Title :
Improvement of Dynamic Characteristics of Digitally Controlled Switching Power Converter
Author :
Kurokawa, Fujio ; Okamoto, Wataru
Author_Institution :
Nagasaki Univ., Nagasaki
Abstract :
This paper presents the dynamic characteristics of the switching dc-dc power converter using the digital PID control method, FIR filter method and IIR filter method, and then the design criterion to improve the dynamic characteristics is discussed. As a result, it is seen in the simulation and experimental results that 11 R filter method has superior transient response and suppressed oscillation deriving from limit cycle. The undershoot is less than 200 mV and the transient time is less than 0.4 ms. This result suggests the design criterion of digitally controlled switching dc-dc power converter.
Keywords :
DC-DC power convertors; FIR filters; IIR filters; digital control; switching convertors; three-term control; FIR filter method; IIR filter method; digital PID control method; digitally controlled switching converter; dynamic characteristics; superior transient response; suppressed oscillation; switching dc-dc power converter; Circuits; DC-DC power converters; Digital control; Digital signal processing; Finite impulse response filter; IIR filters; Switches; Switching converters; Three-term control; Voltage; Digital Control; FIR Filter; IIR Filter; PID control;
Conference_Titel :
Power Conversion Conference - Nagoya, 2007. PCC '07
Conference_Location :
Nagoya
Print_ISBN :
1-4244-0844-X
Electronic_ISBN :
1-4244-0844-X
DOI :
10.1109/PCCON.2007.373110
