TY - GEN
T1 - A high effieciency DC/DC boost regulator with adaptive off/on-time control
AU - Wang, Chen Yu
AU - Guo, Jhih Sian
AU - Huang, Chi Yuan
AU - Tsai, Chien-Hung
PY - 2013/8/15
Y1 - 2013/8/15
N2 - An inductor switching DC/DC boost regulator with adaptive off/on time (AOOT) control is proposed in this paper. This system works with adaptive-off-time control in CCM while adaptive-on-time control in DCM. The burden caused by the switching frequency variation is reduced due to the quasi-fixed frequency switching by adaptive-off-time modulation under heavy-load condition. In DCM, adaptive-on-time takes over the operation and improves the power efficiency under light-load condition. In another way, an on-chip sense-FET current sensor is used to decrease the conduction loss caused by the conventional sensing resistor on power stage. The AOOT control boost regulator was implemented with a 0.25 μm high voltage (HV) CMOS process. For conversion specification of 5 V to 12V with a 0∼300mA load range, peak efficiency of 92.5% is achieved. Measurement results show that the switching frequency keeps constant at 950 kHz in CCM.
AB - An inductor switching DC/DC boost regulator with adaptive off/on time (AOOT) control is proposed in this paper. This system works with adaptive-off-time control in CCM while adaptive-on-time control in DCM. The burden caused by the switching frequency variation is reduced due to the quasi-fixed frequency switching by adaptive-off-time modulation under heavy-load condition. In DCM, adaptive-on-time takes over the operation and improves the power efficiency under light-load condition. In another way, an on-chip sense-FET current sensor is used to decrease the conduction loss caused by the conventional sensing resistor on power stage. The AOOT control boost regulator was implemented with a 0.25 μm high voltage (HV) CMOS process. For conversion specification of 5 V to 12V with a 0∼300mA load range, peak efficiency of 92.5% is achieved. Measurement results show that the switching frequency keeps constant at 950 kHz in CCM.
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U2 - 10.1109/VLDI-DAT.2013.6533804
DO - 10.1109/VLDI-DAT.2013.6533804
M3 - Conference contribution
AN - SCOPUS:84881329371
SN - 9781467344357
T3 - 2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013
BT - 2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013
T2 - 2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013
Y2 - 22 April 2013 through 24 April 2013
ER -