FAN4810

更新时间： 2024-09-17 22:29:23

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		功率因数校正控制器
页数	文件大小	规格书
14页	159K
描述
Power Factor Correction Controller

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中文翻译

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数据手册

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FAN4810 数据手册

www.fairchildsemi.com

FAN4810

Power Factor Correction Controller

Features

General Description

• TriFault Detect™ for UL1950 compliance and enhanced

safety

• Slew rate enhanced transconductance error ampliﬁer for

ultra-fast PFC response

• Low power: 200µA startup current, 5.5mA operating

current

• Low total harmonic distortion, high PF

• Average current, continuous boost leading edge PFC

• Current fed gain modulator for improved noise immunity

• Overvoltage and brown-out protection, UVLO, and soft

start

The FAN4810 is a controller for power factor corrected,

switched mode power supplies. The FAN4810 includes

circuits for the implementation of leading edge, average

current, “boost” type power factor correction and results in a

power supply that fully complies with IEC1000-3-2 speciﬁ-

cation. It also includes a TriFault Detect™ function to help

ensure that no unsafe conditions will result from single

component failure in the PFC. Gate-driver with 1A

capability minimizes the need for external driver circuit.

Low power requirements improve efﬁciency and reduce

component costs. The PFC also includes peak current

limiting, input voltage brownout protection and a over-

voltage comparator shuts down the PFC section in the event

of a sudden decrease in load. The clock-out signal can be

used to synchronize down-stream PWM stages in order to

reduce system noise.

• Synchronized clock output

Block Diagram

POWER FACTOR CORRECTOR

IEAO

VEAO

TRI-FAULT

OVP

17V

REF

VEA

0.5V

–

7.5V

REFERENCE

–

IEA

3.6kΩ

2.75V

-1V

–

2.5V

–

GAIN

RMS

MODULATOR

PFC OUT

3.6kΩ

PFC I

LIMIT

SENSE

RAMP 1

OSCILLATOR

DUTY CYCLE

LIMIT

1.25V

CLKOUT

–

25µA

–

2.45V

CLKSD

REF

UVLO

REV. 1.0.12 9/24/03

12 3 4 5 6 7...14

中文翻译

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