发明授权
- 专利标题: Driving circuit for a switching transistor and a driving device including the same
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申请号: US17505409申请日: 2021-10-19
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公开(公告)号: US12021493B1公开(公告)日: 2024-06-25
- 发明人: Huafen Ouyang , Hualiang Li , Dongxin Jin
- 申请人: SANTAK ELECTRONIC (SHENZHEN) CO., LTD.
- 申请人地址: CN Shenzhen
- 专利权人: Santak Electronic (Shenzhen) Co., Ltd.
- 当前专利权人: Santak Electronic (Shenzhen) Co., Ltd.
- 当前专利权人地址: CN Shenzhen
- 代理机构: Stanek Lemon Crouse & Meeks, PA
- 优先权: CN 2011124650.9 2020.10.20
- 主分类号: H03F3/26
- IPC分类号: H03F3/26 ; H03F1/30 ; H03F1/52 ; H03F3/24
摘要:
The present invention provides a driving circuit for a switching transistor and a driving device including the same. The driving circuit includes: a power amplifier, including a first power transistor and a second power transistor that are connected between a first direct current voltage terminal and a second direct current voltage terminal and are arranged in a push-pull circuit; a first voltage regulating device, connected between an input terminal of the power amplifier and a control terminal of the first power transistor; a third power transistor, connected between an output terminal of the power amplifier and the second direct current voltage terminal or a grounding terminal; a first voltage dividing device, connected between the input terminal and the output terminal of the power amplifier; and a transistor control circuit, configured to: control the third power transistor to be turned on when the switching transistor is located in a short-circuit path, and control the third power transistor to be turned off when the switching transistor is controlled to be turned on and is not located in the short-circuit path. The driving circuit of the present invention reduces the power consumption of the switching transistor and extends the time for short-circuit protection.
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