Patent ID: 6052790
Filing Date: 2000-04-18
Classification: G06F,H02M

Abstract:
A computer system comprising:a processor;a system memory coupled to the processor;a bus coupled to the processor;an I/O device coupled to the bus;a power plane for supplying power to a portion of the computer system;a switching buck converter including a voltage input and a voltage output, the voltage output being coupled to the power plane for providing a regulated voltage thereto, the switching buck converter further including:a switching transistor coupled to the voltage input and the voltage output;a capacitive energy storage device coupled to the voltage output; anda pulse width modulated control loop coupled from the voltage output to the switching transistor to switch the switching transistor of the converter at a sufficiently high switching frequency that the capacitive energy storage device provides both transition control and bulk functions when the converter experiences a current load fluctuation at the voltage output.