VHB75W-Q24-S48 CUI Inc, VHB75W-Q24-S48 Datasheet - Page 8

• Manufacturer Part Number: VHB75W-Q24-S48
• Description: CONVERTER DC/DC 75W 48V 1.56A
• Manufacturer: CUI Inc
• Series: V-Infinity VHB75Wr
• Type: With Remote On/Off and UVLOr

Specifications of VHB75W-Q24-S48

• Voltage - Input (min): 9V
• Voltage - Input (max): 36V
• Number Of Outputs: 1
• Power (watts) - Manufacture Series: 75W
• Power (watts) - Max: 75W
• 1st Output: 48 VDC @ 1.56A
• 2nd Output: -
• 3rd Output: -
• Voltage - Isolation: 1.5kV (1500V)
• Mounting Type: Through Hole
• Package / Case: 9-DIP Module, 1/2 Brick
• Size / Dimension: 2.40" L x 2.28" W x 0.50" H (61mm x 57.9mm x 12.7mm)
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 82%
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 102-2245

PART NUMBER: VHB75W
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. The standard version defaults to positive logic. For negative logic, indicate the selection when ordering.
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
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: half-brick 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
For proper diode selection, make
SW
www.v-infinity.com
page
date
REM (pin 2)
-Vin (pin 4)
04/2011
8 of 10