Circuit providing reverse current protection for high-side driver

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10804691
APP PUB NO 20190280472A1
SERIAL NO

15913465

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Abstract

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An electronic control unit (ECU) operates between first and second voltage rails and includes an amplifier circuit and a single current sense circuit coupled to carry a signal to a bus pin and to protect the bus pin from both a short to ground and a short to battery. The single current sense circuit includes a switch circuit that passes the signal to the bus pin and a forward current sensing circuit that provides a second current that is proportional to an output current at the bus pin. The forward current sensing circuit causes the second current to be substantially zero when voltage on the bus pin is above a given value. The single current sense circuit also includes a forward current protection circuit and a reverse current switching circuit that receives the second current and closes a connection to the second voltage when the second current is zero.

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Patent Owner(s)

  • TEXAS INSTRUMENTS INCORPORATED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Duryea, Timothy Paul Dallas, US 8 18
Easwaran, Sri Navaneethakrishnan Plano, US 16 39

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