Gate driver output protection circuit
AssigneeSkyworks Solutions, Inc.
InventorsPéter Onódy, Tamás Marozsák, Michael R. May, Fernando Naim Lavalle Aviles, Patrick De Bakker
Life of this patent
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Abstract
A method for protecting a system including a driver integrated circuit includes receiving a driver input signal. The method includes driving an output signal externally to the driver integrated circuit. The output signal is driven based on the driver input signal and an indication of a delay between receipt of an edge of the driver input signal and arrival of a corresponding edge of the output signal at an output node coupled to a terminal of the driver integrated circuit.
Claims20
A method for protecting a system including a driver integrated circuit, the method comprising:
- receiving a driver input signal;
- generating a first indication of whether a rising edge of the driver input signal is delayed in an output signal at an output node of the driver integrated circuit coupled to a terminal of the driver integrated circuit;
- generating a second indication of whether a falling edge of the driver input signal is delayed in the output signal at the output node;
- and
- generating an error signal based on the first indication and the second indication;
- and
- driving the output signal externally to the driver integrated circuit, the output signal being driven based on the driver input signal and the error signal.
An integrated circuit configured to control a drive device, the integrated circuit comprising:
- a driver circuit configured to drive an output signal to a terminal of the integrated circuit, the output signal being driven based on a driver input signal and an error signal;
- and
- a logic circuit configured to generate a first indication of whether a rising edge of the driver input signal is delayed in the output signal, to generate a second indication of whether a falling edge of the driver input signal is delayed in the output signal, and to generate an error signal based on the first indication and the second indication.
An electronics system comprising:
- a gate driver integrated circuit including a driver circuit configured to drive an output signal to a terminal of the gate driver integrated circuit, the output signal being driven based on a driver input signal and an error signal, and a logic circuit configured to generate a first indication of whether a rising edge of the driver input signal is delayed in the output signal, to generate a second indication of whether a falling edge of the driver input signal is delayed in the output signal, and to generate an error signal based on the first indication and the second indication;
- and
- a drive transistor coupled to the terminal of the gate driver integrated circuit to receive the output signal.
Dependencies are inferred from the claim text.