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A 2-MHz 945-V Input High-Efficiency Three-Switch ZVS Step-Up-Down Hybrid Converte
提出一种三开关零电压开关（ZVS）升降压混合DC-DC转换器，适用于宽输入范围应用，具有高效率和小体积。
9-45V输入范围，48W最大输出功率，2MHz工作频率，97.6%和96%峰值效率
ZVS升降压转换器GaN晶体管高效率飞电容
▸采用三开关结构减少辅助分支和功率FET
▸利用飞电容降低主电感电流和导通损耗
▸实现所有功率FET的ZVS开启，消除开关损耗
Abstract
This article presents a three-switch zero-voltage
switching (ZVS) step-up/-down hybrid dc–dc converter with
e-mode GaN transistors for wide-input-range applications. With
a flying capacitor, the proposed hybrid converter saves one
auxiliary branch for establishing ZVS and one power FET
compared with the conventional buck–boost counterpart, thereby
reducing the converter volume and power loss. The capability
of having ZVS turn-
ON of all power FETs enables the proposed
converter to operate in the