AX2535 Datasheet | AXElite

High Precision CC/CV Primary-Side PWM Power Switch  GENERAL DESCRIPTION AX2535 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, the photo-coupler and TL431 could be eliminated. Proprietary Constant Voltage (CV) and Constant Current (CC) control is 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 pensation. € Device operates in PFM in CC mode as well at large b Ñ y - load condition and it operates w`R in PWM with frequency reduction at light/medium load. m Û V power on soft AX2535 offers omstart control and protection coverage with c . h c Cycle-by-Cycle auto-recovery Features including current limiting, VDD OVP, VDD clamp e t o f and UVLO. Excellent EMI performance is achieved by frequency shuffling technique. .go w w High precision w constant voltage (CV) and constant current (CC) can be achieved by AX2535. VO ± 5% IO ICC Fig.1. CC/CV control characteristic 1/12 Axelite Confidential Materials, do not copy or distribute without written consent.  Features ±5% Constant Voltage Regulation at Universal AC input High Precision Constant Current Regulation at Universal AC input Primary-Side Sensing and Regulation Without TL431 and photo-coupler Programmable CV and CC Regulation Adjustable Constant Current and Output Power Setting Built-in Secondary Constant Current Control with Primary-Side Feedback Built-in Adaptive Current Peak Regulation Built-in Primary winding inductance pensation Programmable Cable drop pensation Power on Soft Start Built-in Leading Edge Blanking (LEB) Cycle-by-Cycle Current Limiting VDD Under Voltage Lockout with Hysteresis...