TY - GEN
T1 - A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control
AU - Lin, Jing Teng
AU - Shiau, Jiunn Hung
AU - Tsai, Chien-Hung
PY - 2014/1/1
Y1 - 2014/1/1
N2 - In this paper, a novel state ACP (adaptive current position) is presented, which allows Buck converter to achieve fast load transient response. The PWM (pulse width modulation) and PFM (pulse frequency modulation) modes increase light-load efficiency and maintain good regulation over a wide load range. When the load rapidly changes from light to heavy, ACP can enhance the transient response, to minimize the settling time and suppresses under/overshoot voltage. Unlike other system, the proposed controller can operate without current-sensor. ACP can force the inductor current to catch up with load current quickly. Switch on high-side power MOS a period of time then change to PWM state. By using the information from pseudo current roof, the exact on-time and off-time at different Vin can be calculated. Also, we can speculate the time to execute ACP without current-sensor. Simulation and experimental results demonstrate the superior dynamic response over that of a conventional digital Buck converter.
AB - In this paper, a novel state ACP (adaptive current position) is presented, which allows Buck converter to achieve fast load transient response. The PWM (pulse width modulation) and PFM (pulse frequency modulation) modes increase light-load efficiency and maintain good regulation over a wide load range. When the load rapidly changes from light to heavy, ACP can enhance the transient response, to minimize the settling time and suppresses under/overshoot voltage. Unlike other system, the proposed controller can operate without current-sensor. ACP can force the inductor current to catch up with load current quickly. Switch on high-side power MOS a period of time then change to PWM state. By using the information from pseudo current roof, the exact on-time and off-time at different Vin can be calculated. Also, we can speculate the time to execute ACP without current-sensor. Simulation and experimental results demonstrate the superior dynamic response over that of a conventional digital Buck converter.
UR - http://www.scopus.com/inward/record.url?scp=84903954528&partnerID=8YFLogxK
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U2 - 10.1109/VLSI-DAT.2014.6834887
DO - 10.1109/VLSI-DAT.2014.6834887
M3 - Conference contribution
AN - SCOPUS:84903954528
SN - 9781479927760
T3 - Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014
BT - Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014
PB - IEEE Computer Society
T2 - 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014
Y2 - 28 April 2014 through 30 April 2014
ER -