NXP SSL4120 90W LED照明解决方案
NXP公司的SSL4120是集成了PFC控制器和半桥谐振转换器(HBC)控制器的电源控制器,能以上转换器来驱动分立MOSFET和谐振半桥配置来驱动两个分立功率MOSFET,火线电压从85 V到 305 V(AC),主要用在25 W到400 W之间的电源.本文介绍了SSL4120主要特性和优势,框图和应用电路,以及90W演示板SSL4120DB1123主要特性和优势,技术指标和框图,电路图,材料清单和PCB设计图.
The SSL4120 integrates a Power Factor Corrector (PFC) controller and a controller for a Half-Bridge resonant Converter (HBC) in a multi-chip IC. It provides the drive function for the discrete MOSFET in an up-converter and for the two discrete power MOSFETs in a resonant half-bridge configuration.
Efficient PFC operation is achieved by implementing functions for Quasi-Resonant (QR) operation at high-power levels and QR with valley skipping at lower power levels. OverCurrent Protection (OCP), OverVoltage Protection (OVP) and demagnetization sensing ensure safe operation under all conditions
The HBC module is a high-voltage controller for a zero-voltage switching LLC resonant converter. It contains a high-voltage level shift circuit and several protection circuits including OCP, open-loop protection, capacitive mode protection and a general purpose latched protection input.
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