Digital compensation of a high-frequency voltage - mode DC-DC converter

Author

Hsia, Tsun-Hsiao ; Tsai, Hsien-Yi ; Lin, Yu-Zheng ; Chen, Dan ; Chang, Wei-Hsu

Author_Institution

Nat. Taiwan Univ., Taipei

fYear

2007

fDate

2-5 Sept. 2007

Firstpage

1

Lastpage

8

Abstract

This paper explores the potential and the pitfall of digital compensation in a voltage-mode DC-DC converter. A FPGA-based synchronous DC-DC buck converter was used to implement the proposed two digital compensating schemes. One was to use a pair of complex compensating zeros and the other was to use a positive pole. Small-signal models of converters with digital control will be used to illustrate some basic concepts. Complex-zero compensation may improve the control loop gain characteristics but positive-pole compensation is infeasible.

Keywords

DC-DC power convertors; complex-zero compensation; control loop gain characteristics; digital compensation; digital control; high frequency power converter; high-frequency voltage-mode DC-DC converter; pulse width modulation; voltage regulator modules; Buck converters; Circuits; DC-DC power converters; Digital control; Digital modulation; Field programmable gate arrays; Open loop systems; Poles and zeros; Pulse width modulation converters; Voltage; Control methods for electrical systems; High frequency power converter; Pulse Width Modulation (PWM); Regulation; Voltage Regulator Modules;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2007 European Conference on

Conference_Location

Aalborg

Print_ISBN

978-92-75815-10-8

Electronic_ISBN

978-92-75815-10-8

Type

conf

DOI

10.1109/EPE.2007.4417426

Filename

4417426