rev.
page
page
1 of 10
date 04/2011
date
PART NUMBER: VHB75W
DESCRIPTION: half-brick dc-dc converter
description
The VHB75W series of DC-DC converters
are designed for high reliability
features
·37.5-75W isolated output
·Efficiency to 85%
applications, featuring over-temperature
protection, over-current protection. The
wide 4:1 input range (9-36V or 18-75V) is
very useful to stabilize an input source
like batteries in various discharging and
charging conditions. Additionally, high
efficiency, fast response, tight
·300 kHz switching frequency
·regulated output
·continuous short circuit
protection
·industry standard half-brick size
·remote on/off
·over-temperature protection
·over-current protection
regulations, remote sense and remote
On/Off control make these converters
very useful in many applications.
MODEL
input voltage
output
voltage
(V dc)
output
current
(A)
input current
efficiency
typ.
1
2
2
3
nominal
(V dc)
range
(V dc)
no load
full load
(mA)
(mA)
50
50
50
50
50
50
50
50
50
50
50
50
(%)
79
82
83
84
84
82
80
83
84
85
85
84
VHB75W-Q24-S3R3
VHB75W-Q24-S5
VHB75W-Q24-S12
VHB75W-Q24-S15
VHB75W-Q24-S24
VHB75W-Q24-S48
VHB75W-Q48-S3R3
VHB75W-Q48-S5
VHB75W-Q48-S12
VHB75W-Q48-S15
VHB75W-Q48-S24
VHB75W-Q48-S48
24
24
24
24
24
24
48
48
48
48
48
48
9.0~36.0
9.0~36.0
9.0~36.0
9.0~36.0
9.0~36.0
9.0~36.0
18.0~75.0
18.0~75.0
18.0~75.0
18.0~75.0
18.0~75.0
18.0~75.0
3.3
5
15
15
2611
3811
3765
3720
3720
3811
1320
1905
1860
1860
1860
1860
12
15
24
48
3.3
5
6.25
5
3.12
1.56
15
15
12
15
24
48
6.25
5
3.12
1.56
notes:
1. see output derating (page 4)
2. input currents are measured at nominal input voltage
3. efficiency is measured at nominal line, full load
INPUT
parameter
conditions/description
min
9
nom
24
48
8.8
8
max
36
units
V dc
V dc
V dc
V dc
V dc
V dc
input voltage range
18
75
under voltage lockout
24 Vin power up
24 Vin power down
48 Vin power up
17
16
48 Vin power down
section 15 in the application notes
PI type
remote on/off control4
input filter
notes:
4. add suffix “N” to the model number for negative logic on/off control
*V-Infinity reserves the right to make changes to its products or to discontinue any product or service without notice, and to advise customers to verify the most up-to-
date product information before placing orders. V-Infinity assumes no liability or responsibility for customer’s applications using V-Infinity products other than repair
or replacing (at V-I’s option) V-Infinity products not meeting V-I’s published specifications. Nothing will be covered outside of standard product warranty.
th
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.v-infinity.com