Invention Grant
US07660090B1 Apparatus and method for input voltage transient protection with a low-voltage reset circuit
有权
用低压复位电路进行输入电压瞬变保护的装置和方法
- Patent Title: Apparatus and method for input voltage transient protection with a low-voltage reset circuit
- Patent Title (中): 用低压复位电路进行输入电压瞬变保护的装置和方法
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Application No.: US11845678Application Date: 2007-08-27
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Publication No.: US07660090B1Publication Date: 2010-02-09
- Inventor: Kevin Michael Daugherty
- Applicant: Kevin Michael Daugherty
- Applicant Address: US CA Santa Clara
- Assignee: National Semiconductor Corporation
- Current Assignee: National Semiconductor Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Darby & Darby P.C.
- Agent Matthew M. Gaffney
- Main IPC: H02H3/22
- IPC: H02H3/22

Abstract:
A circuit for voltage transient protection is provided. The circuit includes a voltage divider, a low-voltage reset circuit, and an input transistor. The input transistor receives an input voltage at the source of the input transistor, and provides a protected input voltage at the drain of the input transistor. The voltage divider provides a threshold voltage from the input voltage. The low-voltage reset circuit receives the threshold voltage. The low-voltage reset circuit causes the gate and source of the input transistor to short together when the low-voltage reset circuit is not in a reset state.
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