TY - GEN
T1 - Adaptive frequency control technique for enhancing transient performance of DC-DC converters
AU - Huang, Hong Wei
AU - Hsieh, Chun Yu
AU - Chen, Ke Horng
AU - Kuo, Sy Yen
PY - 2007
Y1 - 2007
N2 - An adaptive frequency control (AFC) technique is proposed for minimizing transient dropout voltage and response time of switching DC-DC converters. As we know, nonlinear fast-transient techniques with fixed switching frequency can effectively regulate the unstable output voltage back to steady-state within a short time. However, they suffer from oscillation problem because of large sourcing or sinking recovery current at output of error amplifier by fast transient circuit. Therefore, linear operation provided by AFC technique can dynamically and smoothly adjust the switching frequency, which is proportional to the output voltage variation, to regulate output voltage back to its steady-state value. In other words, AFC technique eliminates system and sub-harmonic oscillation scenarios. Experimental results demonstrate the transient dropout voltage is improved 37.8% when load current changes from 100 mA to 500 mA.
AB - An adaptive frequency control (AFC) technique is proposed for minimizing transient dropout voltage and response time of switching DC-DC converters. As we know, nonlinear fast-transient techniques with fixed switching frequency can effectively regulate the unstable output voltage back to steady-state within a short time. However, they suffer from oscillation problem because of large sourcing or sinking recovery current at output of error amplifier by fast transient circuit. Therefore, linear operation provided by AFC technique can dynamically and smoothly adjust the switching frequency, which is proportional to the output voltage variation, to regulate output voltage back to its steady-state value. In other words, AFC technique eliminates system and sub-harmonic oscillation scenarios. Experimental results demonstrate the transient dropout voltage is improved 37.8% when load current changes from 100 mA to 500 mA.
UR - https://www.scopus.com/pages/publications/38349066328
U2 - 10.1109/ESSCIRC.2007.4430273
DO - 10.1109/ESSCIRC.2007.4430273
M3 - 会议稿件
AN - SCOPUS:38349066328
SN - 1424411254
SN - 9781424411252
T3 - ESSCIRC 2007 - Proceedings of the 33rd European Solid-State Circuits Conference
SP - 174
EP - 177
BT - ESSCIRC 2007 - Proceedings of the 33rd European Solid-State Circuits Conference
T2 - ESSCIRC 2007 - 33rd European Solid-State Circuits Conference
Y2 - 11 September 2007 through 13 September 2007
ER -
