VHB50W-Q24-S48 CUI Inc, VHB50W-Q24-S48 Datasheet - Page 8

• Manufacturer Part Number: VHB50W-Q24-S48
• Description: CONVERTER DC/DC 48V 1.04A 50W
• Manufacturer: CUI Inc
• Series: V-Infinity VHB50Wr
• Type: Isolatedr

Specifications of VHB50W-Q24-S48

• Output: 48V
• Number Of Outputs: 1
• Power (watts): 50W
• Mounting Type: Through Hole
• Voltage - Input: 9 ~ 36V
• Package / Case: 9-DIP Module
• 1st Output: 48 VDC @ 1.04A
• Size / Dimension: 2.40" L x 2.28" W x 0.50" H (61mm x 57.9mm x 12.7mm)
• Power (watts) - Rated: 50W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 83%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 102-1690

PART NUMBER: VHB50W
12. 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 con-
verters 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.
sure that: 1) the diodes voltage rating is higher than each converter output; 2) the rated diode current can carry the short-circuit cur-
rent; 3) the diodes do not overheat before the short is removed.
13. 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.
14. 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
FIGURE 8. REMOTE ON/OFF CONTROL
20050 SW 112
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
+Vin
-Vin
+Vin
-Vin
phone
phone [phone] fax
Negative logic
Output off
High signal here
DESCRIPTION: half-brick dc-dc converter
disable output
+Vo
+Vo
-Vo
-Vo
FIGURE 9. REMOTE ON/OFF CONTROL
WITH TRANSISTOR SWITCH
Positive logic
Output off
Output on
fax [phone]
For proper diode selection, make
SW
page
date
REM (pin 2)
-Vin (pin 4)
06/2009
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