Datasheet > CM6903BGIZ

CM6903BGIZ

更新时间： 2024-11-29 06:48:11

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
14页	216K
描述
Low Pin Count PFC/PWM CONTROLLER COMBO

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CM6903BGIZ 技术参数

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

CM6903BGIZ 数据手册

CM6903B

Low Pin Count PFC/PWM CONTROLLER COMBO

GENERAL DESCRIPTION

FEATURES

The CM6903B is a space-saving PFC-PWM controller for

power factor corrected, switched mode power supplies that

offers very low start-up and operating currents. For the

power supply less than 500Watt, its input current shaping

PFC performance could be very close to CM6800 or

ML4800 architecture.

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

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

Pin to pin compatible with FAN6903/4

Enable lowest BOM for power supply with PFC

Internally synchronized PFC and PWM in one IC

Patented slew rate enhanced voltage error amplifier with

advanced input current shaping technique

Universal Line Input Voltage

Power Factor Correction (PFC) offers the use of smaller,

lower cost bulk capacitors, reduces power line loading and

stress on the switching FETs, and results in a power supply

fully compliant to IEC1000-3-2 specifications. The

CM6903B includes circuits for the implementation of a

leading edge, input current shaping technique “boost” type

PFC and a trailing edge, PWM.

CCM boost or DCM boost with leading edge modulation

PFC using Input Current Shaping Technique

Feedforward IAC pin to do the automatic slope

compensation

PFCOVP, PFC VCCOVP, Precision -1V PFC ILIMIT,

Tri-Fault Detect comparator to meet UL1950

No bleed resistor required

The CM6903B’s PFC and PWM operate at the same

frequency, 67.5kHz. This higher frequency allows the user

to design with smaller PWM components while maintaining

the optimum operating frequency for the PFC. An PFC OVP

comparator shuts down the PFC section in the event of a

sudden decrease in load. The PFC section also includes

peak current limiting for enhanced system reliability.

Low supply currents; start-up: 100uA typical, operating

current: 2mA typical.

Synchronized leading PFC and trailing edge modulation

PWM to reduce ripple current in the storage capacitor

between the PFC and PWM sections and to reduce

switching noise in the system

VINOK Comparator to guarantee to enable PWM when

PFC reach steady state

High efficiency trailing-edge current mode PWM

UVLO, REFOK, and brownout protection

Digital PWM softstart: CM6903B (10ms)

Precision PWM 1.5V current limit for current mode

operation

24 Hours Technical Support---WebSIM

Champion provides customers an online circuit simulation tool

called WebSIM. You could simply logon our website at

www.champion-micro.com for details.

APPLICATIONS

PIN CONFIGURATION

SIP-09 (Z09)

Front View

Desktop PC Power Supply

AC Adaptor

Internet Server Power Supply

IPC Power Supply

UPS

Battery Charger

DC Motor Power Supply

Monitor Power Supply

Telecom System Power Supply

Distributed Power

2007/04/13 Rev1.0

Champion Microelectronic Corporation

Page 1

12 3 4 5 6 7...14

中文翻译

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与CM6903BGIZ相关器件

型号	品牌	获取价格	描述	数据表
CM6903BIZ	CHAMP	获取价格	Low Pin Count PFC/PWM CONTROLLER COMBO
CM6903IS	CHAMP	获取价格	Low Pin Count PFC/PWM Controller Combo
CM6903IZ	CHAMP	获取价格	Low Pin Count PFC/PWM Controller Combo
CM6904	CHAMP	获取价格	Low Pin Count PFC/PWM Controller Combo
CM6904IZ	CHAMP	获取价格	Low Pin Count PFC/PWM Controller Combo
CM698	CML	获取价格	T-1 3/4 Midget Groove Base
CM6A	CML	获取价格	T-2 Telephone Slide Base - Type 5 (short)
CM6B	CML	获取价格	T-2 Telephone Slide Base - Type 5 (short)
CM6C	CML	获取价格	T-2 Telephone Slide Base - Type 5 (short)
CM6L100P0	MOLEX	获取价格	D Microminiature Connector, 100 Contact(s), Male, Solder Terminal

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