Invention Grant
- Patent Title: Methods and circuits for reverse battery protection
- Patent Title (中): 反向电池保护的方法和电路
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Application No.: US14222925Application Date: 2014-03-24
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Publication No.: US09331478B2Publication Date: 2016-05-03
- Inventor: Thomas J. Reiter , Ibrahim S. Kandah
- Applicant: Thomas J. Reiter , Ibrahim S. Kandah
- Applicant Address: US TX Austin
- Assignee: FREESCALE SEMICONDUCTOR, INC
- Current Assignee: FREESCALE SEMICONDUCTOR, INC
- Current Assignee Address: US TX Austin
- Agency: The Mason Group Patent Specialists, LLC
- Agent Valerie M. Davis
- Main IPC: H02H3/00
- IPC: H02H3/00 ; H02H11/00

Abstract:
A circuit is configured for providing reverse battery protection. The circuit includes a load driver circuit having at least a first half-bridge circuit with topside and bottomside transistors coupled at a midpoint node by a first current terminal of both the topside and bottomside transistors. A second current terminal of the bottomside transistor is coupled to a voltage common node. The circuit also includes: a reverse battery protection transistor having a first current terminal coupled to a battery supply node and a second current terminal coupled to a second current terminal of the topside transistor; a bootstrap capacitor having a first terminal coupled to a the midpoint node between the topside and bottomside transistors of the first half-bridge circuit; and a diode having an anode coupled to a second terminal of the bootstrap capacitor and a cathode coupled to a control terminal of the reverse battery protection transistor.
Public/Granted literature
- US20150270703A1 Methods and Circuits for Reverse Battery Protection Public/Granted day:2015-09-24
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