RS2112 Datasheet | PTC

RS2112 High Precision CC/CV Primary-Side PWM Power Switch DESCRIPTION RS2112 is a high performance offline PSR controller 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. 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, PFM operations are utilized to achieve high performance and high efficiency. In addition, good load regulation is achieved by the built-in cable drop pensation. The...