A low-cost digital controller for a switching DC converter with improved voltage regulation

M. Murshidul Islam; David Allee; Siva Konasani; Armando Rodriguez

doi:10.1109/LPEL.2004.840256

A low-cost digital controller for a switching DC converter with improved voltage regulation

M. Murshidul Islam, David Allee, Siva Konasani, Armando Rodriguez

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

A new control algorithm with improved regulation is presented for a switching dc buck converter. The controller is realized with hardware description language (HDL) and can be implemented in any process. The controller uses four decision levels, combines pulse frequency modulation (PFM), pulse width modulation (PWM), and uses dithering for improved regulation. The controller is prototyped on a field programmable gate array (FPGA) and experimental results show good performance over input and load disturbances. Importantly, the controller does not require high resolution analog-to-digital conversion for signal processing, and also does not require fast digital clocking. This controller has significant potential to be widely used in industrial applications where cost and design time are of great concern.

Original language	English (US)
Pages (from-to)	121-124
Number of pages	4
Journal	IEEE Power Electronics Letters
Volume	2
Issue number	4
DOIs	https://doi.org/10.1109/LPEL.2004.840256
State	Published - Dec 2004

Keywords

Dc-dc
Digital controls
Dithering
Duty
Field programmable gate array (FPGA)
Pulse frequency modulation (PFM)
Pulse width modulation (PWM)
Rapid prototype
Regulation

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/LPEL.2004.840256

Cite this

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A low-cost digital controller for a switching DC converter with improved voltage regulation

Abstract

Keywords

ASJC Scopus subject areas

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