TY - GEN
T1 - A fast-transient quasi-V 2 switching buck regulator using AOT control
AU - Huang, Chun Sheng
AU - Wang, Chen Yu
AU - Wang, Jia Hui
AU - Tsai, Chien Hung
PY - 2011/12/1
Y1 - 2011/12/1
N2 - A switching regulator with quasi-V 2 adaptive on-time (AOT) control, that provides a fast load transient response is proposed. A feed-forward path network allows the proposed switching regulator to achieve a fast transient response and stable operation without requiring an output capacitor with a large equivalent series resistance. The proposed AOT controller makes the switching frequency pseudo fixed in continuous conduction mode and works in pulse-frequency modulation mode under ultra-light load conditions. The AOT controller adjusts the on-time according to the supply voltage load current conditions. The measurement results verify that the switching regulator can operate under load currents of 5-800 mA for supply voltages of 3.3-4.2 V and an output voltage of 1.2 V. The recovery time is 3.6μs and the voltage drop is 55 mV when the load current is increased from 5 to 750 mA.
AB - A switching regulator with quasi-V 2 adaptive on-time (AOT) control, that provides a fast load transient response is proposed. A feed-forward path network allows the proposed switching regulator to achieve a fast transient response and stable operation without requiring an output capacitor with a large equivalent series resistance. The proposed AOT controller makes the switching frequency pseudo fixed in continuous conduction mode and works in pulse-frequency modulation mode under ultra-light load conditions. The AOT controller adjusts the on-time according to the supply voltage load current conditions. The measurement results verify that the switching regulator can operate under load currents of 5-800 mA for supply voltages of 3.3-4.2 V and an output voltage of 1.2 V. The recovery time is 3.6μs and the voltage drop is 55 mV when the load current is increased from 5 to 750 mA.
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U2 - 10.1109/ASSCC.2011.6123597
DO - 10.1109/ASSCC.2011.6123597
M3 - Conference contribution
AN - SCOPUS:84863064440
SN - 9781467303989
T3 - 2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011
SP - 53
EP - 56
BT - 2011 Proceedings of Technical Papers
T2 - 7th IEEE Asian Solid-State Circuits Conference, A-SSCC 2011
Y2 - 14 November 2011 through 16 November 2011
ER -