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Using the load current of the CPU to dynamically control the voltage and reduce the power consumption of PC systems

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2 Author(s)
Ying-Wen Bai ; Dept. of Electr. Eng., Fu Jen Catholic Univ., Taipei, Taiwan ; Feng-Hua Chang

In this paper we use the load current of the CPU to decide whether the working state of the PC is considered to be a heavy load or a light load. Based on the voltage limit of each device on the PC motherboard, we use the voltage control as a dynamic voltage scaling (VREF-DVS) regulator to provide different voltages for each device. When the PC has a light load we can decrease the operating voltage of each device to the lowest limit to reduce the power consumption, and with a heavy load we can increase it to the highest limit, to improve the performance.

Published in:

Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International

Date of Conference:

13-16 May 2012