Switch circuit and control method therefor
By introducing resonant capacitors and resonant inductors into the switching circuit, zero-voltage switching of the switching transistor is achieved, solving the problem of high switching losses in high-voltage and high-frequency scenarios and improving voltage conversion efficiency.
WO2026124300A1PCT designated stage Publication Date: 2026-06-18RIGOL ENTERPRISE DEVELOPMENT (SHANGHAI) CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- RIGOL ENTERPRISE DEVELOPMENT (SHANGHAI) CO LTD
- Filing Date
- 2025-12-02
- Publication Date
- 2026-06-18
Smart Images
Figure CN2025139254_18062026_PF_FP_ABST
Abstract
A switch circuit and a control method therefor. The switch circuit comprises a switch bridge arm. The switch bridge arm comprises a first switching transistor, a second switching transistor, a first capacitor, a second capacitor, and an auxiliary switch assembly. The auxiliary switch assembly comprises a third switching transistor, a resonant capacitor, and a resonant inductor, wherein the resonant capacitor is connected in parallel to the third switching transistor, and the resonant inductor is connected in series to the third switching transistor. The first switching transistor is connected in series to the second switching transistor, the first switching transistor is connected in parallel to the first capacitor, and the second switching transistor is connected in parallel to the second capacitor. The auxiliary switch assembly is connected in parallel to the second switching transistor by means of a first end of the auxiliary switch assembly and a second end of the auxiliary switch assembly.
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