Dynamic characteristics of the digitally controlled DC-DC converter

Author

Matsuo, Hirofumi ; Kurokawa, Fujio ; Tauchi, Takaaki ; Sako, Hideo

Author_Institution

Dept. of Electron., Nagasaki Univ., Japan

fYear

1988

fDate

11-14 April 1988

Firstpage

997

Abstract

The dynamic characteristics of the digitally controlled DC-DC converter is analyzed theoretically an experimentally. The stability condition and the indicial response for the changes of the input voltage and the load are defined as a function of the circuit parameters and variables of the digital control circuit and the power stage. By taking account of the overshoot or undershoot of the output voltage with the step changes of the input voltage and the load and of the ripple instability, the optimum PID (proportional-integral-derivative) coefficients of the digital control circuit are examined.<>

Keywords

digital control; power convertors; stability; three-term control; DC-DC converter; circuit parameters; digital control circuit; dynamic characteristics; indicial response; optimum PID coefficients; output voltage overshoot; output voltage undershoot; power convertor; proportional-integral-derivative; ripple instability; stability condition; Analog-digital conversion; Circuit stability; DC-DC power converters; Digital control; Electric variables control; Frequency; Switches; Transfer functions; Voltage control; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE

Conference_Location

Kyoto, Japan

Type

conf

DOI

10.1109/PESC.1988.18235

Filename

18235