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引用次数: 33
摘要
本文提出了一种用于LLC谐振变换器的高效率、高功率密度矩阵变压器结构。矩阵变压器有助于减小绕组的漏感和交流电阻。采用磁通抵消法减小磁芯尺寸和损耗。同步整流器(SR)器件和输出电容集成到二次绕组中，以消除终端相关的绕组损耗、通损和漏感。建立了一个1.6 MHz 390 /12 V 1kW LLC谐振变换器原型来验证所提出的结构。
In this paper, a high efficiency high power density matrix transformer structure for LLC resonant converters is proposed. Matrix transformer is help to reduce leakage inductance and the AC resistance of windings. Flux cancellation method is utilized to reduce core size and loss. Synchronous Rectifier (SR) devices and output capacitors are integrated into secondary windings to eliminate termination related winding losses, via loss and leakage inductance. An 1.6 MHz 390 /12 V 1kW LLC resonant converter prototype is built to verify the proposed structure.
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