利用GaN/Si混合开关抑制动态导通电阻以提升Buck变换器效率

In this work, it is demonstrated that the buck converter using a GaN/Si hybrid switch can achieve an even higher power conversion efficiency than the one using a pure-GaN switch with the same ratings. By replacing one of the dual paralleled GaN HEMTs with a Si superjunction mosfet having the same voltage rating yet a slightly higher resistance, the total conduction loss, however, is significantly ...