Invention Grant
- Patent Title: Linear switch circuits and methods
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Application No.: US16984015Application Date: 2020-08-03
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Publication No.: US11018663B2Publication Date: 2021-05-25
- Inventor: Roland Karl Son , Craig Bennett Greenberg , Indumini Ranmuthu
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Michelle F. Murray; Charles A. Brill; Frank D. Cimino
- Main IPC: H03K17/08
- IPC: H03K17/08 ; H03K17/14 ; H03K17/687

Abstract:
A system includes an output terminal and a linear switch circuit coupled to the output terminal. The linear switch circuit includes a first power field-effect transistor (FET) having: a first channel width; a control terminal; a first current terminal; and a second current terminal, wherein the second current terminal is coupled to the output terminal. The linear switch circuit also includes a second power FET having: a second channel width smaller than the first channel width; a control terminal; a first current terminal coupled to the first current terminal of the first power FET; and a second current terminal coupled to the output terminal. The system also comprises a control circuit coupled to the control terminal of the first power FET and to the control terminal of the second power FET. The control circuit detects a drain-to-source voltage (VDS) saturation condition and controls the first and second power FETs accordingly.
Public/Granted literature
- US20210091764A1 LINEAR SWITCH CIRCUITS AND METHODS Public/Granted day:2021-03-25
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