A Novel Quick Response of RBCOT With VIC Ripple for Buck Converter

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 prev...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2013-09, Vol.28 (9), p.4299-4307
Main Authors: Chen, Wen-Wei, Chen, Jiann-Fuh, Liang, Tsorng-Juu, Wei, Lu-Chi, Huang, Jian-Rong, Ting, Wei-Yuan
Format: Article
Language:English
Subjects:
Capacitors
Circuits
Electric power
Electrical equipment
Inductors
Input output
Integrated circuits
Oscillators
Quick response
Resistors
ripple-based constant on-time (RBCOT)
Switching frequency
virtual inductor current (VIC) ripple
Voltage measurement
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Summary: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 V out 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.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2012.2212461