DP2540A - DEVELOPER MICROELECTRONICS

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

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 .

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. TYPICAL APPLICATION FEATURES
■ ± 5% Constant Voltage Regulation and Current Regulation at Universal AC Input
■ Primary Side Regulation (PSR) Without TL431 and Opto-coupler
■ No Need for Control Loop Compensation
■ Programmable CV and CC Regulation
■ Multi-Mode PWM/PFM Operation
■ Ou.