Digital CPM Controller for a Non-Inverting Buck-Boost Converter with Unified Hardware for Steady-State and Optimized Transient Conditions

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

This paper introduces a new current-programmed controller for non-inverting buck-boost (NIBB) converters. The controller facilitates tight voltage regulation and excellent transient convergence, all carried out through a simple current programmed mode (CPM) controller hardware. Steady-state operation for the full range of conversion ratios is supported with seamless transitions between modes and improved efficiency and ripple characteristics around unity conversion gain. In case of a load transient, an optimized boundary control scheme achieves near-optimal recovery, with programmable constraints for the voltage deviation and inductor current, covering the entire range of conversion ratios. The operation of the controller is experimentally verified on a 2-15 V input to 3.3 V output, NIBB converter, demonstrating a significant improvement in steady-state around unity gain as well as fast convergence for load transients with programmable constraints for the output voltage deviation and inductor current.

Original languageEnglish
Article number8955933
Pages (from-to)8794-8804
Number of pages11
JournalIEEE Transactions on Power Electronics
Volume35
Issue number8
DOIs
StatePublished - 1 Aug 2020

Keywords

  • Digital control
  • efficient energy processing
  • non-inverting buck-boost (NIBB)
  • state-space control

Fingerprint

Dive into the research topics of 'Digital CPM Controller for a Non-Inverting Buck-Boost Converter with Unified Hardware for Steady-State and Optimized Transient Conditions'. Together they form a unique fingerprint.

Cite this