KA5Q0740

更新时间： 2024-11-15 22:06:47

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		开关
页数	文件大小	规格书
12页	287K
描述
Fairchild Power Switch(FPS)

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中文翻译

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数据手册

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KA5Q0740 数据手册

www.fairchildsemi.com

KA5Q0740RT

Fairchild Power Switch(FPS)

Features

Description

• Quasi Resonant Converter Controller

• Internal Burst Mode Controller for Stand-by Mode

• Pulse by Pulse Current Limiting

• Over Current Latch Protection

• Over Voltage Protection (Vsync: Min. 11V)

• Internal Thermal Shutdown Function

• Under Voltage Lockout

The Fairchild Power Switch(FPS) product family is specially

designed for an off-line SMPS with minimal external

components. The Fairchild Power Switch(FPS) consists of a

high voltage power SenseFET and a current mode PWM IC.

The integrated PWM controller includes the fixed oscillator,

the under voltage lock out, the leading edge blanking, the

optimized gate turn-on/turn-off driver, the thermal shut down

protection, the over voltage protection, and the temperature

compensated precision current sources for loop compensation

and fault protection circuitry. Compared to a discrete

MOSFET and a controller or a RCC switching converter

solutions, a Fairchild Power Switch(FPS) can reduce the total

number of components, design size, and weight, so it will

improve efficiency, productivity, and system reliability. It has

a basic platform well suited for cost-effective design in a

quasi-resonant converter as a C-TV power supply.

• Internal High Voltage Sense FET

• Auto-Restart Mode

TO-220F-5L

1. Drain 2. GND 3. V

4. Feedback 5. Sync

Internal Block Diagram

VCC DRAIN

Internal

VREF

BIAS

32V +1%

11V on

12V off

UVLO

15V/9V

Burst Mode

3.5V/1.25V

Ron

SYNC

Rof

OSC

Roff

Normal Mode

4.6V/2.6V

VREF

LEB

450ns

Ifb

FEEDBACK

2.5R

Offset

Idelay

OLP

OVP

Delay

80ns

Rsense

OCL

7.5V

Power

Reset

SOURCE

Thermal

Shut Down

Sync

Power on Reset

(VCC=6.5V)

12V

Rev.1.0.4

12 3 4 5 6 7...12

中文翻译

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