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CX7508 - High Precision CC/CV Primary-Side PWM Power Switch

Datasheet Summary

Description

CX7508 is a high performance offline PWM power switch for low power AC/DC charger and adapter applications.It operates in primary-side sensing and regulation.Consequently, opto-coupler and TL431 could be eliminated.

Features

  • including Cycle-by-Cycle current limiting, VDD Over Voltage Protection (VDD OVP), short circuit protection, built-in leading edge blanking, VDD under voltage lockout (UVLO), OTP, etc. High precision constant voltage (CV) and constant current (CC) can be achieved by CX7508. CX7508 is offered in DIP7 package.

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Datasheet preview – CX7508

Datasheet Details

Part number CX7508
Manufacturer CXW
File Size 1.93 MB
Description High Precision CC/CV Primary-Side PWM Power Switch
Datasheet download datasheet CX7508 Datasheet
Additional preview pages of the CX7508 datasheet.

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Full PDF Text Transcription

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CX7508 High Precision CC/CV Primary-Side PWM Power Switch GENERAL DESCRIPTION CX7508 is a high performance offline PWM power switch for low power AC/DC charger and adapter applications.It operates in primary-side sensing and regulation.Consequently, opto-coupler and TL431 could be eliminated. High Precision Constant Voltage (CV) and Constant Current (CC) control are integrated as shown in the figure below. In CC control, the current and output power setting can be adjusted externally by the sense resistor Rs at CS pin. In CV control, multi-mode operations are utilized to achieve high performance and high efficiency. In addition, good load regulation is achieved by the built-in Cable Drop Compensation.
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