基于IC控制器CM6800的LCD电视机电源设计

Design of Power Supply for LCD TV Based on IC Controller CM6800

以新一代功卒因数校正芯片CM6800为核心，提出了一种宽电压输入、固定电压输出的LCD电视机电源的设计方案，重点讲速了CM6800的。主要特性度各主要器件参数选择。该方案能在80～265V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。该方案完全能满足LCD电视机电源的要求，并已得到成功应用。

The LCD power supply with universal input and fixed output voltage is analyzed and then designed based on CM6800. The main property of CM6800 and the main components parameter＇s choice are discussed. It can achieve a fixed output of DC voltage in the universal input range of AC 80～265 V. It owns the advantages of high efficiency,low total harmonic distortion,PF near to 1. The results of the study meet the requirment of LCD power supply perfectly and have been used successfully.