Patent ID: 7944284
Filing Date: 2011-05-17
Classification: H03K

Abstract:
1. A switch system for a virtual power grid, comprising: a first transistor for connecting a power supply to a node of a virtual power grid for an isolated region of circuitry via the first transistor upon a receipt of a first control signal to turn on the first transistor; a second transistor for connecting the power supply to the isolated region of circuitry via the second transistor upon a receipt of a second control signal to turn on the second transistor; and a self-timed enable module for generating and forwarding the second control signal when a voltage level at the node of the virtual power grid which is charged by the power supply via the first transistor reaches a threshold voltage, wherein the self-timed enable module generates the second control signal based on the voltage level at the node of virtual power grid and an inverse of the first control signal, wherein an amount of a first current via the first transistor is less than an amount of a second current via the second transistor, and wherein respective dimensions of the first transistor and the second transistor are configured to prevent each one of the first current and the second current from becoming a rush current.