Marc Kanzian, Matteo Agostinelli, Mario Huemer,
"Modeling and Simulation of Digital Control Schemes for Two-Phase Interleaved Buck Converters"
: Proceedings of the 24th Austrian Workshop on Microelectronics (Austrochip 2016), IEEE, Seite(n) 7-12, 10-2016, ISBN: 78-1-5090-1040-0
Original Titel:
Modeling and Simulation of Digital Control Schemes for Two-Phase Interleaved Buck Converters
Sprache des Titels:
Englisch
Original Buchtitel:
Proceedings of the 24th Austrian Workshop on Microelectronics (Austrochip 2016)
Original Kurzfassung:
The importance of energy-efficient DC voltage conversion is ever increasing. This demands for advanced topologies such as time-interleaved multiphase DC-DC converters. An essential part of such a converter is the control loop, which not
only regulates the output voltage, but also balances the currents of the individual phases. In this paper, a small-signal model of a two-phase buck converter is derived, and a linear voltage-mode controller is presented. Further, a current balancing scheme that only requires input current sensing is investigated. Finally, the benefits of a multisampled controller and digital pulse width modulator are highlighted.