Power isolation during sensitive operations
First Claim
1. A programmable chip package comprising:
- a programmable chip configured to perform a sensitive operation;
a switch configured to selectively couple a main power source to the programmable chip;
an alternate power source; and
a controller configured to;
control the switch to decouple the main power source from the programmable chip during a time interval of the sensitive operation, wherein the programmable chip is configured to draw power from the alternate power source during the time interval; and
control the switch to couple the main power source to the programmable chip after the time interval.
1 Assignment
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Accused Products
Abstract
Power isolation during time intervals of sensitive operations is disclosed. In one embodiment, a programmable chip package includes a programmable chip configured to perform a sensitive operation, and a switch configured to selectively couple a main power source to the programmable chip. The programmable chip package may also include an alternate power source and a controller that is configured to control the switch to decouple the main power source from the programmable chip during a time interval of the sensitive operation, wherein the programmable chip is configured to draw power from the alternate power source during the time interval. The controller is further configured to control the switch to couple the main power source to the programmable chip after the time interval.
27 Citations
28 Claims
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1. A programmable chip package comprising:
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a programmable chip configured to perform a sensitive operation; a switch configured to selectively couple a main power source to the programmable chip; an alternate power source; and a controller configured to; control the switch to decouple the main power source from the programmable chip during a time interval of the sensitive operation, wherein the programmable chip is configured to draw power from the alternate power source during the time interval; and control the switch to couple the main power source to the programmable chip after the time interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electronic circuit comprising:
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at least one switch configured to selectively couple a main power source or an alternate power source to a programmable chip; and a controller communicatively coupled to the at least one switch, wherein the controller is configured to; control the switch to decouple the main power source from the programmable chip during a time interval of a sensitive operation by the programmable chip and to couple the alternate power source to the programmable chip during the time interval; and control the switch to couple the main power source to the programmable chip subsequent to the time interval. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for eliminating a power signature, comprising:
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providing power through a switch from a main power source to a programmable chip configured to perform a sensitive operation; controlling the switch to decouple the main power source from the programmable chip during a time interval of the sensitive operation, wherein the programmable chip is configured to draw power from an alternate power source during the time interval; and controlling the switch to couple the main power source to the programmable chip after the time interval. - View Dependent Claims (26, 27, 28)
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Specification