Title :
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
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;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18235
