Patent ID: 8984314
Filing Date: 2015-03-17
Classification: G06F,Y02D

Abstract:
1. A method in a data processing system, for efficiently recycling a charge from a power domain that is discharging, the method: identifying the power domain that is discharging, thereby forming a discharging power domain, and a power domain that needs to be precharged, thereby forming a precharging power domain; disconnecting a side of the discharging power domain normally coupled to a voltage supply from the voltage supply; connecting the side of the discharging power domain normally coupled to the voltage supply to a side of the precharging power domain normally coupled to the voltage supply, wherein the side of the precharging power domain normally coupled to the voltage supply is currently disconnected from the voltage supply; disconnecting a side of the discharging power domain normally coupled to the ground from ground; and connecting the side of the discharging power domain normally coupled to ground to the voltage supply, thereby precharging the precharging power domain with the charge from the discharging power domain that would normally be lost due to leakage by shifting a potential of a capacitive load in the discharging power domain thereby forcing the charge on the side of the discharging power domain normally coupled to the voltage supply to transfer to the side of the precharging power domain normally coupled to the voltage supply.