Title :
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
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;
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
DOI :
10.1109/EPE.2007.4417426
