Title :
Quadratic differential and integration technique in V2 control buck converter with small ESR capacitor
Author :
Wang, Shih-Jung ; Lee, Yu-Huei ; Lai, Yung-Chih ; Chen, Ke-Horng
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
This paper proposes a quadratic differential and integration (QDI) technique for the design of buck converters with small equivalent series resistance (ESR) of the output capacitor. The QDI circuit not only further removes the dependence of ESR in the V2 control but also achieves a fast transient response with small load transient voltage variation. The experimental results show the output voltage can have voltage ripple about 30 mV and recovery time of 20 mus in case of 300 mA load current variation.
Keywords :
capacitors; equivalent circuits; power convertors; quadratic programming; transient response; ESR capacitor; QDI circuit; V2 control buck converter; current 300 mA; equivalent series resistance; fast transient response; integration technique; load current variation; load transient voltage variation; quadratic differential technique; time 20 mus; voltage 30 mV; Buck converters; Capacitors; Circuits; Paramagnetic resonance; Transient response; Voltage control;
Conference_Titel :
Custom Integrated Circuits Conference, 2009. CICC '09. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-4071-9
Electronic_ISBN :
978-1-4244-4073-3
DOI :
10.1109/CICC.2009.5280881
