TY - GEN
T1 - Loop bandwidth extension technique for PWM voltage mode DC-DC switching converters
AU - Zhan, Chenchang
AU - Ki, Wing Hung
PY - 2009
Y1 - 2009
N2 - A loop bandwidth extension technique for voltage mode pulsewidth modulated DC-DC switching converters operating in continuous conduction mode is proposed. The conventional fixed ramp is replaced by a ramp with a variable slope adjusted by the output voltage through a low power and area-efficient transconductance cell, pushing the complex pole pair of the LC filter to a higher frequency and hence Improves the system loop bandwidth. Theoretical analysis is presented. A prototype buck converter with a maximum load current of 50mA is fabricated using a 0.35/zm CMOS process, occupying an active area of 0.095mm2. Experimental results show that the proposed converter has reduced transient overshoot and undershoot, and settling times are reduced by 50% compared to a conventional voltage mode buck converter. The results match well with the theoretical analysis.
AB - A loop bandwidth extension technique for voltage mode pulsewidth modulated DC-DC switching converters operating in continuous conduction mode is proposed. The conventional fixed ramp is replaced by a ramp with a variable slope adjusted by the output voltage through a low power and area-efficient transconductance cell, pushing the complex pole pair of the LC filter to a higher frequency and hence Improves the system loop bandwidth. Theoretical analysis is presented. A prototype buck converter with a maximum load current of 50mA is fabricated using a 0.35/zm CMOS process, occupying an active area of 0.095mm2. Experimental results show that the proposed converter has reduced transient overshoot and undershoot, and settling times are reduced by 50% compared to a conventional voltage mode buck converter. The results match well with the theoretical analysis.
UR - https://openalex.org/W2151370891
UR - https://www.scopus.com/pages/publications/76249091356
U2 - 10.1109/ASSCC.2009.5357160
DO - 10.1109/ASSCC.2009.5357160
M3 - Conference Paper published in a book
SN - 9781424444342
T3 - Proceedings of Technical Papers - 2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009
SP - 325
EP - 328
BT - Proceedings of Technical Papers - 2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009
T2 - 2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009
Y2 - 16 November 2009 through 18 November 2009
ER -