Current ripple reduction technique of DC/DC converter

Author

Chang, Ye-Then ; Yeh, Chia-An ; Hamaogi, Masahiro ; Takahashi, Fumikazu ; Lai, Yen-Shin

Author_Institution

Center for Power Electron. Technol., Nat. Taipei Univ. of Technol., Taipei

fYear

2007

Firstpage

1087

Lastpage

1091

Abstract

This paper presents a novel method to reduce the current ripple caused by the variation of inductor for a DC/DC converter. The presented method is to increase the switching frequency to keep constant current ripple when the inductance changes. Therefore, no extra component is required. The problem will be described first and the related method is presented. An experimental DC/DC converter is implemented which is with input voltage of 12 V, output voltage of 1.5 V, output current of 10 A, and switching frequency of 200-250 kHz. Finally, experimental results derived from the designed digital-controlled DC/DC converter are included for confirmation.

Keywords

DC-DC power convertors; power inductors; DC-DC converter; constant current ripple; current 10 A; current ripple reduction technique; digital-controlled converter; frequency 200 kHz to 250 kHz; inductor variation; switching frequency; voltage 1.5 V; voltage 12 V; Buck converters; DC-DC power converters; Digital filters; Inductance; Inductors; Magnetic separation; Power electronics; Saturation magnetization; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, 2007. ICPE '07. 7th Internatonal Conference on

Conference_Location

Daegu

Print_ISBN

978-1-4244-1871-8

Electronic_ISBN

978-1-4244-1872-5

Type

conf

DOI

10.1109/ICPE.2007.4692548

Filename

4692548