VHK50W-Q48-S12 CUI Inc, VHK50W-Q48-S12 Datasheet - Page 8

• Manufacturer Part Number: VHK50W-Q48-S12
• Description: CONVERTER DC-DC 12V 4.16A 50W
• Manufacturer: CUI Inc
• Series: V-Infinity VHK50Wr
• Type: Isolatedr

Specifications of VHK50W-Q48-S12

• Output: 12V
• Number Of Outputs: 1
• Power (watts): 50W
• Mounting Type: Chassis Mount
• Voltage - Input: 18 ~ 75V
• Package / Case: Module
• 1st Output: 12 VDC @ 4.16A
• Size / Dimension: 4.23" L x 4.01" W x 1.50" H (107.5mm x 101.8mm x 38mm)
• Power (watts) - Rated: 50W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 83%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Other names: 102-1827

PART NUMBER: VHK50W
14. OUTPUT SERIES CONNECTIONS
Two or more converters can be connected in series to obtain a higher output voltage. To prevent output reverse biasing each other in
case of a short, add a Schottky diode on each output in reverse polarity, as shown in the diagram. In the event of a short, the
converters will forward-bias the diodes and the output reversal will be limited to one diode drop (about 0.5V) only, so as not to
damage the converters. The forward current will cause each converter to go into short-circuit protection.
make sure that: 1) the diodes voltage rating is higher than each converter output; 2) the rated diode current can carry the short-circuit
current; 3) the diodes do not overheat before the short is removed.
15. REMOTE OUTPUT ON/OFF CONTROL
The converter output can be enabled or disabled through the On/Off pin. The control logic is shown in this table. A common control
circuit is shown below. The standard version defaults to positive logic. For negative logic, indicate the selection when ordering.
16. ISOLATION
The input and output of the converter are electrically isolated. If needed, an output terminal can be connected to an input terminal,
resulting in the converter non-isolated.
SW
20050 SW 112
FIGURE 8. REMOTE ON/OFF CONTROL
FIGURE 7. OUTPUT
SERIES CONNECTIONS
REM
REM
-Vin
-Vin
th
Ave. Tualatin, Oregon 97062
SW Open (V
Logic Table
SW Closed (V
+Vo
-Vo
REM
REM
>2.4 V)
<0.8 V) Output on
phone
phone [phone] fax
+Vin
-Vin
+Vin
-Vin
Negative logic
Output off
High signal here
DESCRIPTION: chassis mount dc-dc converter
disable output
+Vo
+Vo
-Vo
-Vo
FIGURE 9. REMOTE ON/OFF CONTROL
WITH TRANSISTOR SWITCH
fax [phone]
Positive logic
Output off
Output on
SW
www.v-infinity.com
For proper diode selection,
page
date
REM (pin 2)
-Vin (pin 4)
08/2009
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