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DP2539M - High Precision CC/CV Primary-Side PWM Power Switch

Description

DP2539M 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 DP2539M. DP2539M is offered in DIP8 package.

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Datasheet Details

Part number DP2539M
Manufacturer DEVELOPER MICROELECTRONICS
File Size 1.01 MB
Description High Precision CC/CV Primary-Side PWM Power Switch
Datasheet download datasheet DP2539M Datasheet
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Full PDF Text Transcription

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DP2539M High Precision CC/CV Primary-Side PWM Power Switch GENERAL DESCRIPTION DP2539M 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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