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DP2540A - High Precision CC/CV Primary-Side PWM Power Switch

General Description

DP2540A 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.

Key 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 DP2540A. DP2540A is offered in DIP7/SOP7 package.

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Datasheet Details

Part number DP2540A
Manufacturer DEVELOPER MICROELECTRONICS
File Size 814.84 KB
Description High Precision CC/CV Primary-Side PWM Power Switch
Datasheet download datasheet DP2540A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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DP2540A High Precision CC/CV Primary-Side PWM Power Switch GENERAL DESCRIPTION DP2540A 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.