Method for driving a transistor device with non-isolated gate, drive circuit and electronic circuit
First Claim
1. A method comprising:
- driving a transistor device based on a drive signal such that the transistor device is driven in an on-state when the drive signal has an on-level and an off-state when the drive signal has an off-level,wherein driving the transistor device in the off-state comprises;
operating the transistor device in a first off-state after the drive signal changes from the on-level to the off-level, wherein operating the transistor device in the first off-state comprises driving the transistor device with a first drive voltage,after the first off-state, operating the transistor device in a second off-state different from the first off-state, wherein operating the transistor device in the second off-state comprises driving the transistor device with a second drive voltage, the second drive voltage being different than the first drive voltage, andafter the second off-state, operating the transistor device in a third off-state different from the second off-state in response to the off-level of the drive signal prevailing longer than a predefined maximum time period, wherein operating the transistor device in the third off-state comprises driving the transistor device with a third drive voltage, the third drive voltage being different than the second drive voltage,wherein a difference between a threshold voltage of the transistor device and the first drive voltage is greater than a difference between the threshold voltage and the second drive voltage, andwherein a difference between a threshold voltage of the transistor device and the third drive voltage is greater than the difference between the threshold voltage and the second drive voltage.
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Abstract
Disclosed is a method for driving a transistor device and an electronic circuit that includes a transistor device. The method includes driving the transistor device based on a drive signal such that the transistor device is driven in an on-state when the drive signal has an on-level and an off-state when the drive signal has an off-level. Driving the transistor device in the off-state includes: operating the transistor device in a first off-state after the drive signal changes from the on-level to the off-level; after the first off-state, operating the transistor device in a second off-state different from the first off-state; and after the second off-state, operating the transistor device in a third off-state different from the second off-state if the off-level of the drive signal prevails longer than a predefined maximum time period.
2 Citations
18 Claims
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1. A method comprising:
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driving a transistor device based on a drive signal such that the transistor device is driven in an on-state when the drive signal has an on-level and an off-state when the drive signal has an off-level, wherein driving the transistor device in the off-state comprises; operating the transistor device in a first off-state after the drive signal changes from the on-level to the off-level, wherein operating the transistor device in the first off-state comprises driving the transistor device with a first drive voltage, after the first off-state, operating the transistor device in a second off-state different from the first off-state, wherein operating the transistor device in the second off-state comprises driving the transistor device with a second drive voltage, the second drive voltage being different than the first drive voltage, and after the second off-state, operating the transistor device in a third off-state different from the second off-state in response to the off-level of the drive signal prevailing longer than a predefined maximum time period, wherein operating the transistor device in the third off-state comprises driving the transistor device with a third drive voltage, the third drive voltage being different than the second drive voltage, wherein a difference between a threshold voltage of the transistor device and the first drive voltage is greater than a difference between the threshold voltage and the second drive voltage, and wherein a difference between a threshold voltage of the transistor device and the third drive voltage is greater than the difference between the threshold voltage and the second drive voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A drive circuit configured to drive a transistor device based on a drive signal such that the transistor device is driven in an on-state when the drive signal has an on-level and an off-state when the drive signal has an off-level, wherein in the off-state the drive circuit is configured to drive the transistor device
in a first off-state with a first drive voltage after the drive signal changes from the on-level to the off-level, after the first off-state, in a second off-state with a second drive voltage, wherein the second off-state is different from the first off-state and wherein the second drive voltage is different than the first drive voltage, and after the second off-state, in a third off-state with a second drive voltage, wherein the third off-state is different from the second off-state and the third drive voltage is different than the second drive voltage, wherein the transistor device is driven in the third off state in response to the off-level of the drive signal prevailing longer than a predefined maximum time period, wherein a difference between a threshold voltage of the transistor device and the first drive voltage is greater than a difference between the threshold voltage and the second drive voltage, and wherein a difference between a threshold voltage of the transistor device and the third drive voltage is greater than the difference between the threshold voltage and the second drive voltage.
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18. An electronic circuit, comprising:
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a transistor device, wherein the transistor device is a high electron mobility transistor (HEMT); and a drive circuit configured to drive the transistor device based on a drive signal such that the transistor device is driven in an on-state when the drive signal has an on-level and an off-state when the drive signal has an off-level, wherein in the off-state the drive circuit is configured to drive the transistor device in a first off-state after the drive signal changes from the on-level to the off-level, after the first off-state, in a second off-state different from the first off-state, and after the second off-state, in a third off-state different from the second off-state if the off-level of the drive signal prevails longer than a predefined maximum time period.
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Specification