PN8570
Description
The PN8570 consists of a Low Standby-Power QuasiResonant (QR) Primary-Side controller and BJT, specifically designed for a high performance AC/DC charger or adapter with minimal external components. PN8570 operates in primary-side sensing and regulation, so opto-coupler and TL431 could be eliminated.
Key Features
- Internal BJT switch
- Multi-mode and Quasi-Resonant control technique
- ±5% CC Regulation at Universal AC input
- Primary-side Sensing and Regulation without TL431 and Opto-coupler
- Programmable Cable Drop Compensation
- No-need Control Loop Compensation Capacitor
- Excellent Protection include: Over Temperature Protection (OTP) VDD Under/Over Voltage Protection(UVLO&OVP) Cycle-by-Cycle Current Limiting (OCP) CS Short/Open Protection (CS O/SP) Open Loop Protection(OLP) AC overvoltage and brownout protection Package/Order Information SOP7 VDD GND OV/BO FB C CS C Order codes PN8570LSSC-R1 PN8570MSSC-R1 PN8570HSSC-R1 Package SOP7 SOP7 SOP7 Typical Power 85~265VAC 5W 6W 8W Io Typical Circuit AC 85~265V Snubber DC Output FB GND OTP Block CC/CV control Cable comp OV/BO AC Check VDD C SUPPLY &UVLO PWM Switch &Base Driver CS OCP PN8570
