Dynamics and control of DC-to-DC converters driving other converters downstream

Author

Choi, Byungcho ; Cho, Bo H. ; Hong, Sung-Soo

Author_Institution

Dept. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu, South Korea

Volume

46

Issue

10

fYear

1999

fDate

10/1/1999 12:00:00 AM

Firstpage

1240

Lastpage

1248

Abstract

This paper reveals that the dynamics of a converter loaded with other converters downstream are markedly different from those of a standalone converter and conventional design techniques developed for converters with a resistive load could destabilize the control loop of converters combined with other converters. Based on comprehensive small-signal analyses, this paper presents the proper way of designing the control loop of converters driving other converters downstream. The analysis and design results are verified by both time- and frequency-domain simulations

Keywords

Bode diagrams; DC-DC power convertors; PWM power convertors; compensation; power supply quality; power system dynamic stability; step response; transfer functions; Bode diagram; DC-DC converters; PWM converters; boost-derived; buck-derived; cascaded stages; control loop design; current-loop closed power stage; distributed power systems; driving other converters downstream; dynamics analysis; frequency-domain simulation; line conditioner; open-loop power stage; small-signal analyses; stability; step response; time-domain simulation; transfer function; voltage feedback compensation; Analytical models; Control design; DC-DC power converters; Frequency; Impedance; Power system dynamics; Power system simulation; Power system stability; Pulse width modulation converters; Voltage;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.795837

Filename

795837