Control circuit for a depletion mode switch and method of operating the same
First Claim
1. A control circuit for a power converter employing a switch enabled to conduct when substantially zero volts is applied to a control terminal thereof, comprising:
- a controller configured to control said switch by providing a drive signal to said control terminal thereof as a function of a characteristic of said power converter; and
a protection circuit configured to induce an application of a drive signal having a negative value derived from a bias voltage to said control terminal to substantially disable said switch when an input voltage is applied to said power converter.
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Accused Products
Abstract
A control circuit for a power converter employing a depletion mode switch and a method of operating the same. In one embodiment, the control circuit includes a controller configured to control the depletion mode switch by providing a drive signal to a control terminal thereof as a function of a characteristic of the power converter. The control circuit also includes a protection circuit configured to induce an application of a drive signal having a non-zero value to the control terminal to substantially disable the depletion mode switch in response to a transient condition of the power converter.
221 Citations
20 Claims
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1. A control circuit for a power converter employing a switch enabled to conduct when substantially zero volts is applied to a control terminal thereof, comprising:
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a controller configured to control said switch by providing a drive signal to said control terminal thereof as a function of a characteristic of said power converter; and a protection circuit configured to induce an application of a drive signal having a negative value derived from a bias voltage to said control terminal to substantially disable said switch when an input voltage is applied to said power converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating a power converter employing a switch enabled to conduct when substantially zero volts is applied to a control terminal thereof, comprising:
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controlling said switch by providing a drive signal to said control terminal thereof as a function of a characteristic of said power converter; and inducing an application of a drive signal having a negative value derived from a bias voltage to said control terminal to substantially disable said switch when an input voltage is applied to said power converter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification