Open-loop peak voltage feedforward control of PWM buck converter

Author

Kazimierczuk, Marian K. ; Edström, Anders J.

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA

Volume

47

Issue

5

fYear

2000

fDate

5/1/2000 12:00:00 AM

Firstpage

740

Lastpage

746

Abstract

DC and small-signal analyses are given for an open-loop buck pulse-width modulated (PWM) DC-DC converter with peak-voltage-modulation (PVM) feedforward control. A DC model is used to derive the DC input-to-output voltage transfer function taking into account parasitic components, such as the MOSFET on-resistance, diode forward resistance, and diode offset voltage. A small-signal model is used to derive the audio susceptibility and the input impedance. It is shown that ideally the audio susceptibility is zero and the input impedance is frequency independent and negative for the buck converter with PVM feedforward control

Keywords

DC-DC power convertors; PWM power convertors; electric impedance; equivalent circuits; feedforward; network analysis; transfer functions; DC analysis; DC input-to-output voltage transfer function; DC model; MOSFET on-resistance; PWM buck converter; audio susceptibility; diode forward resistance; diode offset voltage; input impedance; open-loop peak voltage feedforward control; parasitic components; peak-voltage-modulation; pulse-width modulated DC-DC converter; small-signal analysis; Buck converters; DC-DC power converters; Diodes; Impedance; MOSFET circuits; Open loop systems; Pulse width modulation; Pulse width modulation converters; Transfer functions; Voltage control;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.847879

Filename

847879