Datasheet > FAN4800_10

FAN4800_10

更新时间： 2024-11-09 11:54:19

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	405K
描述
Low Startup Current PFC/PWM Controller Combinations

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中文翻译

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FAN4800_10 数据手册

November 2010

FAN4800

Low Startup Current PFC/PWM Controller Combinations

Features

Description

Low Startup Current (100µA Typical)

Low Operating Current (2.5mA Typical)

Low Total Harmonic Distortion, High Power Factor

Pin-Compatible Upgrade for the ML4800

The FAN4800 is a controller for power-factor-corrected,

switched-mode power supplies. Power Factor Correction

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

tors, reduces power line loading and stress on the

switching FETs, and results in a power supply that fully

complies with IEC-1000-3-2 specifications. Intended as a

BiCMOS version of the industry-standard ML4800, the

FAN4800 includes circuits for the implementation of

leading-edge, average-current, boost-type power factor

correction and a trailing-edge Pulse Width Modulator

(PWM). A gate driver with 1A capabilities minimizes the

need for external driver circuits. Low-power require-

ments improve efficiency and reduce component costs.

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

Reduction of Ripple Current in the Storage Capacitor

between the PFC and PWM Sections

PWM Configurable for Current Mode or Voltage Mode

Additional Folded-Back Current Limit for PWM Section

20V BiCMOS Process

An over-voltage comparator shuts down the PFC section

in the event of a sudden decrease in load. The PFC sec-

tion 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.

V_INOK Guaranteed Turn-on PWM at 2.25V

V_CCOVP Comparator, Low-Power Detect Comparator

Current-Fed Gain Modulator for Improved Noise

Immunity

The FAN4800 includes a folded-back current limit for the

PWM section to provide short-circuit protection.

Brownout Control, Over-Voltage Protection, UVLO,

Soft-Start, and Reference OK

Available in16-DIP Package

16-PDIP

Applications

Desktop PC Power Supply

Internet Server Power Supply

Uninterruptible Power Supply (UPS)

Battery Charger

DC Motor Power Supply

Monitor Power Supply

Telecom System Power Supply

Distributed Power

Ordering Information

Operating

Part Number

Packing

Method

Marking

Code

Package

Temperature Range

FAN4800IN

-40°C to +125°C

16-PDIP

Rail

FAN4800

FAN4800IN_G

FAN4800 Rev. 1.0.6

www.fairchildsemi.com

12 3 4 5 6 7...19

中文翻译

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与FAN4800_10相关器件

型号	品牌	获取价格	描述	数据表
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
FAN4800AS	FAIRCHILD	获取价格	PFC/PWM Controller Combination
FAN4800ASMY	FAIRCHILD	获取价格	PFC/PWM Controller Combination

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