PN8571 Overview
The PN8571 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 ponents. PN8571 operates in primary-side sensing and regulation, so opto-coupler and TL431 could be eliminated. In CV mode, multi-mode and quasi resonant technique is utilized to achieve high efficiency, avoid audible noise and make...
PN8571 Key Features
- Internal BJT switch
- Multi-mode and Quasi-Resonant technique
- ±5% CC Regulation at Universal AC input
- Primary-side Sensing and Regulation without TL431
- Programmable Cable Drop pensation
- No-need Control Loop pensation Capacitor
- Excellent Protection include
- Over Temperature Protection (OTP)
- VDD Under/Over Voltage Protection(UVLO&OVP)
- Cycle-by-Cycle Current Limiting (OCP)