SYSTEM AND METHOD FOR DESATURATION DETECTION
First Claim
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1. A method of operating a control circuit, the method comprising:
- generating a threshold value based on a drive signal of an external power transistor; and
determining an overpower state of the external power transistor based on a voltage at a drain or a collector of the external power transistor and the threshold value.
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Abstract
In accordance with an embodiment, a method of operating a control circuit includes generating a threshold value based on a drive signal of an external power transistor, and determining an overpower state of the external power transistor based on a voltage at a drain or a collector of the external power transistor and the threshold value.
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Citations
27 Claims
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1. A method of operating a control circuit, the method comprising:
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generating a threshold value based on a drive signal of an external power transistor; and determining an overpower state of the external power transistor based on a voltage at a drain or a collector of the external power transistor and the threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A circuit comprising:
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a threshold generation circuit configured to generate a threshold value based on a drive signal of an external power transistor; and an overpower determination circuit configured to determine an overpower state of the external power transistor based on a voltage at a drain or a collector of the external power transistor and the threshold value. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An electronic circuit comprising:
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a measurement circuit comprising a first input configured to be coupled to an external power transistor and a measurement output; a threshold circuit comprising a second input configured to receive an indication of a gate drive voltage of the external power transistor, and a threshold output, the threshold output being set based on the indication of the gate drive voltage received at the second input; a comparator comprising a third input coupled to the measurement output, a fourth input coupled to the threshold output, and a comparison output; and a drive circuit configured to be coupled to the external power transistor and coupled to the comparison output, the drive circuit configured to disable the external power transistor based on signals at the comparison output. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification