Patent ID: 6201374
Filing Date: 2001-03-13
Classification: G05F

Abstract:
A voltage regulation system for providing a regulated output voltage, said system comprising:a voltage regulator coupled to a source of electrical power, said voltage regulator for generating an intermediate supply voltage;a reference voltage source;a variable impedance having an impedance input, an impedance output, and an impedance control input, said impedance input electrically connected to said intermediate supply voltage, said variable impedance adapted to exert a series impedance so as to drop said intermediate supply voltage to a desired output voltage, said variable impedance adapted to provide at said impedance output the regulated output voltage, wherein the value of the impedance exerted is determined in accordance with an impedance control signal applied to said impedance control input;an impedance control adapted to sense the difference between said output voltage and said reference voltage and to generate said impedance control signal in response thereto; andwherein the voltage level of said intermediate supply voltage is adapted to exceed said desired output voltage so as to compensate for a maximum expected voltage drop across said variable impedance.