AC0027S

AC0027S High performance primary sensing regulator (PSR) GENERAL DESCRIPTION FEATURES AC0027S is high performance primary ◆ Built-in 850V power BJT; sensing regulator (PSR) and monolithic ◆ PSR control, eliminates optocoupler and switch power controller which is designed TL431; for small-power supply equipment with ◆ Accurate CV/CC control current mode control. Built-in accurate ◆ Hysteresis over-temperature protection CV/CC control circuit, eliminates optocoupler, TL431 and its related loop devices. High integration design, a high performance power BJT and PFM controller and all kinds of protection circuits in one IP chip, to minimize the peripheral components to save the cost greatly. AC0027S can be simply designed a typical flyback switch converter, the unique driving technology promotes the characteristics of withstand H voltage and achieves excellent converting TC efficiency (OTP) circuit ◆ Higher efficiency and meet Level 6 efficiency standards ◆ Output voltage protection (OVP/UVP) ◆ < 100 mW no-load consumption ◆ Auto-Restart function ◆ Ultra-low start-up current ◆ Good EMC characteristic allows thesimple EMC circuit APPLICATIONS ◆ Intelligent mobile phone/small size tablet computer ◆ Digital cameras and other small digital products ◆ RCC solutions Replace APPLICATION CIRCUIT HO VIN + C1 VS LP NP NS VAUX VO + Co IOUT Vout ±5% HV Driver CS Naux RFB1 ±10% FB GND RCS RFB2 Iout OUTput CC/CV VI Characteristic www.hotchip.com.cn 1/8 Ver1.0...