Datasheet > WRF1203S-3WR2

WRF1203S-3WR2

更新时间： 2024-02-11 03:55:58

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RSG		/
页数	文件大小	规格书
7页	658K
描述
Ultra-Miniature SIP Package

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技术参数
数据手册

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WRF1203S-3WR2 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.67
模拟集成电路 - 其他类型：	DC-DC REGULATED POWER SUPPLY MODULE	Base Number Matches：	1

WRF1203S-3WR2 数据手册

OUTLINE DIMENSIONS,RECOMMENDED FOOTPRINT & PACKAGING

TEST CONFIGURATIONS

Input Reflected-Ripple Current Test Setup

Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate the source impedance.

Oscilloscope

Lin

Current

Probe

Load

Cin

Lin(4.7µH)

Cin(220µF, ESR < 1.0Ω at 100 KHz)

DESIGN CONSIDERATIONS

1) Requirement on output load

To ensure this module can operate efficiently and reliably, during operation, the minimum output load could not be less than 5% of the full load,

otherwise output ripple maybe increase dramatically. If the actual output power is very small, please connect a resistor with proper resistance at the

output end in parallel to increase the load, suppose to use the resistance of 5% rated power, or use our company’s products with a lower rated output

power.

2) Recommended circuit

All the WRE_S-3WR2 & WRF_S-3WR2 series have been tested according to the following recommended test circuit before leaving the factory

(see Figure 6).

If you want to further decrease the input/output ripple, you can increase a capacitance-values 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 must be less than the Max. Capacitive

Load.

General: Cin1:

5V&12V

24V&48V

100μF

10μF

47μF

1μF

Cin2: 5V&12V

24V&48V

Lin:

4.7μH~12μH

Cs:

10μF~22μF

Cout: 100μF(Typ.)

Lout:

Cd:

2.2μH~10μH

47nF/100V

Single output

Dual output

Lin

Lout

Vin

+Vo

Cin1

Cin2

Cout

Cin1 Cin2

Cout

Lout

-Vo

GND

D1 Ic

(Figure 6)

The copyright and authority for the interpretation of the products are reserved by MORNSUN

WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 6 of 7

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