High Precision CC/CV Primary-Side Converter
Product：PN8355
1、Product application

2、General Description
The PN8355 consists of a high precision CC/CV primary side controller and a 650V power MOSFET, specifically designed for a highperformance low power AC/DC charger and LED lighting with minimal external components. PN8355 operates in primary-side sensingand regulation, so opto-coupler and TL431 could be eliminated. PN8355 offers complete protection coverage with automaticself-recovery feature including Cycle-by-Cycle current limiting protection (OCP), over voltage protection (OVP) and feedback loop openprotection (OLP), over temperature protection (OTP) and short circuit protection etc. Internal HV Start-up circuit and the chip’s very lowconsumption help to meet the strict standby power standard. In CC control, the current and output power setting can be adjustedexternally by the sense resistor Rcs at CS pin. In CV control, PFM operations are utilized to achieve high performance and highefficiency. In addition, good load regulation is achieved by the built-in cable drop compensation.
3、 Features
Internal 650 V avalanche-rugged power MOSFET
±5% Constant current Regulation at Universal AC input
Primary-side Sensing and Regulation Without TL431 and Opt coupler
Programmable CV and CC Regulation
Programmable Cable Drop Compensation
Built-in Primary winding inductance compensation
Internal HV Start-up Circuit
Excellent Protection Coverage:
Over Temperature Protection (OTP)
VDD Under Voltage Lockout (UVLO)
Cycle-by-Cycle Current Limiting (OCP)
Open Loop Protection (OLP)
VDD Over Voltage Protection (OVP)
Auto- recovery protection Mode
4、Applications
Switch AC/DC Adaptor and Battery Charger
LED Light
5、Package/Order Information

6、Typical Application


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