UPSRB01A中文资料HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR数据手册UTC规格书

描述 Description

The UTC UPSRB01A is a primary control unit for switch mode 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  UPSRB01A operates in primary-side sensing and regulation. Opto-coupler and TL431 could be eliminated. It also eliminates the need of loop compensation circuitry whilemaintaining stability.   The UTC  UPSRB01A achieves high precision CV/CC regulation and high power efficiency. It offers comprehensive protection coverage with auto-recovery

特性 Features

including Cycle-by-cycle current limiting,  output over voltage protection, VDD over voltage protection, feedback loop open protection, short circuit protection, leading edge blanking, VDD under voltage lockout, etc.    FEATURES   ±5% constant voltage regulation at universal AC input Primary side control without TL431 and opto-coupler High precision constant current regulation at universal AC input Programmable CV and CC regulation Eliminates control loop compensation circuitry Flyback topology in DCM operation Random frequency modulation to reduce system EMI Driver BJT switch Built-in leading edge blanking Built-in primary winding inductance compensation Open circuit protection Output over voltage protection VDD over voltage protection Short circuit protection Over temperature protection