Invention Grant
- Patent Title: Actively tracking switching speed control of a power transistor
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Application No.: US16943318Application Date: 2020-07-30
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Publication No.: US11031929B1Publication Date: 2021-06-08
- Inventor: Robert Maier , Mark-Matthias Bakran , Daniel Domes , Zheming Li , Franz-Josef Niedernostheide
- Applicant: Infineon Technologies AG
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Design IP
- Main IPC: H03K17/042
- IPC: H03K17/042 ; H03K17/687 ; H03K17/95

Abstract:
A method of driving a transistor includes generating an off-current during a plurality of turn-off switching events to control a gate voltage at a gate terminal of the transistor, wherein generating the off-current includes sinking a first portion of the off-current from the gate terminal to discharge a first portion of the gate voltage, and sinking, during a boost interval, a second portion of the off-current from the gate terminal to discharge a second portion of the gate voltage; measuring a transistor parameter indicative of an oscillation of a drain-source voltage of the transistor for a first turn-off switching event during which the transistor is transitioned off; activating the first portion of the off-current for a second turn-off switching event; and activating the second portion of the off-current for the second turn-off switching event, including regulating a length of the boost interval based on the measured transistor parameter.
Information query
IPC分类: