FAN4800

更新时间： 2024-11-24 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
19页	370K
描述
Low Start-Up Current PFC/PWM Controller Combos

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

FAN4800 数据手册

www.fairchildsemi.com

FAN4800

Low Start-Up Current PFC/PWM Controller Combos

Features

General Description

• Low start-up current(100µA typ.)

• Low operating current(2.5mA typ.)

• Low total harmonic distortion, high power factor

• Pin-compatible upgrade for the ML4800

• Average current, continuous, or discontinuous boost

leading edge PFC

• Slew rate enhanced transconductance error

amplifier for ultra-fast PFC response

• Internally synchronized leading edge PFC and

trailing edge PWM

The FAN4800 is a controller for power factor corrected,

switched mode power supplies. Power Factor Correc-

tion (PFC) allows the use of smaller, lower cost bulk

capacitors, reduces power line loading and stress on

the switching FETs, and results in a power supply that

fully complies with the IEC-1000-3-2 specifications.

Intended as a Bi-CMOS version of the industry-stan-

dard ML4800, the FAN4800 includes circuits for the

implementation of leading edge, average current, boost

type power factor correction and a trailing edge, pulse

width PWM (Pulse Width Modulator). A gate driver with

1A capabilities minimizes the need for external driver

circuits. Low power requirements improve efficiency

and reduce component costs.

• Reduction of ripple current in the storage capacitor

between the PFC and PWM sections

• PWM configurable for current mode or voltage mode

operation

• Additional folded-back current limit for PWM section

• 20V BiCMOS process

• VIN OK guaranteed turn on PWM at 2.25V

• Vcc OVP Comparator, Low Power Detect

Comparator

• Current-Fed gain modulator for improved noise

immunity

• Brown out control, over-voltage protection, UVLO,

soft start, and Reference OK

An over voltage comparator shuts down the PFC sec-

tion in the event of a sudden decrease in load. The

PFC section also includes peak current limiting and

input voltage brownout protection. The PWM section

can be operated in current or voltage mode, at up to

250kHz, and includes an accurate 50% duty cycle limit

to prevent transformer saturation.

• Available in a 16-DIP Package

The FAN4800 includes a folded-back current limit for

the PWM section to provide a short circuit protection

function.

Applications

• Desktop PC Power Supply

• Internet Server Power Supply

• Un-interruptible Power Supply UPS

• Battery Charger

16-DIP

• DC Motor Power Supply

• Monitor Power Supply

• Telecom System Power Supply

• Distributed Power

Rev. 1.0.0

12 3 4 5 6 7...19

中文翻译

下载PDF

与FAN4800相关器件

型号	品牌	获取价格	描述	数据表
FAN4800_06	FAIRCHILD	获取价格	Low Start-Up Current PFC/PWM Controller Combos
FAN4800_10	FAIRCHILD	获取价格	Low Startup Current PFC/PWM Controller Combinations
FAN480001S	FAIRCHILD	获取价格	PFC/PWM Controller Combination
FAN48002S	FAIRCHILD	获取价格	PFC/PWM Controller Combination
FAN4800A	FAIRCHILD	获取价格	PFC/PWM Controller Combination
FAN4800A_09	FAIRCHILD	获取价格	PFC/PWM Controller Combination
FAN4800AMY	FAIRCHILD	获取价格	PFC/PWM Controller Combination
FAN4800AMY	ONSEMI	获取价格	CCM PFC + PWM 组合控制器
FAN4800ANY	FAIRCHILD	获取价格	PFC/PWM Controller Combination
FAN4800ANY	ONSEMI	获取价格	CCM PFC + PWM 组合控制器

与FAN4800相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

40
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

32
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

60
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

56

产品中心

服务支持

精选活动

关于我们

帮助中心

FAN4800

FAN4800 数据手册

与FAN4800相关器件

与FAN4800相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

FAN4800

FAN4800 数据手册

与FAN4800相关器件

与FAN4800相关文章

您还可以找

您在本页遇到什么问题？