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 language | English |
|---|---|
| Article number | 8955933 |
| Pages (from-to) | 8794-8804 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 35 |
| Issue number | 8 |
| DOIs | |
| State | Published - 1 Aug 2020 |
Keywords
- Digital control
- efficient energy processing
- non-inverting buck-boost (NIBB)
- state-space control
ASJC Scopus subject areas
- Electrical and Electronic Engineering