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CM6903AIZ

更新时间： 2024-01-02 07:06:27
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 302K
描述
Low Pin Count PFC/PWM CONTROLLER COMBO

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中文翻译

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CM6903AIZ 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

CM6903AIZ 数据手册

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CM6903A  
Low Pin Count PFC/PWM CONTROLLER COMBO  
GENERAL DESCRIPTION  
FEATURES  
The CM6903A is a space-saving PFC-PWM controller for ꢀ  
Patent Number #5,565,761, #5,747,977, #5,742,151,  
#5,804,950, #5,798,635  
power factor corrected, switched mode power supplies that  
offers very low start-up and operating currents. For the  
ꢀ
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 supply less than 500Watt, its input current shaping ꢀ  
PFC performance could be very close to CM6800 or  
ML4800 architecture.  
ꢀ
ꢀ
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  
CCM boost or DCM boost with leading edge modulation  
PFC using Input Current Shaping Technique  
Feedforward IAC pin to do the automatic slope  
compensation  
fully compliant to IEC1000-3-2 specifications. The  
CM6903A includes circuits for the implementation of a  
ꢀ
leading edge, input current shaping technique “boost” type ꢀ  
PFCOVP, PFC VCCOVP, Precision -1V PFC ILIMIT,  
Tri-Fault Detect comparator to meet UL1950  
No bleed resistor required  
PFC and a trailing edge, PWM.  
ꢀ
The CM6903A’s PFC and PWM operate at the same  
ꢀ
Low supply currents; start-up: 100uA typical, operating  
current: 2mA typical.  
frequency, 67kHz. 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  
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  
peak current limiting for enhanced system reliability.  
ꢀ
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: CM6903A (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  
1
2
3
4
5
6
7
8
9
DC Motor Power Supply  
Monitor Power Supply  
Telecom System Power Supply  
Distributed Power  
2005/01/20  
Champion Microelectronic Corporation  
Page 1  
1234567...14

中文翻译

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