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 journalArticle

20 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)121-124
Number of pages4
JournalIEEE Power Electronics Letters
Volume2
Issue number4
DOIs
StatePublished - Dec 2004

Fingerprint

Voltage control
Controllers
Costs
Pulse time modulation
Computer hardware description languages
Analog to digital conversion
Pulse width modulation
Industrial applications
Field programmable gate arrays (FPGA)
Signal processing

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

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Cite this

A low-cost digital controller for a switching DC converter with improved voltage regulation. / Islam, M. Murshidul; Allee, David; Konasani, Siva; Rodriguez, Armando.

In: IEEE Power Electronics Letters, Vol. 2, No. 4, 12.2004, p. 121-124.

Research output: Contribution to journalArticle

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