Switch driver
First Claim
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1. A method of driving a switch comprising a drive terminal and a parasitic capacitor associated with a parasitic current, the method comprising the steps of:
- applying a drive signal having a drive value to the drive terminal;
sensing a drive voltage of the drive terminal; and
adjusting the drive value based on the drive voltage to limit a switch-current flowing through the switch,the method further comprising setting the drive value to a first level; and
adjusting the drive value to another level upon identifying that the drive voltage has reached a target value to adjust the parasitic current.
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Abstract
The present disclosure relates to an apparatus and method for driving a switch, such as a power switch. A driver comprises a voltage sensor to sense a drive voltage, and an electrical source to provide a drive signal having a drive value. The driver is adapted to adjust the drive value based on the drive voltage to limit a switch-current flowing through the switch.
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Citations
19 Claims
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1. A method of driving a switch comprising a drive terminal and a parasitic capacitor associated with a parasitic current, the method comprising the steps of:
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applying a drive signal having a drive value to the drive terminal; sensing a drive voltage of the drive terminal; and adjusting the drive value based on the drive voltage to limit a switch-current flowing through the switch, the method further comprising setting the drive value to a first level; and
adjusting the drive value to another level upon identifying that the drive voltage has reached a target value to adjust the parasitic current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A driver for driving a switch comprising a parasitic capacitor associated with a parasitic current, the driver comprising
a voltage sensor to sense a drive voltage; -
an electrical source to provide a drive signal having a drive value; the driver being adapted to adjust the drive value based on the drive voltage to limit a switch-current flowing through the switch; wherein the driver is adapted to set the drive value to a first level; and
to adjust the drive value to another level upon identifying that the drive voltage has reached a target value to adjust the parasitic current. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification