Title :
Modeling and control of multi-modes charge pump with improved efficiency over wide input and load range
Author :
Guo, Rong ; Yang, Liyu ; Liang, Zhigang ; Huang, Alex ; Endredy, John
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
Abstract :
A hybrid control scheme of a regulated multi-modes charge pump and its modeling are proposed in this paper. It can achieve very high efficiency over wide input and load range. It is controlled to adaptively change the conversion mode at different input voltage. It also combines device segmentation and pulse skipping modulation to improve the efficiency over a wide load range. Due to the complexity of its hybrid control scheme, the modeling of multi-modes charge pump is analyzed in order to provide a guide for the compensator design and ensure the stability of system over wide input and load range. Both of the simulation and test results are provided to verify proposed control scheme.
Keywords :
adaptive control; charge pump circuits; compensation; continuous systems; discrete systems; power conversion; power supplies to apparatus; power system stability; adaptive control; compensator design; conversion mode; device segmentation; hybrid control; input voltage; multimode charge pump control; multimode charge pump modeling; pulse skipping modulation; system stability; Capacitors; Charge pumps; Integrated circuit modeling; Load modeling; Switches; Transfer functions; Voltage control; Charge pump; Hybrid control; Modeling; Stability;
Conference_Titel :
Control and Modeling for Power Electronics (COMPEL), 2010 IEEE 12th Workshop on
Conference_Location :
Boulder, CO
Print_ISBN :
978-1-4244-7462-2
Electronic_ISBN :
978-1-4244-7461-5
DOI :
10.1109/COMPEL.2010.5562378
