Title :
Comprehensive power analysis and efficiency optimum design for step-up DC-DC converters
Author :
Liu, Xin ; Lu, Feng ; Qiao, Dong ; Guo, Shuxu ; Chang, Yuchun
Author_Institution :
State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun
fDate :
Nov. 30 2008-Dec. 3 2008
Abstract :
This paper provides designers with a useful efficiency design methodology during DC-DC converters system design. Comprehensive power loss analysis for step-up DC-DC converters is presented and a new calculation method of switching loss is proposed. The efficiencies are directly calculated from converter specifications and device parameters. Based on power loss calculation, we have derived optimum design including rectification mode and switching transistor width. The efficiencies after optimum design have been calculated for pulse width modulation (PWM) and pulse frequency modulation (PFM) control. A step-up converter is designed to verify the calculation method.
Keywords :
DC-DC power convertors; PWM power convertors; comprehensive power analysis; efficiency optimum design; power loss calculation; pulse frequency modulation; pulse width modulation; rectification mode; step-up DC-DC converters; switching transistor width; Capacitors; DC-DC power converters; Design methodology; Inductors; Parasitic capacitance; Pulse width modulation; Space vector pulse width modulation; Switching converters; Switching loss; Voltage;
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
DOI :
10.1109/APCCAS.2008.4746408
