1. ripple and noise are measured at 20 MHz BW with 10µF tantalum capacitor and 1µF ceramic capacitor across output
PART NUMBER KEY
VQE50W - QXX - SXX
X
Base Number
Input Voltage
Output Voltage
Remote On/Off Control
"blank" = positive logic
N = negative logic
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CUI Inc
│
SERIES:
VQE50W
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DESCRIPTION:
DC-DC CONVERTER
date
03/18/2013
│
page
2 of 4
INPUT
parameter
operating input voltage
surge voltage
conditions/description
24 V input
48 V input
100 ms max.
power up
power down
24 V input
48 V input
24
48
24
48
V
V
V
V
input
input
input
input
8.8
17
8
16
min
9
18
typ
24
48
max
36
75
50
100
units
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
under voltage lockout
positive logic remote on/off
1
filter
Notes:
PI type
1. logic compatibility, open collector ref to -input
Module ON, 3.5 ~ 75 Vdc or open circuit
Module OFF, <1.2 Vdc
2. negative logic remote on/off available
Module ON, <1.2 Vdc current limit, 110~165% nominal output
Module OFF, 3.5 ~ 75 Vdc or open circuit
OUTPUT
parameter
line regulation
load regulation
voltage accuracy
transient response
external trim adj. range
switching frequency
temperature coefficient
100% load, input voltage range
25% step load change
±10
300
±0.03
conditions/description
measured from high line to low line
measured from full load to zero load
min
typ
max
±0.2
±0.2
±1.5
500
units
%
%
%
µs
%
kHz
%/°C
PROTECTIONS
parameter
over voltage protection
short circuit protection
current limit
thermal shutdown case temp.
conditions/description
%Vo
continuous
% nominal output current
110
110
165
%
°C
min
115
typ
max
140
units
%
SAFETY AND COMPLIANCE
parameter
isolation voltage
isolation resistance
isolation capacitance
safety approvals
RoHS compliant
MTBF
UL 60950-1, CE
yes
MIL-STD-217F, GB, 25°C, full load
TBD
hours
conditions/description
input to output
input to case
output to case
min
1,500
1,500
1,500
10
1,000
typ
max
units
Vdc
Vdc
Vdc
MΩ
pF
ENVIRONMENTAL
parameter
case operating temperature
storage temperature
humidity
non-condensing
cui.com
conditions/description
min
-40
-55
typ
max
105
125
95
units
°C
°C
%
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VQE50W
│
DESCRIPTION:
DC-DC CONVERTER
date
03/18/2013
│
page
3 of 4
DERATING CURVE
100
80
60
40
20
Load (%)
-40
-20
0
20
40
60
80
105
120
Ambient Temperature (°C)
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
1.45 x 2.28 x 0.50 (36.8 x 57.9 x 12.7 mm)
aluminum
63
g
min
typ
max
units
inch
MECHANICAL DRAWING
units: inches[mm]
tolerance:
inches: X.XX = ±0.02
X.XXX = ±0.010
mm: X.XX = ±0.5
X.XXX = ±0.25
Mounting Inserts
M3x0.5 Through 4pl.
PIN CONNECTIONS
3
2
1
4
5
6
7
8
PIN
1
2
3
4
5
6
7
8
DIA 2PLACES
FUNCTION
+Vin
On/Off
-Vin
-Vo
-S
TRIM
+S
+Vo
Bottom View
min.
DIA 6PLACES
Note:
All specifications measured at 25°C, nominal input voltage, and full load unless otherwise noted.
cui.com
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VQE50W
│
DESCRIPTION:
DC-DC CONVERTER
date
03/18/2013
│
page
4 of 4
REVISION HISTORY
rev.
1.0
1.01
1.02
description
initial release
added negative logic option to part number key, updated derating curve
updated spec
date
08/22/2012
03/04/2013
03/18/2013
The revision history provided is for informational purposes only and is believed to be accurate.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
Fax 503.612.2383
cui.com
techsupport@cui.com
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical
component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to
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