CINECA IRIS Institutional Research Information System
IRIS è la piattaforma adottata dall’Università degli Studi di Udine per gestire l’archivio aperto dei prodotti della ricerca. L’archivio contiene articoli, contributi in volume, monografie, interventi pubblicati in atti di convegno, Tesi di dottorato e altri materiali.
EnglishThis letter presents a linearization technique for multisampled pulsewidth modulators (MSPWMs) employed in digitally controlled dc-dc converters. MSPWMs, i.e., PWMs operated at a sampling rate strictly higher than the switching frequency, greatly reduce the significant small-signal phase lag exhibited by conventional single-sampled PWMs, thus enabling for high-bandwidth design. On the other hand, the increased sampling frequency generates nonlinear phenomena known as sampling-induced dead bands, which represent zero differential gain regions in the modulator transcharacteristic that degrade the system closed-loop operation. This letter proposes a correction algorithm that allows for dead band removal, thus linearizing the PWM behavior, while still retaining the multisampling benefits. This result is achieved by a simple solution that can be easily implemented with simple hardware requirements. Simulation and experimental results on a dc-dc synchronous buck converter are provided to show the effectiveness and overall simplicity of the proposed solution.
Elimination of Sampling-Induced Dead Bands in Multiple-Sampled Pulsewidth Modulators for DC DC Converters / Corradini, L.; Mattavelli, Paolo; Saggini, Stefano. - In: IEEE TRANSACTIONS ON POWER ELECTRONICS. - ISSN 0885-8993. - 24:11(2009), pp. 2661-2665.
| Titolo: | Elimination of Sampling-Induced Dead Bands in Multiple-Sampled Pulsewidth Modulators for DC DC Converters | |
| Autori: | ||
| Data di pubblicazione: | 2009 | |
| Rivista: | ||
| Citazione: | Elimination of Sampling-Induced Dead Bands in Multiple-Sampled Pulsewidth Modulators for DC DC Converters / Corradini, L.; Mattavelli, Paolo; Saggini, Stefano. - In: IEEE TRANSACTIONS ON POWER ELECTRONICS. - ISSN 0885-8993. - 24:11(2009), pp. 2661-2665. | |
| Abstract: | This letter presents a linearization technique for multisampled pulsewidth modulators (MSPWMs) employed in digitally controlled dc-dc converters. MSPWMs, i.e., PWMs operated at a sampling rate strictly higher than the switching frequency, greatly reduce the significant small-signal phase lag exhibited by conventional single-sampled PWMs, thus enabling for high-bandwidth design. On the other hand, the increased sampling frequency generates nonlinear phenomena known as sampling-induced dead bands, which represent zero differential gain regions in the modulator transcharacteristic that degrade the system closed-loop operation. This letter proposes a correction algorithm that allows for dead band removal, thus linearizing the PWM behavior, while still retaining the multisampling benefits. This result is achieved by a simple solution that can be easily implemented with simple hardware requirements. Simulation and experimental results on a dc-dc synchronous buck converter are provided to show the effectiveness and overall simplicity of the proposed solution. | |
| Handle: | http://hdl.handle.net/11390/881307 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| 05204137.pdf | Altro materiale allegato | Non pubblico | Accesso ristretto Richiedi una copia |
http://hdl.handle.net/11390/881307
Copyright © 2021