Powerint LCS701HG 125 W LCD TV电源解决方案(DER-270)

PowerInt公司的HiperLCS系列具有多功能控制器,高边和低边栅极驱动器,以及有两个半桥连接的功率MOSFET的综合LLC功率级,节省了多达30个外接元件,最大工作频率1MHz,稳态工作频率高达500kHz,满负载效率高达98%,主要用在高效电源(80+银,金和白金),LCD TV电源,LED街区和区域合作照明,打印机电源和音频放大器电源.本文介绍了HiperLCS系列主要特性,方框图, LCD TV和PC主电源应用电路图, 150 W激光打印机电源以及采用LCS701HG的125 W LCD TV电源电路图,材料清单和PCB布局图.

The HiperLCS is an integrated LLC power stage incorporating a multi-function controller, high-side and low-side gate drivers, plus two power MOSFETs in a half-bridge configuration. Figure 1 shows a simplified schematic of a HiperLCS based power stage where the LLC resonant inductor is integrated into the transformer.

The variable frequency controller provides high efficiency by switching the power MOSFETs at zero voltage (ZVS), eliminating switching losses.

HiperLCS系列主要特性:

• LLC half-bridge power stage incorporating controller, high and low-side gate drives, and high-voltage power MOSFETs

• Eliminates up to 30 external components

• High maximum operating frequency of 1 MHz

• Nominal steady-state operation up to 500 kHz

• Dramatically reduces magnetics size and allows use of SMD ceramic output capacitors
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