Title :
A Novel Quick Response of RBCOT With VIC Ripple for Buck Converter
Author :
Wen-Wei Chen ; Jiann-Fuh Chen ; Tsorng-Juu Liang ; Lu-Chi Wei ; Jian-Rong Huang ; Wei-Yuan Ting
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
A novel quick response of ripple-based constant on-time with virtual inductor current ripple for Buck converter is proposed in this paper. The concept uses the capacitor and the resistor in a series to filter out the output voltage at load transient to dynamically change the width of on-time to prevent the Vout from dropping markedly. Finally, 12-V input voltage, 3.3-V output voltage, and 60-W output power with the novel quick response circuit for the IC of the proposed Buck converter are implemented to verify its viability and superiority.
Keywords :
capacitors; power convertors; resistors; RBCOT; VIC ripple; buck converter; capacitor; load transient; output voltage; power 60 W; quick response circuit; resistor; ripple based constant on-time; virtual inductor current ripple; voltage 12 V; voltage 3.3 V; Capacitors; Inductors; Integrated circuits; Oscillators; Resistors; Switching frequency; Voltage measurement; Quick response; ripple-based constant on-time (RBCOT); virtual inductor current (VIC) ripple;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2012.2212461
