Power transistor control circuit of an inverter arm
The control circuit for inverter arms addresses crosstalk-induced overvoltages by adjusting gate-source voltages during activation and deactivation periods, effectively preventing component damage and short-circuits without increasing switching losses or component count.
FR3119280B1Active Publication Date: 2026-06-26SAFRAN SA
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- SAFRAN SA
- Filing Date
- 2021-01-28
- Publication Date
- 2026-06-26
Smart Images
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Abstract
The invention relates to a control circuit (10) for a first switch comprising at least one transistor (T1), the first switch being arranged in series with a second switch in an inverter arm of a power supply device intended to power a load connected to the midpoint of the series arrangement of the first and second switches. The control circuit (10) is configured to adjust the gate-source voltage of at least one transistor of the first switch according to a control scheme comprising, during a period of deactivation of the first switch, increasing said gate-source voltage in a time window including the deactivation of the second switch and decreasing said gate-source voltage in a time window including the activation of the second switch. Figure for the abstract: Figure 3
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