Title :
Estimation of microprocessor instantaneous load current for voltage regulator optimization
Author :
Lambert, W.J. ; Ayyanar, R.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ
Abstract :
A concise method for estimating the instantaneous current drawn by a microprocessor as a function of time is presented. The approach uses the measured output impedance to create an extrapolated, band-limited inverse filter which estimates the instantaneous load current from a highly averaged measurement of the output voltage. The algorithm is verified in simulation and measured results are presented.
Keywords :
extrapolation; filters; microcomputers; voltage measurement; voltage regulators; extrapolated band-limited inverse filter; microprocessor instantaneous load current estimation; voltage measurement; voltage regulator optimization; Current measurement; Deconvolution; Impedance measurement; Microprocessors; Pins; Power measurement; Regulators; Semiconductor device measurement; State estimation; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4244-1873-2
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2008.4522915
