Title :
Constant input power modulation technique for high efficiency boost converter optimized for lithium-ion battery applications
Author :
McClure, Mickey ; Elder, J. Scott
Author_Institution :
Unitrode Corp., Merrimack, NH, USA
Abstract :
A hysteretic synchronous boost power converter which employs a highly efficient constant input power modulation scheme is presented. This scheme varies the charge time of the boost inductor as a function of the inverse of the square of the input voltage. An analysis of the algorithm is presented, as well as a design procedure for a boost power converter optimized for the wide voltage range of lithium-ion batteries. Data is included describing the efficiency of the power converter compared to peak current type hysteretic converters, as well as plots depicting actual power converter run times while operating from a lithium-ion battery. Finally, a new integrated circuit which employs the constant input power modulation technique is introduced
Keywords :
DC-DC power convertors; circuit optimisation; lithium; power integrated circuits; power supplies to apparatus; secondary cells; Li; Li-ion battery; algorithm; applications; charge time; constant input power modulation technique; design procedure; efficiency; hysteretic synchronous boost power converter; input voltage; integrated circuit; run times; Algorithm design and analysis; Batteries; Costs; Design optimization; Electronics industry; Hysteresis; Inductors; Power conversion; Power generation; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1996. APEC '96. Conference Proceedings 1996., Eleventh Annual
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-3044-7
DOI :
10.1109/APEC.1996.500538
