The optimized switching of current mode PWM buck converter with high efficiency and high frequency

Author

Jia-Chuan Lin ; Meng-Hsueh Wu ; Po-Chia Huang ; Yu-Chi Tsui

Author_Institution

Dept. of Electr. Eng., Nat. Taipei Univ., Taipei, Taiwan

fYear

2014

fDate

7-10 May 2014

Firstpage

1

Lastpage

2

Abstract

As a new type buck converter, it contain high efficiency and high stability, we used Multi-stage switch to improve efficiency. This circuit can adjusted based on the load amount to determine the number of power MOSFET pulse on. So this design have good efficiency, under any load conditions. This circuit is working on 20M Hz, and this type of frequency can make inductor very small to reduce chip´s size. Efficiency is 81% in light load; is 86% in heavy load. This was designed and simulated using 0.35 micron TSMC 2P4M 5V technology, with a chip area 6.83mm2.

Keywords

PWM power convertors; current-mode circuits; power MOSFET; switching convertors; TSMC 2P4M 5V technology; current mode PWM buck converter; multistage switch; optimized switching; power MOSFET pulse; size 0.35 mum; Batteries; Circuit stability; MOSFET; Pulse width modulation; Stability analysis; Switches; Voltage control; Multi-stage switch; buck converter; efficiency; high frequency; high stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Next-Generation Electronics (ISNE), 2014 International Symposium on

Conference_Location

Kwei-Shan

Type

conf

DOI

10.1109/ISNE.2014.6839337

Filename

6839337