TY - GEN
T1 - A fast-transient-response hybrid buck converter with automatic and nearly-seamless loop transition for portable applications
AU - Liu, Yonggen
AU - Zhan, Chenchang
AU - Ki, Wing Hung
PY - 2012
Y1 - 2012
N2 - This paper presents a fast-transient-response hybrid buck converter (HBC) which consists of a voltage mode PWM switching converter with Type III compensation and two auxiliary linear regulators for portable applications. With techniques of hysteretic load transient detection and adaptive duty ratio compensation, the proposed HBC achieves automatic and nearly-seamless loop transition during load transient to achieve small voltage dip and short recovery time. The auxiliary linear regulators can be automatically deactivated in the steady state such that the power efficiency of the switching converter is not compromised. Experimental results of a 0.13-μm CMOS prototype with 10 MHz switching frequency show that, compared with the conventional design, the proposed HBC reduces the voltage dip from 145mV to 55mV and the recovery time from 7.0μs to 1.5μs for a 300mA load current step-up within 20ns.
AB - This paper presents a fast-transient-response hybrid buck converter (HBC) which consists of a voltage mode PWM switching converter with Type III compensation and two auxiliary linear regulators for portable applications. With techniques of hysteretic load transient detection and adaptive duty ratio compensation, the proposed HBC achieves automatic and nearly-seamless loop transition during load transient to achieve small voltage dip and short recovery time. The auxiliary linear regulators can be automatically deactivated in the steady state such that the power efficiency of the switching converter is not compromised. Experimental results of a 0.13-μm CMOS prototype with 10 MHz switching frequency show that, compared with the conventional design, the proposed HBC reduces the voltage dip from 145mV to 55mV and the recovery time from 7.0μs to 1.5μs for a 300mA load current step-up within 20ns.
UR - https://openalex.org/W2041832439
UR - https://www.scopus.com/pages/publications/84870823072
U2 - 10.1109/ESSCIRC.2012.6341274
DO - 10.1109/ESSCIRC.2012.6341274
M3 - Conference Paper published in a book
SN - 9781467322126
T3 - European Solid-State Circuits Conference
SP - 165
EP - 168
BT - 2012 Proceedings of the European Solid State Circuits Conference, ESSCIRC 2012
T2 - 38th European Solid State Circuits Conference, ESSCIRC 2012
Y2 - 17 September 2012 through 21 September 2012
ER -
