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CR6228

Green-Power Current Mode PWM Power Switch

Unspecified 

CR622X—CR6221/6224/6228/6229

Green-Power Current Mode PWM Power Switch

Feature

z Power on Soft Start Reducing MOSFET Vds

Stress

z Frequency shuffling for EMI

z Burst Mode Control For Improved Efficiency

and Minimum Standby power Design

z Audio Noise Free Operation

z Normal 50 KHz Switching Frequency

z Internal Synchronized Slope Compensation

z Low VDD Startup Current and Low Operating

Current

z Leading Edge Blanking on Current Sense

Input

z Pb-Free SOP-8L& DIP-8L

z Good Protection Coverage With Auto

Self-Recovery

¾ VDD Over Voltage Clamp and Under

Voltage Lockout with Hysteresis

(UVLO)

¾ Line Input Compensated Cycle-by-Cycle

Over-current Threshold Setting For

Constant Output Power Limiting Over

Universal Input Voltage Range

¾ Overload Protection (OLP)

¾ Over Voltage Protection (OVP)

Applications

z Battery Charger

z Digital Cameras and camcorder Adaptor

z VCR, SVR, STB, DVD & DVCD Player SMPS

z Set-Top Box (STB) Power

z Auxiliary Power Supply for PC and Server

z Open-frame SMPS

General Description

CR622X combines a dedicated current mode PWM

controller with a high voltage power MOSFET. It is

optimized for high performance, low standby power,

and cost effective off-line flyback converter

applications in sub 24W range.

CR622X offers complete protection coverage with

automatic self-recovery feature including

Cycle-by-Cycle current limiting (OCP), over load

protection (OLP), VDD over voltage clamp and

under voltage lockout (UVLO). Excellent EMI

performance is achieved with frequency shuffling

technique together with soft switching control at he

totem pole gate drive output.

CR622X is offered in DIP-8L & SOP-8L package.

Nov, 2009 V2.2

1/10

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