Powerint PLC810PG LCD TV电源设计方案

Powerint 公司的PLC810PG 是集成了半桥驱动器的PFC和LLC离线控制器,其中的PFC部分是通用输入连续电流模式(CCM),不需要正弦输入参考,从而降低成本和外接元件.LLC控制器采用电流控制振荡器,控制范围可选择以支持电视的传统工作频率.主要应用32-60吋LCD TV电源,150-600W电源和LED街灯照明.本文介绍PLC810PG主要特性, 方框图, 典型应用电路,包括LCD TV 电源, PFC电路控制输入和LLC级, 输入电路和PFC功率级和待机电源电路图.

The PLC810PG is a combined PFC and LLC off-line controller with integrated high voltage half-bridge drivers. The PFC section of the PLC810PG is a universal input continuous current mode (CCM) design that does not require a sinusoidal input reference, thereby reducing system cost and external components.

The DC-DC controller drives an LLC resonant topology. This variable frequency controller provides high efficiency by switching the power MOSFETs at zero voltage, eliminating most switching losses. The LLC controller is built around a current controlled oscillator with a control range selected to support the traditional frequency of operation found in televisions.
..

查看全文