Invention Grant
- Patent Title: Methods and apparatus for power switch fault protection
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Application No.: US15206014Application Date: 2016-07-08
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Publication No.: US10312898B2Publication Date: 2019-06-04
- Inventor: Ariel Dario Moctezuma , Srinath Hosur
- 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 Michael A. Davis, Jr.; Charles A. Brill; Frank D. Cimino
- Main IPC: H03K17/082
- IPC: H03K17/082 ; H02H3/26 ; H02H3/087 ; H02H3/10

Abstract:
In described examples, a switch has: a first current handling terminal coupled to a supply source terminal; and a second current handling terminal coupled to an output terminal. A comparator has: a first input coupled to the second current handling terminal; and a second input. A voltage reference source has: a first terminal coupled to the first current handling terminal; and a second terminal coupled to the second input of the comparator. A slew rate detector has an input coupled to the second current handling terminal. A switch controller has: a first input coupled to the comparator output; and a second input coupled to an output of the slew rate detector. The switch controller is coupled to output a signal to cause the switch to open when the comparator detects an over-current condition through the switch while the slew rate detector detects a negative slew rate.
Public/Granted literature
- US20170012617A1 Methods and Apparatus for Power Switch Fault Protection Public/Granted day:2017-01-12
Information query
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