Powerint LCS702HG 150W电源参考设计(RDR239)
Powerint公司的HiperLCS系列LCS702HG集成了多功能控制器,高边和低边栅极驱动器,以及半桥配置的两个功率MOSFET,可节省30多个外接元件,工作频率高达1MHz,20%,50%和100%负载点的平均效率为95%,主要用在高效电源(80PLUS 银,金和白金),LCD TV电源和LED街区和区域照明.本文介绍了HiperLCS系列主要特性,方框图, 150 W 激光打印机电源图以及采用HiperLCSTM LCS702HG的150W LLC高压DC/DC谐振转换器参考设计主要特性,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.
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
• Precise duty symmetry balances output rectifier current, improving efficiency
• 50% ±0.3% typical at 300 kHz
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