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VRB_LD-50W

3013.05.21-A/2

Page 1 of 7

VRB_LD-50W Series

50W,WIDE INPUT,ISOLATED &

REGULATED SINGLE OUTPUT DIP

PACKAGING, DC-DCCONVERTER

Patent Protected

RoHS

PART NUMBER SYSTEM

VRB2405LD-50W

Rated Power

ackage

P

Output Volt age

Input Volt age

Product Series

PRODUCT FEATURES

● Efficiency up to 93%

● Ultra wide input range(2:1)

● High and low temperature characteristics

● Output short circuit protection

● Input over- under voltage protection

● Output over current protection

● Output over voltage protection

● 1.5KVDC isolation

● Operating temperature range:

-40

~+85

℃℃

● Six-sided metal shield

● Industry standard pinout

● Industrial level specifications

● Good EMC performance

● Inverse polarity protection for A2S（chassis

mounting）and A4S（DIN-Rail mounting）

APPLICATION

VRB_LD-50W series offer 50W of output, 18-36VDC,

36-75VDC, single output, and features 1500VDC isolation,

Six-sided metal shield, under over current and short circuit

protection.

All

models

are

particularly

suited

to

tele-communications, industrial, test equipments power etc.

SELECTION GUIDE

Input Voltage(VDC)

Output Current (mA)

Input Current

(mA)(Typ.)

Model

①

Nominal(Range)

Output

Voltage

(VDC)

Max.

Min.

@Max.

Load

@No

Load

Reflected

Ripple

Current

(mA,Typ.)

Max.

Capacitor

Load

(

µF)

Efficiency

②

(%, Typ.)

@Max. Load

VRB2403LD-50W

3.3

10000

500

1511

50

27000

91

VRB2405LD-50W

5

10000

500

2240

70

18900

93

VRB2412LD-50W

12

4167

208

2240

85

3700

93

VRB2415LD-50W

15

3333

167

2240

85

2000

93

VRB2424LD-50W

24

(18-36)

24

2083

104

2240

85

40

1000

93

VRB4803LD-50W

3.3

10000

500

756

35

27000

91

VRB4805LD-50W

5

10000

500

1120

45

18900

93

VRB4812LD-50W

12

4167

208

1120

50

3700

93

VRB4815LD-50W

15

3333

167

1120

50

2000

93

VRB4824LD-50W

48

(36-75)

24

2083

104

1120

50

30

1000

93

Note: ① Series with suffix

“H” are heat sink mounting, series with suffix "A2S" are chassis mounting, with suffix "A4S" are DIN-Rail mounting, for example

VRB2405LD-50W HA2S is chassis mounting with heat sink, VRB2405LD-50WA4S is DIN-Rail mounting without heat sink. If the application has a higher

requirement for heat dissipation, you can choose modules with heat sink.

②The efficiency of "A2S" and "A4S" is approx. 2% lower for the protection of inverse polarity.

INPUT SPECIFICATIONS

Item

Test Conditions

Min.

Typ.

Max.

Unit

24VDC Input

-0.7

--

50

Input Surge Voltage(1sec. max.)

48VDC Input

-0.7

--

100

24VDC Input

--

--

18

Start-up Voltage

48VDC Input

--

--

36

24VDC Input

16

--

--

Input Under Voltage

Protection

Under Voltage Shutdown

48VDC Input

32

--

--

VDC