• rugged metal enclosure with integrated heat sink
• 4:1 input range (9~36 Vdc, 18~75 Vdc)
• single output from 3.3~48 Vdc
• 1,500 Vdc isolation
• over current, over temperature, over voltage,
and short circuit protections
• remote on/off
• efficiency up to 83%
• comes with DIN-rail mount
MODEL
VHK50W-Q24-S3R3-DIN
VHK50W-Q24-S5-DIN
VHK50W-Q24-S12-DIN
VHK50W-Q24-S15-DIN
VHK50W-Q24-S24-DIN
VHK50W-Q24-S28-DIN
VHK50W-Q24-S48-DIN
VHK50W-Q48-S3R3-DIN
VHK50W-Q48-S5-DIN
VHK50W-Q48-S12-DIN
VHK50W-Q48-S15-DIN
VHK50W-Q48-S24-DIN
VHK50W-Q48-S28-DIN
VHK50W-Q48-S48-DIN
Note:
input
voltage
range
(Vdc)
output
voltage
(Vdc)
output
current
max
(A)
output
power
max
(W)
ripple
and noise
1
max
(mVp-p)
efficiency
typ
(%)
9 ~ 36
9 ~ 36
9 ~ 36
9 ~ 36
9 ~ 36
9 ~ 36
9 ~ 36
18 ~ 75
18 ~ 75
18 ~ 75
18 ~ 75
18 ~ 75
18 ~ 75
18 ~ 75
3.3
5
12
15
24
28
48
3.3
5
12
15
24
28
48
10
10
4.16
3.33
2.08
1.78
1.04
10
10
4.16
3.33
2.08
1.78
1.04
33
50
50
50
50
50
50
33
50
50
50
50
50
50
100
100
150
150
240
280
480
100
100
150
150
240
280
480
75
79
82
82
82
82
82
76
80
83
83
83
83
83
1. Ripple and noise are measured at full load, 20 MHz BW with 10µF tantalum capacitor and 1µF ceramic capacitor across output. The 48 Vdc output models only require
the 1µF ceramic capacitor across the output.
PART NUMBER KEY
VHK50W - QXX - SXXX - DIN
Base Number
Input Voltage
Output Voltage
Remote On/Off Control
"blank" = positive logic
N = negative logic
Mounting Type
DIN = DIN-rail mount
cui.com
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VHK50W-DIN
│
DESCRIPTION:
DC-DC CONVERTER
date
06/16/2014
│
page
2 of 9
INPUT
parameter
operating input voltage
conditions/description
24 Vdc input models
48 Vdc input models
24 Vdc input
under voltage shutdown
48 Vdc input
positive logic
CTRL
1
negative logic
filter
input fuse
Note:
1. Open collector refer to -Vin
min
9
18
typ
24
48
8.8
8
17
16
max
36
75
units
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
power up
power down
power up
power down
models ON (open circuit)
models OFF (0~0.8 Vdc)
models ON (0~0.8 Vdc)
models OFF (open circuit)
pi filter
15A time delay fuse for 24 Vin models,
8A time delay fuse for 48 Vin models
OUTPUT
parameter
conditions/description
3.3 and 5 V output models
12 V output models
15 V output models
24 V output models
28 V output models
48 V output models
measured from high line to low line
measured from full load to zero load
±10
300
25% step load change
±0.03
500
min
typ
max
10,000
4,160
3,330
2,080
1,780
1,040
±0.2
±0.2
±1
units
μF
μF
μF
μF
μF
μF
%
%
%
%
kHz
µs
%/°C
maximum capacitive load
47
line regulation
2
load regulation
2
voltage accuracy
2
adjustability
switching frequency
transient response
temperature coefficient
Note:
2. A 47 μF aluminum capacitor is required on the output for 48 Vdc output models.
PROTECTIONS
parameter
short circuit protection
over current protection
over voltage protection
over temperature protection
shutdown
restart threshold
conditions/description
continuous
% nominal output current
110
115
100
70
160
140
%
%
°C
°C
min
typ
max
units
SAFETY AND COMPLIANCE
parameter
isolation voltage
isolation resistance
RoHS
2011/65/EU (CE)
conditions/description
for 1 min: input/output; input/case; output/case
min
1,500
10
typ
max
units
Vdc
MΩ
ENVIRONMENTAL
parameter
operating temperature
storage temperature
cui.com
conditions/description
see derating curve
min
-40
-55
typ
max
85
105
units
°C
°C
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VHK50W-DIN
│
DESCRIPTION:
DC-DC CONVERTER
date
06/16/2014
│
page
3 of 9
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
4.23 x 4.01 x 2.07 (107.5 x 101.8 x 52.6 mm)
steel and aluminum extrusion
651
g
min
typ
max
units
inch
MECHANICAL DRAWING
units: inch[mm]
tolerance: X.XX = ±0.02[±0.5]
X.XXX = ±0.010[±0.25]
wire range: 22~12 AWG
screw size: #6-32
mounts to TS35 rails
PIN CONNECTIONS
PIN
1
2
3
4
5
6
7
8
9
FUNCTION
+Vin
-Vin
REM
CASE
+Vo
+S
TRIM
-S
-Vo
0.67 17.0
2.76 70.0
4.09 104.0
4.23 107.5
0.07 1.8
0.18 4.5
4
9
Top View
2.07 52.6
1.50 38.0
0.50 12.8
3.62 92.0
2 - DIN RAIL CLIP
1.38 35.0
0.57 14.6
4.01 101.8
1
5
Front View
Side View
1.91 48.5
0.75 19.0
Back View
INPUT
1.18 30.0
OUTPUT
1.18 30.0
Bottom View
cui.com
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VHK50W-DIN
│
DESCRIPTION:
DC-DC CONVERTER
date
06/16/2014
│
page
4 of 9
DERATING CURVES
VHK50W Power Derating Curves At Nominal Input
120%
Natural
Convection
100%
0.5 m/S
(100LFM)
Relative Output Power - % of nominal output
80%
1.0 m/S
(200LFM)
1.5 m/S
(300LFM)
60%
2.0 m/S
(400LFM)
40%
2.5 m/S
(500LFM)
20%
3.0 m/S
(600LFM)
3.5 m/S
(700LFM)
0%
-40
55
60
65
70
75
80
85
Ambient Temperature - degrees C
TEST CONFIGURATION
Figure 1
To Oscilloscope
L1
+
Vin
-
C1
Cin
R-Load
+Vin
+Vo
Table 1
External components
L1
C1
Cin
12μH
220μF, ESR < 0.1Ω at 100 KHz
100μF, ESR < 0.1Ω at 100 KHz
-Vin
-Vo
Note:
Input reflected-ripple current is measured with an inductor L1 and Capacitor C1 to simulate source impedance.
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