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

fYear

2008

fDate

Nov. 30 2008-Dec. 3 2008

Firstpage

1868

Lastpage

1871

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APCCAS.2008.4746408

Filename

4746408