dc.contributor
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.contributor
Universitat Politècnica de Catalunya. EPIC - Energy Processing and Integrated Circuits
dc.contributor.author
Baheri, Javad
dc.contributor.author
Saberkari, Alireza
dc.contributor.author
Khorgami, Omid
dc.contributor.author
Alarcón Cot, Eduardo José
dc.date.issued
2018-03-20
dc.identifier
Baheri, J., Saberkari, A., Khorgami, O., Alarcon, E. Design and implementation of a sliding-mode controller for digital low-dropout/linear regulators. "IEEE transactions on circuits and systems II: express briefs", 20 Març 2018, vol. 65, núm. 12, p. 1889-1893.
dc.identifier
https://hdl.handle.net/2117/118046
dc.identifier
10.1109/TCSII.2018.2817482
dc.description.abstract
This paper presents an approach to utilize of sliding-mode (SM) controller in digital low-dropout/linear regulators. Various design aspects, including the extraction of the regulator state-space model and sliding coefficients by considering the hitting, existence, and stability conditions are described. Moreover, the freeze control block is introduced as a solution to compensate the high frequency chattering phenomenon of SM, resulting in reduction of switching losses. In order to verify the statements, a quasi digital low-dropout/linear regulator (QDLDO) is implemented in a discrete form on a PCB. The circuit consists of the proposed current-mode current feedback amplifier (CFA)-based SM controller and switchedmode PMOS array driven by a bidirectional serial shift register, which is controlled by the SM controller. The results reveal that the controller detects the load changes rapidly, and eliminates the output limit-cycle oscillation, providing a robust and stable output voltage.
dc.description.abstract
Peer Reviewed
dc.description.abstract
Postprint (author's final draft)
dc.format
application/pdf
dc.relation
https://ieeexplore.ieee.org/document/8320310/
dc.subject
Àrees temàtiques de la UPC::Enginyeria electrònica::Microelectrònica::Circuits integrats
dc.subject
Integrated circuits
dc.subject
Shift registers
dc.subject
Integrated circuits
dc.subject
Circuits integrats
dc.title
Design and implementation of a sliding-mode controller for digital low-dropout/linear regulators
