- 专利标题: Controlling current limits in current limiting circuits
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申请号: US15857135申请日: 2017-12-28
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公开(公告)号: US10348280B2公开(公告)日: 2019-07-09
- 发明人: Ankur Chauhan , Subrato Roy
- 申请人: TEXAS INSTRUMENTS INCORPORATED
- 申请人地址: US TX Dallas
- 专利权人: Texas Instruments Incorporated
- 当前专利权人: Texas Instruments Incorporated
- 当前专利权人地址: US TX Dallas
- 代理商 Tuenlap Chan; Charles A. Brill; Frank D. Cimino
- 优先权: IN201741008256 20170309
- 主分类号: G01R19/00
- IPC分类号: G01R19/00 ; G01R1/30 ; H02H5/04 ; G05F1/00 ; G05F3/16 ; G01K3/10 ; H03K5/08 ; G05F1/46 ; G05F1/573
摘要:
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.
公开/授权文献
- US20180262184A1 CONTROLLING CURRENT LIMITS IN CURRENT LIMITING CIRCUITS 公开/授权日:2018-09-13
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