ELECTRIC SYSTEM COMPRISING A LOAD DRIVING APPARATUS BY AUTO-RECOVERY MODE, AND METHOD OF OPERATING THE APPARATUS
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Abstract
A driver for an electric load includes a power device having a control terminal and an output terminal for an output current, and a control module. The control module is configured to drive the power device in an auto-recovery mode by switching between activation and deactivation in the occurrence of an overcurrent condition, wherein the output current reaches a threshold current. The control module is also configured to evaluate a first time interval between a time wherein the overcurrent condition occurs, and a first time, and generate a limit signal when the time interval is equal to a time threshold. The power device is driven in a switching-off condition at least as a function of the limit signal.
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Citations
46 Claims
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1-18. -18. (canceled)
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19. A driving apparatus for an electric load comprising:
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a power device having a control terminal and an output terminal for an output current to be supplied to the electric load; and a control module configured to drive said power device in an auto-recovery mode, by switching between activation and deactivation responsive to an overcurrent condition wherein the output current reaches a current threshold, evaluate a first time interval between a time when the overcurrent condition occurs, and a first time, generate a limit signal when the time interval is equal to a time threshold, and drive said power device to a switching-off condition at least as a function of the limit signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An electronic device comprising:
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a power device configured to generate an output current; and a controller coupled to said power device and configured to drive said power device in an auto-recovery mode, by switching between activation and deactivation based upon an overcurrent condition, evaluate a first time interval between when the overcurrent condition occurs and a first time, generate a limit signal when the time interval is equal to a time threshold, and drive said power device to a switching-off condition based upon the limit signal. - View Dependent Claims (37, 38, 39, 40, 41)
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42. A method for driving an electric load comprising:
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driving a power device coupled to the electric load in an auto-recovery mode, by switching between activation and deactivation based upon an overcurrent condition; evaluating a first time interval between when the overcurrent condition occurs and a first time; generating a limit signal when the time interval is equal to a time threshold; and driving the power device to a switching-off condition based upon the limit signal. - View Dependent Claims (43, 44, 45, 46)
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Specification