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Specifications subject to change without notice.

WRA_LS-3W

A/3-2012

Page 1 of 2

WRA_LS-3W Series

3W , WIDE INPUT, ISOLATED & REGULATED

DUAL OUTPUT DC/DC CONVERTER

Patent Protection

RoHS

FEATURES

PRODUCT PROGRAM

Input

Output

Voltage (VDC)

Current (mA)

Part

Number

Nominal

Range

Max*

Voltage

(VDC)

Max

Min

Efficiency

(%, Typ)

WRA2412LS-3W

±12

±125

±13

82

WRA2415LS-3W

24

18-36

40

±15

±100

±10

83

WRA4812LS-3W

±12

±125

±13

80

WRA4815LS-3W

48

36-72

80

±15

±100

±10

81

Note:

1.Models listed with strike-through text have been officially discontinued.

2.* Input voltage over it may cause permanent damage to the device.

3. The load shouldn't be less than 10%, otherwise ripple will increase dramatically.

4.Operation under 10% load will not damage the converter; However, they may not meet all specification

listed.

OUTPUT SPECIFICATIONS

Item

Test Conditions

Min

Typ

Max

Units

Output power

Refer to products program

0.3

3

W

Positive voltage accuracy

Refer to recommended circuit

±1

±3

Negative voltage accuracy

Refer to recommended circuit

±3

±5

Load regulation*

From 10% to 100% load

±0.5

±1.0

Line regulation

Input voltage from low to high

±0.2

±0.5

%

Temperature drift (Vout)

Refer to recommended circuit

±0.03

%/

°C

Ripple & Noise**

20MHz Bandwidth

50

100

mVp-p

Switching Frequency

100% load, input voltage

300

KHz

*Dual output models unbalanced load:

±5%.

**Test ripple and noise by

“parallel cable” method. See detailed operation instructions at Testing of

Power Converter section, application notes.

ISOLATION SPECIFICATIONS

Item

Test conditions

Min

Typ

Max

Units

Isolation voltage

Tested for 1 minute and 1mA max

1500

VDC

Isolation resistance

Test at 500VDC

1000

M

Ω

Isolation Capacitance

Input/output, 100KHz/1V

80

PF

N

ote:

1. All specifications measured at TA=25

°C, humidity<75%, nominal input voltage and rated output

load unless otherwise specified.

2. See below recommended circuits for more details.

Wide (2:1) Input Range

I/0 Isolation 1500VDC

Operating Temperature: -40

°C to +85°C

Short Circuit Protection(automatic recovery)

External On/Off control

MTBF>1,000,000 hours

RoHS Compliance

APPLICATIONS

The WRA_LS-3W Series are specially designed

for applications where a wide range input voltage

power supplies are isolated from the input power

supply in a distributed power supply system on a

circuit board.

These products apply to:

1) Where the voltage of the input power supply is

wide range(voltage range

≤ 2:1);

2) Where isolation is necessary between input

and output(isolation voltage

≤1500VDC);

3) Where the regulation of the output voltage and

the output ripple noise are demanded.

MODEL SELECTION

WRA2412LS-3W

Product Ser ies

Input Voltage

Output Voltage

Package Style

Rated Power

MORNSUN Science & Technology co.,Ltd

Address: 2th floor 6th building, Huangzhou Industrial

District, Guangzhou, China

Tel: 86-20-38601850

Fax: 86-20-38601272

Http://www.mornsun-power.com