Output Driver Having Reduced Electromagnetic Susceptibility and Associated Methods
OwnerWashington Lamar, Maxim Klebanovinventors
Life of this patent
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Abstract
An electronic circuit includes a driver circuit having an output terminal that can be coupled to a load to drive the load. A control circuit may be coupled to the driver circuit for controlling the driver circuit. A transistor may be coupled in series between the driver circuit and the output terminal. The transistor may have a first terminal coupled to the driver circuit and a second terminal coupled to the output terminal. A biasing circuit may be coupled to a gate terminal of the transistor and configured to bias the transistor to a conducting state. The biasing circuit may have sufficient drive strength to maintain the transistor in the conducting state in the presence of electromagnetic interference.
Claims18
An electronic circuit comprising:
- a driver circuit having an output terminal that can be coupled to a load to drive the load;
- a control circuit coupled to the driver circuit for controlling the driver circuit;
- a transistor coupled in series between the driver circuit and the output terminal, the transistor having a first terminal coupled to the driver circuit and a second terminal coupled to the output terminal;
- and
- a biasing circuit coupled to a gate terminal of the transistor and configured to bias the transistor to a conducting state.
A method comprising:
- providing an output terminal that can be coupled to load;
- driving the load with a driver circuit;
- controlling the driver circuit with a control circuit coupled to the driver circuit;
- coupling a transistor in series between the driver circuit and the output terminal, the transistor having a first terminal coupled to the driver circuit, a second terminal coupled to the output terminal, and a gate terminal;
- and
- coupling the gate terminal of the transistor to a biasing circuit configured to bias the transistor in a conducting state.
Dependencies are inferred from the claim text.