Switching element drive device
The switching element drive device addresses the challenge of sinusoidal current changes during resonance by using an inductor and capacitor configuration to control voltage in multiple stages, achieving efficient active gate control and reduced switching losses.
JP2026089366APending Publication Date: 2026-06-01TOYOTA INDUSTRIES CORP +1
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- TOYOTA INDUSTRIES CORP
- Filing Date
- 2024-11-20
- Publication Date
- 2026-06-01
Smart Images
Figure 2026089366000001_ABST
Abstract
To perform active gate control. [Solution] The switching element drive device DD1 comprises an inductor L, a capacitor C, and a control unit 30. The inductor L is arranged in series with the gate G. The capacitor C is connected between the gate G and the source S. The control unit 30 generates multiple periods in which the inductor current flowing through the inductor L is only positive due to resonance between the capacitor C and the inductor L, thereby increasing the voltage between the gate G and the source S in multiple stages, and performing a turn-on process to turn on the switching element Q1.
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