Microchip dsPIC33F 200W DC-DC LLC参考设计

Microchip 公司的200W DC/DC LLC谐振转换器参考设计采用dsPIC33F系列DSC器件，输入电压范围350-420Vdc，正常输入电压400V，12V DC输出，初级和次级有高的绝缘电压（4kV）。高效率是采用半桥转换器的零电压开关（ZVS）和同步整流器的零电流开关（ZCS）。效率达95%，输出功率200W，谐振频率210kHz。调整频率150kHz–230kHz.本文介绍了200W DC/DC LLC谐振转换器参考设计主要特性和指标，方框图，反激电路图以及200W DC-DC LLC参考设计电路图和材料清单（BOM）。

DC/DC LLC Reference Design Using the dsPIC® DSC

DC/DC LLC RESONANT CONVERTER Reference Design

Microchip’s 200W DC/DC LLC Resonant Converter Reference Design operates over a wide input voltage range (350 - 420Vdc) with a nominal input of 400V, providing a 12V DC output, while maintaining high-voltage isolation between the primary and secondary. High efficiency is achieved through Zero Voltage Switching (ZVS) on the half-bridge converter and Zero Current Switching (ZCS) on the synchronous rectifier. A synchronous rectifier is implemented over the traditional full wave rectifier for improved efficiency. The LLC Resonant Converter Reference Design utilizes Microchip’s digital power conversion dsPIC for unique “adaptive” control of the half-bridge converter and synchronous rectifier.
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