PowerInt LCS700HG 100W高效LCD TV电源(DER282)方案

PowerInt公司的LCS700-708是集成了LLC控制器,高压功率MOSFET和驱动器的HiperLCS 系列产品,能节省30%的外接元件,最高工作频率达1MHz,正常稳定工作高达500kHz,大大降低了磁性元件SMD电容元件尺寸,满负载的效率大于94%,50%负载时大于93%,主要用在高效电源,LCD TV电源,LED街灯和区域照明,打印机电源和音频放大器.本文介绍了LCS700-708主要特性,方框图, LCD TV和PC主电源应用电路, 150W激光打印机电源电路以及采用HiperLCSTM LCS700HG 的100W小型LLC DC/DC转换器的主要特性和指标,电路图和材料清单,PCB布局图.

LCS700-708 :HiperLCS Family Integrated LLC Controller, High-Voltage Power MOSFETs and Drivers

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.

LCS700-708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
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