5
±1.5
±5
±3
%
%
switching frequency 100% load, nominal input voltage (PFM mode) 350 KHz
transient recovery time 25% load step change 0.5 1 ms
transient response deviation 25% load step change ±2 ±5 %
temperature coeffecient 100% load ±0.02 ±0.03 %/°C
PROTECTIONS
parameter conditions/description min typ max units
short circuit protection continuous, automatic recovery
SAFETY AND COMPLIANCE
parameter conditions/description min typ max units
isolation voltage for 1 minute at 1 mA max. 1,500 Vdc
isolation resistance at 500 Vdc 1,000 MΩ
conducted emissions CISPR22/EN55022, class B (external circuit required, see Figure 1-b)
radiated emissions CISPR22/EN55022, class B (external circuit required, see Figure 1-b)
ESD IEC/EN61000-4-2, class B, contact ± 4kV
radiated immunity IEC/EN61000-4-3, class A, 10V/m
EFT/burst IEC/EN61000-4-4, class B, ± 2kV (external circuit required, see Figure 1-a)
surge IEC/EN61000-4-5, class B, ± 2kV (external circuit required, see Figure 1-a)
conducted immunity IEC/EN61000-4-6, class A, 3 Vr.m.s
voltage dips & interruptions IEC/EN61000-4-29, class B, 0%-70%
MTBF as per MIL-HDBK-217F @ 25°C 1,000,000 hours
RoHS 2011/65/EU
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