Invention Grant
- Patent Title: Driver circuit with controlled gate discharge current
- Patent Title (中): 具有受控栅极放电电流的驱动电路
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Application No.: US14199313Application Date: 2014-03-06
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Publication No.: US09000811B2Publication Date: 2015-04-07
- Inventor: Fei Wang , Wen Li Bai
- Applicant: STMicroelectronics R&D (Shanghai) Co. Ltd.
- Applicant Address: CN Shanghai
- Assignee: STMicroelectronics R&D (Shanghai) Co. Ltd
- Current Assignee: STMicroelectronics R&D (Shanghai) Co. Ltd
- Current Assignee Address: CN Shanghai
- Agency: Gardere Wynne Sewell LLP
- Priority: CN201310096033 20130318
- Main IPC: H03K3/00
- IPC: H03K3/00 ; H03K17/04 ; H03K17/00

Abstract:
The gate of a drive transistor having a drain and source is discharged by a circuit including a sensing circuit configured to sense a drain-to-source voltage of the drive transistor. A first current sink path is coupled to the gate of the drive transistor. The first current sink path applies a high discharge current to the gate of the drive transistor when the sensing current senses a lower drain-to-source voltage of the drive transistor. A second current sink path is also coupled to the gate of the drive transistor. The second current sink path is configured to apply a low discharge current to the gate of the drive transistor when the sensing current senses a higher drain-to-source voltage of the drive transistor.
Public/Granted literature
- US20140266322A1 DRIVER CIRCUIT WITH CONTROLLED GATE DISCHARGE CURRENT Public/Granted day:2014-09-18
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