Datasheet > CM6800XIS

CM6800XIS

更新时间： 2024-01-30 21:45:19

品牌	Logo	应用领域
虹冠电子 - CHAMP		功率因数校正控制器
页数	文件大小	规格书
18页	289K
描述
LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO

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数据手册

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CM6800XIS 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.77
Is Samacsys：	N	Base Number Matches：	1

CM6800XIS 数据手册

CM6800

LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO

GENERAL DESCRIPTION

FEATURES

The CM6800 is a controller for power factor corrected,

switched mode power suppliers. Power Factor Correction

(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

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

BiCMOS version of the industry-standard ML4824,

CM6800 includes circuits for the implementation of leading

edge, average current, “boost” type power factor

correction and a trailing edge, pulse width modulator

(PWM). Gate-driver with 1A capabilities minimizes the

need for external driver circuits. Low power requirements

improve efficiency and reduce component costs.

Patent Number #5,565,761, #5,747,977, #5,742,151,

#5,804,950, #5,798,635

Pin to pin compatible with ML4800 and FAN4800

Additional folded-back current limit for PWM section.

23V Bi-CMOS process

VIN OK turn on PWM at 2.5V instead of 1.5V

Internally synchronized leading edge PFC and trailing

edge PWM in one IC

Slew rate enhanced transconductance error amplifier for

ultra-fast PFC response

^{Low start-up current (100}μA typ.)

Low operating current (3.0mA type.)

Low total harmonic distortion, high PF

Reduces ripple current in the storage capacitor between

the PFC and PWM sections

An over-voltage comparator shuts down the PFC section

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.

Average current, continuous or discontinuous boost

leading edge PFC

VCC OVP Comparator, Low Power Detect Comparator

PWM configurable for current mode or voltage mode

operation

Current fed gain modulator for improved noise immunity

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

soft start, and Reference OK

CM6800 includes an additional folded-back current limit

for PWM section to provide short circuit protection

function.

APPLICATIONS

PIN CONFIGURATION

SOP-16 (S16) / PDIP-16 (P16)

Top View

Desktop PC Power Supply

Internet Server Power Supply

IPC Power Supply

VEAO

IEAO

IAC

UPS

VFB

Battery Charger

VREF

ISENSE

DC Motor Power Supply

Monitor Power Supply

Telecom System Power Supply

Distributed Power

VCC

PFC OUT

PWM OUT

GND

VRMS

VDC

RAMP1

RAMP2

DC ILIMIT

2008/10/23 Rev. 2.1

Champion Microelectronic Corporation

Page 1

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