Patent ID: 7250812
Filing Date: 2007-07-31
Classification: G06F

Abstract:
1. An integrated circuit current regulator capable of varying a first current in accordance with a switching activity of the integrated circuit, comprising: a compensation circuit comprising a bypass circuit and a comparator coupled to the bypass circuit, the compensation circuit regulates the first current; the comparator providing a control signal corresponding to the switching activity; and a scaling unit coupled to the comparator and capable of dividing a first voltage into a plurality of n fractional voltages of the first voltage; wherein the compensation circuit further comprises: the comparator coupled to a tap point of the scaling unit corresponding to one of the plurality of n fractional voltages, the comparator capable of determining whether the one of the n fractional voltages is greater than or less than a reference voltage and generating a compare output signal; a switch device driven by the compare output signal; a bypass resistor coupled to the switch device and to a power supply voltage, the bypass resistor capable of regulating fluctuations in the power supply voltage; and the current regulator further comprising a plurality of comparators, each coupled to a corresponding tap point of the scaling unit and capable of determining whether one of the n fractional voltages is greater than or less than the reference voltage.