A high efficiency PWM buck DC/DC converter high-level model and verification

Author

He, Yun ; Zhu, Zhangming ; Yang, Yintang

Author_Institution

Sch. of Microelectron., Xidian Univ., Xian, China

fYear

2008

fDate

20-23 Oct. 2008

Firstpage

2031

Lastpage

2034

Abstract

Based on Simulink tool, the high-level model of 2.0A/375 kHz current controlling PWM buck converter is presented adopting state vector averaging method. The high-level model is verified using Beiling 2Â¿m/20V bipolar process and 30V/5.0A P-ch power MOSFET. The measured results show that the typical conversion efficiency can be over 90%, the maximum ripple value of output voltage is 32.8 mV, the output voltage error can be in the range of Â±3%, the maximum output voltage load regulation is less than 0.3% and the PWM frequency falls to 11.01 kHz during the output circuits being shorted. The current controlling PWM buck DC/DC converter high-level model has been verified by the good performance of the 2.0A/375 kHz buck DC/DC converter.

Keywords

PWM power convertors; circuit CAD; electric current control; load regulation; power MOSFET; switching convertors; PWM power converters; Simulink tool; current 2.0 A; current 5.0 A; current controlling buck DC/DC converter; frequency 375 kHz; high-level model; load regulation; power MOSFET; size 2 mum; state vector averaging method; voltage 20 V; voltage 30 V; voltage 32.8 mV; Control systems; DC-DC power converters; Optimal control; Pulse circuits; Pulse measurements; Pulse width modulation; Pulse width modulation converters; Pulsed power supplies; Switches; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated-Circuit Technology, 2008. ICSICT 2008. 9th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2185-5

Electronic_ISBN

978-1-4244-2186-2

Type

conf

DOI

10.1109/ICSICT.2008.4734965

Filename

4734965