Title :
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
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 2¿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 ±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;
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
DOI :
10.1109/ICSICT.2008.4734965
