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Digital controlled fast average current mode DC-DC converter using VCO and FIR filter

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2 Author(s)
Kurokawa, F. ; Nagasaki Univ., Nagasaki, Japan ; Kajiwara, K.

This paper introduces a digital controlled fast average current mode dc-dc converter using a voltage controlled oscillator (VCO) and a FIR filter. The VCO is used to detect the current in real time. The minimum phase FIR filter is preformed to control the output voltage. The proposed method shows a superior transient response. As a result, the convergence time of output voltage is improved to 97% compared with the conventional digital voltage mode control method. The undershoot of output voltage and the overshoot of reactor current are completely suppressed.

Published in:

Electrical Machines and Systems (ICEMS), 2012 15th International Conference on

Date of Conference:

21-24 Oct. 2012