Invention Grant
- Patent Title: Controlling current limits in current limiting circuits
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Application No.: US15857135Application Date: 2017-12-28
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Publication No.: US10348280B2Publication Date: 2019-07-09
- Inventor: Ankur Chauhan , 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 Tuenlap Chan; Charles A. Brill; Frank D. Cimino
- Priority: IN201741008256 20170309
- Main IPC: G01R19/00
- IPC: G01R19/00 ; G01R1/30 ; H02H5/04 ; G05F1/00 ; G05F3/16 ; G01K3/10 ; H03K5/08 ; G05F1/46 ; G05F1/573

Abstract:
An example current limiting apparatus comprises a first transistor to carry a first current; a sense transistor coupled to the first transistor, the sense transistor to carry a sense current that is a function of the first current; a first amplifier coupled to the first transistor and the sense transistor, the amplifier to achieve a common voltage potential on terminals of the first and the sense transistors; a second amplifier coupled to the first amplifier and the sense transistor, the second amplifier to control the first and sense transistors based on the sense current; and a circuit coupled to the first and second amplifiers, the circuit to control an input to the second amplifier based on an input to the first amplifier such that a current limit of the first transistor remains below a programmed current limit of the first transistor.
Public/Granted literature
- US20180262184A1 CONTROLLING CURRENT LIMITS IN CURRENT LIMITING CIRCUITS Public/Granted day:2018-09-13
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