rev.

page

date

page

date

DESCRIPTION: half-brick dc-dc converter

1 of 10

04/2011

20050

phone

phone 503.612.2300 fax

www.v-infinity.com

fax 503.612.2383

PART NUMBER: VHB75W

features

·37.5-75W isolated output

·Efficiency to 85%

·300 kHz switching frequency

·regulated output

·continuous short circuit

protection

·industry standard half-brick size

·remote on/off

·over-temperature protection

·over-current protection

description

The VHB75W series of DC-DC converters

are designed for high reliability

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

regulations, remote sense and remote

On/Off control make these converters

very useful in many applications.

MODEL

input voltage

output

output

input current

efficiency

nominal

range

voltage

(V dc)

(V dc)

(V dc)

(A)

(mA)

(mA)

(%)

VHB75W-Q24-S3R3

24

9.0~36.0

3.3

15

50

2611

79

VHB75W-Q24-S5

24

9.0~36.0

5

15

50

3811

82

VHB75W-Q24-S12

24

9.0~36.0

12

6.25

50

3765

83

VHB75W-Q24-S15

24

9.0~36.0

15

5

50

3720

84

VHB75W-Q24-S24

24

9.0~36.0

24

3.12

50

3720

84

VHB75W-Q24-S48

24

9.0~36.0

48

1.56

50

3811

82

VHB75W-Q48-S3R3

48

18.0~75.0

3.3

15

50

1320

80

VHB75W-Q48-S5

48

18.0~75.0

5

15

50

1905

83

VHB75W-Q48-S12

48

18.0~75.0

12

6.25

50

1860

84

VHB75W-Q48-S15

48

18.0~75.0

15

5

50

1860

85

VHB75W-Q48-S24

48

18.0~75.0

24

3.12

50

1860

85

VHB75W-Q48-S48

48

18.0~75.0

48

1.56

50

1860

84

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

*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.

INPUT

parameter

conditions/description

min

nom

max

units

input voltage range

9

24

36

V dc

18

48

75

V dc

under voltage lockout

24 Vin power up

8.8

V dc

24 Vin power down

8

V dc

48 Vin power up

17

V dc

48 Vin power down

16

V dc

section 15 in the application notes

input filter

PI type

notes:

4. add suffix “N” to the model number for negative logic on/off control