System and method for driving a transistor
First Claim
1. A circuit for driving a control terminal of a switching transistor, the circuit comprising:
- a driver comprising an output configured to be coupled to the control terminal of the switching transistor, a first power supply terminal configured to be coupled to a first terminal of a floating power supply, a second power supply terminal configured to be coupled to a second terminal of the floating power supply, and a switching input terminal configured to receive a switching signal; and
a bias circuit having an output terminal configured to be coupled to a common-mode control terminal of the floating power supply, wherein the bias circuit is configured to provide a time dependent common-mode voltage to the floating power supply.
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Accused Products
Abstract
In accordance with an embodiment, a circuit for driving a control terminal of a switching transistor includes a driver having an output configured to be coupled to the control terminal of the switching transistor, a first power supply terminal configured to be coupled to a first terminal of a floating power supply, a second power supply terminal configured to be coupled to a second terminal of the floating power supply, and a switching input terminal configured to receive a switching signal. The circuit further includes a bias circuit having an output terminal configured to be coupled to a common-mode control terminal of the floating power supply, wherein the bias circuit is configured to provide a time dependent voltage.
26 Citations
21 Claims
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1. A circuit for driving a control terminal of a switching transistor, the circuit comprising:
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a driver comprising an output configured to be coupled to the control terminal of the switching transistor, a first power supply terminal configured to be coupled to a first terminal of a floating power supply, a second power supply terminal configured to be coupled to a second terminal of the floating power supply, and a switching input terminal configured to receive a switching signal; and a bias circuit having an output terminal configured to be coupled to a common-mode control terminal of the floating power supply, wherein the bias circuit is configured to provide a time dependent common-mode voltage to the floating power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling a switching transistor, the method comprising:
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turning on the switching transistor by driving a control terminal of the switching transistor with a first voltage of a floating power supply; turning off the switching transistor by driving a control terminal of the switching transistor with a second voltage of the floating power supply; and biasing a common-mode control terminal of the floating power supply with a voltage based on a threshold of the switching transistor. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A switching circuit comprising:
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a floating power supply comprising a positive terminal, a negative terminal, and a common-mode terminal; a driver circuit comprising a first power supply terminal coupled to the positive terminal of the floating power supply, a second power supply terminal coupled to the negative terminal of the floating power supply, and an output terminal configured to be coupled to a control terminal of a switching transistor; and a common-mode bias circuit having an output coupled to the common-mode terminal of the floating power supply, wherein the common-mode bias circuit is configured to provide a voltage based on a threshold of the switching transistor at the output of the common-mode bias circuit. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A circuit for driving a control terminal of a switching transistor, the circuit comprising:
- the switching transistor;
a floating power supply;
a driver comprising an output coupled to the control terminal of the switching transistor, a first power supply terminal coupled to a first terminal of the floating power supply, a second power supply terminal coupled to a second terminal of the floating power supply, and a switching input terminal configured to receive a switching signal; and
a bias circuit having an output terminal coupled to a common-mode control terminal of the floating power supply, wherein the bias circuit is configured to provide a time dependent common-mode voltage to the floating power supply.
- the switching transistor;
Specification