Invention Grant
- Patent Title: Current sensing and control for a transistor power switch
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Application No.: US15341205Application Date: 2016-11-02
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Publication No.: US10014851B2Publication Date: 2018-07-03
- Inventor: Ankur Chauhan , Sudheer Prasad , Md. Abidur Rahman , Subrato Roy
- 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 Lawrence J. Bassuk; Charles A. Brill; Frank D. Cimino
- Main IPC: H03K17/00
- IPC: H03K17/00 ; H03K17/082 ; H03K17/687 ; H01L23/525 ; G01R19/00

Abstract:
An apparatus includes: a first power transistor having a first current conduction path coupled between an input for receiving a supply voltage and a node and a first gate terminal coupled to a first gate control signal; a second power transistor having a second current conduction path coupled between the node and an output terminal for supplying a load current to a load; and a second gate terminal coupled to a second gate control signal; and a current sense transistor having a third gate terminal coupled to the first gate control signal, and outputting a sense current. The apparatus further includes: a differential amplifier having an output signal, and a feedback transistor having a gate terminal coupled to the output signal of the differential amplifier; and a resistor coupled between a monitor node and ground.
Public/Granted literature
- US20180123578A1 Current Sensing and Control for a Transistor Power Switch Public/Granted day:2018-05-03
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