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.: US13827078Application Date: 2013-03-14
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Publication No.: US09054527B1Publication Date: 2015-06-09
- Inventor: Chia-Te Fu , Sintiat Te , Chiayao S. Tung
- Applicant: IML International
- Applicant Address: KY
- Assignee: IML International
- Current Assignee: IML International
- Current Assignee Address: KY
- Agency: Aka Chan LLP
- Main IPC: H02H9/08
- IPC: H02H9/08 ; H02H3/10

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; after a delay, 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.
Information query