TI UCC28180满负荷效率高达95%的PFC控制方案

TI公司的UCC28180是工作在连续导通模式(CCM)的PFC控制器,可得到高的电源效率,低电流失真和极好的电压调整,非常适合于100瓦到几千瓦的AC/DC转换器,开关频率从18kHz到250kHz,支持功率MOSFET和IGBT开关,主要用在服务器和台式电源,白色家电,工业电源和平板电视如PDP,LCD和LED TV．本文介绍了UCC28180主要特性，框图,以及360W评估板UCC28180EVM-573主要特性,电路图,测试连接图,材料厂清单和PCB元件布局图.　

The UCC28180 is a flexible and easy-to-use, 8-pin, active Power Factor Correction (PFC) controller that operates under Continuous Conduction Mode (CCM) to achieve high Power Factor, low current distortion and excellent voltage regulation of boost pre-regulators in AC - DC front-ends. The controller is suitable for universal AC input systems operating in 100-W to few-kW range with the switching frequency programmable between 18 kHz to 250 kHz, to conveniently support both power MOSFET and IGBT switches. An integrated 1.5-A and 2-A (SRC-SNK) peak gate drive output, clamped internally at 15.2 V (typical), enables fast turn-on, turn-off and easy management of the external power switch without the need for buffer circuits.
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