Datasheet > CM6805

CM6805

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
16页	391K
描述
10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter

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CM6805 数据手册

CM6805(A;B)/CM6806A

10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter

GENERAL DESCRIPTION

FEATURES

The CM6805A and CM6806A are the Green-Mode

PFC/PWM Combo controller for High Density AC Adapter.

For the power supply, its input current shaping PFC

performance could be very close to the performance of the

CM6800 or ML4800 leading edge modulation average

current topology.

Both PFC and PWM have the Green Mode to meet blue

angel and energy star spec.

10-Pin SOIC package

PWM pulse skipping for the green mode

Use RAC as the Startup resistor around 5 Mega Ohm at

IAC pin

It can use the HV bipolar to start up the chip and it helps

green mode.

CM6805A/CM6806A 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 CM6805A /

CM6806A includes circuits for the implementation of a

leading edge, input current shaping technique “boost” type

PFC and a trailing edge, PWM.

Easy to configure into Boost Follower

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

CCM boost or DCM boost with leading edge modulation

PFC using Input Current Shaping Technique

Feedforward IAC pin to do the automatic slope

compensation

The CM6805A’s PFC and PWM operate at the same

frequency, 67.5kHz. A 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.

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

Tri-Fault Detect comparator to meet UL1950

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

current: 2mA typical.

Both PFC and PWM have the Green Mode Functions.

When the load is below GMth, Green Mode Threshold,

PFCOUT is turned off. The GMth can be programmed by

the designer. PWM Green Mode will happen when the

PWMCMP (PWM Comparator) Duty Cycle is less than ~

6%, in the next cycle, the PWMOUT pulse will be removed

until PWMCMP Duty Cycle is greater than 6%, then the

next cycle, PWMOUT pulse appears.

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

Exact 50% PWM maximum duty cycle

UVLO, REFOK, and brownout protection

Digital PFC and PWM soft start, ~10mS

Precision PWM 1.5V current limit for current mode

operation

PWM has a PWMtrifault pin which can sense the PWM

short and determine the GMth to turn off PFC.

PWMtrifault to sense DC to DC short and Turn off PFC at

GMth

PWMtrifault also can be programmed to do the Thermal

Protection

2006/10/11 Rev1.0

Champion Microelectronic Corporation

Page 1

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中文翻译

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与CM6805相关器件

型号	品牌	获取价格	描述	数据表
CM6805A	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER
CM6805A_10	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER
CM6805AGIR	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER
CM6805AGIRTR	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER
CM6805AIR	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter
CM6805B	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter
CM6805BGIR	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter
CM6805BIR	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter
CM6805BO	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER
CM6805BO_10	CHAMP	获取价格	10-PIN Green-Mode PFC/PWM Combo CONTROLLER

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