TY - GEN
T1 - Unified current-programmed digital controller for non-inverting buck-boost converter with optimal steady-state and transient conditions
AU - Urkin, Tom
AU - Peretz, Mor Mordechai
N1 - Publisher Copyright: © 2019 IEEE.
PY - 2019/5/24
Y1 - 2019/5/24
N2 - This paper introduces a new current-programmed controller for non-inverting buck-boost converters. The controller facilitates tight voltage regulation and excellent transient convergence, all carried out through a simple 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 constrains for the voltage deviation and inductor current, covering the entire range of conversion ratios. The operation of the controller is experimentally verified on a 2-15V input to 3.3V output, non-inverting buck-boost converter, demonstrating 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.
AB - This paper introduces a new current-programmed controller for non-inverting buck-boost converters. The controller facilitates tight voltage regulation and excellent transient convergence, all carried out through a simple 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 constrains for the voltage deviation and inductor current, covering the entire range of conversion ratios. The operation of the controller is experimentally verified on a 2-15V input to 3.3V output, non-inverting buck-boost converter, demonstrating 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.
KW - Digital control
KW - Efficient energy processing
KW - Non-inverting buck-boost
KW - State-space control
UR - http://www.scopus.com/inward/record.url?scp=85067122558&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/APEC.2019.8721978
DO - https://doi.org/10.1109/APEC.2019.8721978
M3 - Conference contribution
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 199
EP - 206
BT - 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
T2 - 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Y2 - 17 March 2019 through 21 March 2019
ER -