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date 12/16/2013
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SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER
date 12/16/2013
page 1 of 7
FEATURES
• up to 200 W isolated output
• rugged metal enclosure with integrated heat sink
• 4:1 input range (10~36 Vdc, 18~75 Vdc)
• single output from 12~48 Vdc
• 1,500 Vdc isolation
• over current, over temperature, over voltage,
and short circuit protections
• remote on/off
• efficiency up to 88%
PART NUMBER KEY
MODEL input
voltage
output
voltage
output
current
output
power
ripple
and noise1
efciency
range
(Vdc) (Vdc)
max
(A)
max
(W)
max
(mVp-p)
typ
(%)
VHK200W-Q24-S12 10 ~ 36 12 16.7 200 150 84
VHK200W-Q24-S15 10 ~ 36 15 13.3 200 150 84
VHK200W-Q24-S24 10 ~ 36 24 8.3 200 240 84
VHK200W-Q24-S28 10 ~ 36 28 7.14 200 280 87
VHK200W-Q24-S48 10 ~ 36 48 4.2 200 480 87
VHK200W-Q48-S12 18 ~ 75 12 16.7 200 150 86
VHK200W-Q48-S15 18 ~ 75 15 13.3 200 150 86
VHK200W-Q48-S24 18 ~ 75 24 8.3 200 240 86
VHK200W-Q48-S28 18 ~ 75 28 7.14 200 280 87
VHK200W-Q48-S48 18 ~ 75 48 4.2 200 480 88
Note: 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 require a 10uF
aluminum capacitor and 1uF ceramic capacitor across the output.
2.Anexternalinputcapacitorof470μFfor24Vdcinputmodelsand47μFfor48Vdcinputmodelsisrecommendedtoreduceinputripplevoltage.
VHK200W - QXX - SXX X
Input Voltage Output Voltage
Base Number Remote On/Off Control
"blank" = positive logic
N = negative logic
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CUI Inc │ SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER date 12/16/2013 │ page 2 of 7
INPUT
parameter conditions/description min typ max units
operating input voltage 24 Vdc input models
48 Vdc input models
10
18
24
48
36
75
Vdc
Vdc
under voltage shutdown
24 Vdc input power up
power down
9.5
8.5
Vdc
Vdc
48 Vdc input power up
power down
17
16
Vdc
Vdc
CTRL1
positive logic models ON (>3.5 Vdc or open circuit)
models OFF (0~1.2 Vdc)
negative logic models ON (0~1.2 Vdc)
models OFF (>3.5 Vdc or open circuit)
lter pilter
input fuse 40A time delay fuse for 24 Vin models,
20A time delay fuse for 48 Vin models
Note: 1. Open collector refer to -Vin
OUTPUT
parameter conditions/description min typ max units
maximum capacitive load
12, 15, & 24 V output models
28 V output models
48 V output models
100
47
2,200
2,200
2,200
μF
μF
μF
line regulation2measured from low line to high line ±0.2 %
load regulation2measured from zero load to full load ±0.2 %
voltage accuracy ±1.5 %
adjustability ±10 %
switching frequency 250 kHz
transient response 25% step load change 500 µs
temperaturecoefcient ±0.03 %/°C
Note: 2.A100μFaluminumcapacitorisrequiredontheoutputforthe28Vdcoutputmodels.A47μFaluminumcapacitorisrequiredontheoutputfor48Vdcoutputmodels.
PROTECTIONS
parameter conditions/description min typ max units
short circuit protection continuous
over current protection at 90% output voltage 110 160 %
over voltage protection 115 140 %
over temperature protection shutdown 110 °C
SAFETY AND COMPLIANCE
parameter conditions/description min typ max units
isolation voltage for 1 minute: input to output; input to case;
output to case 1,500 Vdc
isolation resistance 10 MΩ
RoHS 2011/65/EU (CE)
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature see derating curve -40 85 °C
storage temperature -55 105 °C
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CUI Inc │ SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER date 12/16/2013 │ page 3 of 7
2.76[
70
.0]
4.006[
101.76
]
4.09[
104
.0]
4.23[
107.5
]
3.58[
91
.0]
Jumper
1.50[
38
.0]
MECHANICAL
parameter conditions/description min typ max units
dimensions 4.23 x 4.01 x 1.50 (107.5 x 101.76 x 38.0 mm) inch
case material steel and aluminum extrusion
weight 502 g
MECHANICAL DRAWING
PIN CONNECTIONS
PIN FUNCTION
1-Vo
2-S
3 trim
4 +S
5+Vo
6 case
7 on/off
8 -Vin
9 +Vin
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
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CUI Inc │ SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER date 12/16/2013 │ page 4 of 7
0%
20%
40%
60%
80%
100%
120%
-40 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature - degrees C
Relative Output Power - % of nominal output
Natural
Convection
0.5 m/S
(100LFM)
1.0 m/S
(200LFM)
1.5 m/S
(300LFM)
2.0 m/S
(400LFM)
2.5 m/S
(500LFM)
3.0 m/S
(600LFM)
3.5 m/S
(700LFM)
DERATING CURVES
Figure 1 Table 1
TEST CONFIGURATION
Cin
L1
To Oscilloscope
+Vin
-Vin
+Vo
-Vo
R-Load
Vi
n
+
-
Note: Inputreected-ripplecurrentismeasuredwithaninductorL1tosimulatesourceimpedance.
External components
for 24 Vdc input models
L1 1.2μH
Cin 470μF,ESR<0.2Ωat100KHz
for 48 Vdc input models
L1 12μH
Cin 47μF,ESR<0.7Ωat100KHz
VHK200W Power Derating Curves At Nominal Input
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CUI Inc │ SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER date 12/16/2013 │ page 5 of 7
DC/DC Converter
+Vo
-Vo
+Vin
C2
-Vin
C1 C3
+Vo
-Vo
CASE
+Vin
-Vin
-S
+S
C4
L1
L2
DC/DC Converter
+Vo
-Vo
+Vin
C2
-Vin
C1 C3
+Vo
-Vo
+Vin
-Vin
-S
+S
CY1
CY2
L1
Figure 2
Recommended Circuit for EN55022 Class A
(for all 12, 15, 24, & 28 Vdc output models)
Figure 3
Recommended Circuit for EN55022 Class A
(for all 48 Vdc output models)
EMC RECOMMENDED CIRCUITS
Table 2
Class A Recommended Components
Model C11C21C31CY12CY22L1 L2
VHK200W-Q24-S12 120μF/100V 120μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q24-S15 47μF/100V 47μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q24-S24 100μF/100V 100μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q24-S28 100μF/100V 100μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q24-S48 100μF/100V 100μF/100V 100μF/100V 680 pF/2 KV 680 pF/2 KV 1.0 mH NC
VHK200W-Q48-S12 82μF/100V 82μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q48-S15 82μF/100V 82μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q48-S24 82μF/100V 82μF/100V NC NC NC 0.7 mH SHORT
VHK200W-Q48-S28 150μF/100V 150μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q48-S48 100μF/100V 100μF/100V 100μF/100V 680 pF/2 KV 680 pF/2 KV 1.0 mH NC
EN55022 CLASS A
Notes: 1. Aluminum capacitors.
2. Ceramic capacitors.
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CUI Inc │ SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER date 12/16/2013 │ page 6 of 7
20V
O, nom
(100 + ∆%) 2000
R
trim - up = ( - - 40)
(KΩ)
1.225 x ∆%∆%
Trim-Down Formula
(for all 12, 15, 24, & 281 Vdc Output Models)
APPLICATION NOTES
1. Output Voltage Trimming
Leave open if not used.
+Sense
-Sense
Trim up
+Vin
-Vin -Vo
+Vo
R trim-up
R-Load
Trim
Trim dow
n
+Vin
R trim-down
R-Load
Trim
+Vo
+Sense
-Sense
-Vin -Vo
∆%
= ( )100
V
o, nom
- V
o
V
o, nom
5.11V
O, nom
(100 + ∆%) 511
R
trim - up
= ( - - 10.22)
(KΩ)
1.225 x ∆%
∆%
511
R
trim - down = ( - 10.22)
(KΩ)
∆%
2000
R
trim - down = ( - 40)
(KΩ)
∆%
Figure 4
Formula for Trim Resistor
Application Circuit for Trim pin
Trim-Up Formula
(for all 12, 15, 24, & 281 Vdc Output Models)
Trim-Up Formula
(for all 48 Vdc Output Models)
Trim-Down Formula
(for all 48 Vdc Output Models)
Notes: 1. For the 28 Vdc output models, a minimum input voltage of 10.8 Vdc is required to trim the 24 Vdc input models up 10%, and a minimum input voltage of 19 Vdc is
required to trim the 48 Vdc input models up 10%.
2.AllspecicationsaremeasuredatTa=25°C,nominalinputvoltageandfulloutputloadunlessotherwisespecied.
Note: Rtrim-upistheexternalresistorinKΩ
Rtrim-downistheexternalresistorinKΩ
VO, nom is the nominal output voltage
VO is the desired output voltage
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CUI Inc │ SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER date 12/16/2013 │ page 7 of 7
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
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 affect its safety or effectiveness.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
rev. description date
1.0 initial release 10/11/2006
1.01 new template applied 12/21/2011
1.02 misc. updates and corrections 03/13/2012
1.03 updated mechanical drawing 03/27/2012
1.04 V-Innitybrandingremoved 06/27/2012
1.05 updated spec 03/18/2013
1.06 updated spec 05/08/2013
1.07 added trimming and EMI information 12/16/2013
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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