Power-up circuit for field programmable gate arrays
First Claim
1. A protection circuit to prevent a current spike in a logic module having an internal disable input during power up of a field programmable gate array, wherein the protection circuit comprises means for providing a voltage input to the internal disable input to disable the logic module until a voltage output by a charge pump of the field programmable gate array reaches a predetermined voltage.
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Accused Products
Abstract
A protection circuit prevents a current spike in a logic module in a field programmable gate array during power up of the gate array. The protection circuit supplies a voltage onto an internal disable input of the logic module during power up until a voltage output by a charge pump reaches a predetermined voltage. The voltage on the internal disable input turns off transistor(s) in the logic module and prevents the current spike. When the voltage output by the charge pump reaches the predetermined voltage, the protection circuit no longer supplies the voltage to the logic module'"'"'s internal disable input.
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Citations
8 Claims
- 1. A protection circuit to prevent a current spike in a logic module having an internal disable input during power up of a field programmable gate array, wherein the protection circuit comprises means for providing a voltage input to the internal disable input to disable the logic module until a voltage output by a charge pump of the field programmable gate array reaches a predetermined voltage.
- 5. A method of preventing a current spike in a logic module having an internal disable input during power up of a field programmable gate array, wherein the method comprises inputting a voltage to the internal disable input to disable the logic module until a voltage output by a charge pump of the field programmable gate array reaches a predetermined voltage.
Specification