Optimizing the design of switch-mode power supplies with battery back-up and power factor correction

Author

Lee, Y.S. ; Siu, K.W. ; Liu, Xuan-Zhong

Author_Institution

Dept. of Electron. Eng., Hong Kong Polytech. Univ., Hong Kong

Volume

3

fYear

1995

fDate

30 Apr-3 May 1995

Firstpage

2051

Abstract

Regulatory standards such as IEC555-2 require switch-mode power supplies (SMPS) to have a high power factor. The addition of a power-factor-correction (PFC) pre-regulator to an SMPS may enable it to meet the regulatory requirement. But this is, in most cases, not an optimum design. Based on the example of a power supply system for telecommunication applications, a method to optimize the overall design is presented in this paper. In the new design the need for a separate SMPS (in addition to the PFC pre-regulator) is eliminated. Computer simulations are presented to show that the new design approach is possible and practical

Keywords

feedforward; power factor correction; switched mode power supplies; telecommunication power supplies; voltage regulators; IEC555-2; SMPS; battery back-up; power factor correction; pre-regulator; switch-mode power supplies; telecommunication applications; Batteries; Circuits; Design optimization; Emergency power supplies; Filtering; Power factor correction; Reactive power; Regulators; Switched-mode power supply; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2570-2

Type

conf

DOI

10.1109/ISCAS.1995.523827

Filename

523827