DC analysis and design of a PWM buck converter operated as a dynamic power supply

Autor: Thomas Salvatierra, Marian K. Kazimierczuk
Rok vydání: 2016
Předmět:
Zdroj: International Journal of Circuit Theory and Applications. 45:681-706
ISSN: 0098-9886
Popis: Summary Modern energy transmission and signal reproduction techniques rely upon power amplifiers that must operate with high efficiency. An increasingly popular technique for addressing this problem involves replacing the fixed power amplifier supply voltage VDD with a controlled, variable voltage provided by a dynamic power supply. Although pulse-width modulated dc-dc buck converters typically function as fixed-output supplies, this paper provides new theoretical dc analysis for operation wherein the output voltage is controlled and continuously variable over a wide range. A design procedure for the variable-output buck converter is derived. Key device parameters affecting converter speed and efficiency are identified. The dc analysis and design procedure are verified experimentally, with calculated and measured parameters shown to be in good agreement. Copyright © 2016 John Wiley & Sons, Ltd.
Databáze: OpenAIRE