USRB01A Datasheet | Unisonic Technologies

UNISONIC TECHNOLOGIES CO., LTD Preliminary LINEAR INTEGRATED CIRCUIT HIGH PRECISION CC/CV PRIMARY SIDE SWITCH - DESCRIPTION The UTC USRB01A is a primary controller for charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. The UTC USRB01A operates in primary-side sensing and regulation. Opto-coupler and TL431 could be eliminated. It also eliminates the need of loop pensation circuitry while maintaining stability. The UTC USRB01A achieves high precision CV/CC regulation...