WRB4812YT-3W [MICRODC]

3W, WIDE INPUT, ISOLATED & REGULATED SINGLE OUTPUT DC/DC CONVERTER; 3W ，宽电压输入，隔离稳压单路输出DC / DC转换器


型号：	WRB4812YT-3W
厂家：	MICRODC POWER TECHNOLOGY CO., LTD
描述：	3W, WIDE INPUT, ISOLATED & REGULATED SINGLE OUTPUT DC/DC CONVERTER 3W ，宽电压输入，隔离稳压单路输出DC / DC转换器转换器输出元件输入元件
文件：	总3页 (文件大小：463K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

WRB-YT-3W Series

3W, WIDE INPUT, ISOLATED & REGULATED SINGLE OUTPUT DC/DC CONVERTER

SELECTION GUIDE

Input

Output

Efficiency

(%,Typ.)

Voltage

(VDC)

Current(MA)

order code

Voltage(VDC)

Range

Nominal

Max*

Max.

Min.

600

250

200

600

250

200

600

250

200

FEATURES

◆Efficiency up to 81%

WRB1205YT-3W

WRB1212YT-3W

WRB1215YT-3W

WRB2405YT-3W

WRB2412YT-3W

WRB2415YT-3W

WRB4805YT-3W

WRB4812YT-3W

WRB4815YT-3W

9-18

◆Operating temperature: -40°C ~ +85°C

◆1500VDC isolation

18-36

36-72

◆UL94V-0 package material

◆No external component required

◆Industry standard pinout

◆MTBF>1,000,000 hours

◆ RoHS Compliance

* Input voltage can not exceed this value, or will cause the permanent damage.

MODEL SELECTION

⑥

①

②

③

④

⑤

WRB 12 05 Y T -3W

①Product Series

③Output Voltage

⑤Package Style

②Input Voltage

④Wide (2:1) Input Range

⑥Rated Power

COMMON SPECIFICATIONS

Item

Test conditions

Min.

Typ.

Max.

Units

Storage humidity

Operating temperature

-40

-55

℃

DESCRIPTION

125

℃

Storage temperature

Temp. Rise at full load

The WRB_YT-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:

℃

1.5mm from case for 10 seconds

300

℃

Lead temperature

Cooling

Free air convection

1) Where the voltage of the input power supply is wide

range (voltage range ≤2:1);

Continuous, automatic recovery

Epoxy Resin (UL94-V0)

Short circuit protection

Case material

MTBF

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.

1000

k hours

Weight

MICRODC reserves the copyright

http://www.microdc.cn

Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 1 of 3

WRB-YT-3W Series

TYPICAL CHARACTERISTICS

ISOLATION SPECIFICATIONS

Item

Test Conditions

Min.

Typ.

Max.

Units

Isolation voltage

Tested for 1 minute and 1mA max

Test at 500VDC

1500

1000

VDC

MΩ

Isolation resistance

Isolation capacitance

Input/Output, 100KHz/1V

100

*Supply voltage must be discontinued at the end of short circuit duration.

OUTPUT SPECIFICATIONS

Item

Output power

Test Conditions

Min.

Typ.

Max.

Units

Refer to products program

Refer to recommended circuit

From 10% to 100% load

0.3

Output voltage accuracy

Load regulation

±1

±3

±0.1

±0.2

±1

Line regulation

Input voltage from low to high

Refer to recommended circuit

20MHz Bandwidth

±0.5

±0.03

100

Temperature drift (Vout)

Ripple & noise*

%/℃

mVp-p

kHz

Switching frequency

100% load, input voltage range

300

*Test ripple and noise by “parallel cable”method . See detailed operation instructions at Testing of

ower Converter section , application notes.

*Supply voltage must be discontinued at the end of short circuit duration.

RECOMMENDED CIRCUIT

APPLICATION NOTE

1) Requirement On Output Load

In order to ensure the product operate efficiently and reliably, in addition to a max load (namely full

load), a minimum load is specified for this kind of DC/DC converter. Make sure the specified range of

input voltage is not exceeded, the minimum output load no less than 10% load. If the actual load is less

than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability

will reduce greatly. If the actual output power is very small, please add an appropriate resistor as extra

loading, or contact our company for other lower output power products.

2) Recommended Circuit

All the WRB_YT-3W series have been tested according to the following recommended testing circuit

before leaving factory. This series should be tested under load (See Figure 1).

If you want to further decrease the input/output ripple, you can increase capacitance properly or

choose capacitors with low ESR. However, the capacitance of the output filter capacitor must be proper.

If the capacitance is too big, a startup problem might arise. For every channel of output, provided the

safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees (Table 1).

General:

Cin:

12V

100µF

24V&48V

10µF-47µF

Cout: 10µF/100mA

3) Input Current

When it is used in unregulated power supply, be sure that the fluctuating range of the power supply

and the rippled voltage do not exceed the module standard. Input current of power supply should afford

the flash startup current of this kind of DC/DC module (Figure 2)

Output External Capacitor Table (Table 1)

Single Vout

Cout

(VDC)

(μF)

General: Ip ≤1..4*Iin-max

1000

470

4) No parallel connection or plug and play

330

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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 2 of 3

WRB-YT-3W Series

OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS

MECHANICAL DIMENSIONS

RECOMMENDED FOOTPRINT

TUBE OUTLINE DIMENSIONS

FOOTPRINT DETAILS

Function

2,3

GND

+Vo

22,23

Vin

Others

NC: No connection

Note:

Unit:mm[inch]

Pin section tolerances:±0.10mm[±0.004inch]

General tolerances:±0.25mm[±0.010inch]

Note:

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

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

3. Capacitor MAX load tested at input voltage range and full load.

4. All specifications measured at Ta=25℃, humidity<75%, nominal input voltage and rated output load unless otherwise specified.

5. Only typical models listed, other models may be different, please contact our technical person for more details.

6. In this datasheet, all the test methods of indications are based on corporate standards.

RoHS COMPLIANT INFORMATION

This series is compatible with RoHS soldering systems with a peak wave solder temperature

of 300°C for 10 seconds.

The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin

with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this

series are backward compatible with Sn/Pb soldering systems.

Microdc Professional Power Module,Inc.

Tel:0086-20-86000646 E-mail:tech@microdc.cn

Website:http://www.microdc.cn

REACH COMPLIANT INFORMATION

This series has proven that this product does not contain harmful chemicals, it also has

harmful chemical substances through the registration, inspection and approval.

http://www.microdc.cn

Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 3 of 3

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