Invention Grant
- Patent Title: Short circuits and power limit protection circuits
- Patent Title (中): 短路和功率限制保护电路
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Application No.: US12938292Application Date: 2010-11-02
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Publication No.: US08154346B2Publication Date: 2012-04-10
- Inventor: Chiayao S. Tung
- Applicant: Chiayao S. Tung
- Applicant Address: BM Hamilton
- Assignee: IML International Ltd
- Current Assignee: IML International Ltd
- Current Assignee Address: BM Hamilton
- Agency: Sidley Austin LLP
- Main IPC: H02H7/20
- IPC: H02H7/20

Abstract:
In one embodiment, a method includes: detecting one of a short-to-ground condition and a short-to-supply condition at an output node; selectively activating a feedback control transistor according to the detecting; detecting a first current passing through a first transistor using a second transistor sized to be smaller than the first transistor; mirroring the detected current using a plurality of transistors to form a feedback current; and providing the feedback current to a gate electrode of the first transistor according to the selectively activating the feedback control transistor.
Public/Granted literature
- US20110115564A1 Short Circuits and Power Limit Protection Circuits Public/Granted day:2011-05-19
Information query
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