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Small signal model of Triangular Current Mode (TCM) operation for Bidirectional Source/Sink Buck and Boost Power Converters

Author:
Vázquez Ardura, AitorUniovi authority; Martín Díaz, KevinUniovi authority; Arias Pérez de Azpeitia, ManuelUniovi authority; González Lamar, DiegoUniovi authority; Rodríguez Rogina, MaríaUniovi authority; Sebastián Zúñiga, Francisco JavierUniovi authority
Subject:

Quasi-Square-Wave

Zero-Voltage-Switching

Triangular Current Mode

Hysteretic Current Mode Control

Publication date:
2020
Editorial:

IEEE

Publisher version:
http://dx.doi.org/10.1109/APEC39645.2020.9124387
Abstract:

This paper presents a small signal model for bidirectional source/sink buck and boost power converters operating in Triangular Current Mode (TCM) and controlled with a variable-width Hysteretic Current Mode Control (HCMC). The well-known current injected equivalent circuit approach (CIECA) has been applied to derive the canonical circuit. For the sake of simplicity, the resonant intervals during the dead-times have been obtained using a linear approximation. The theoretical small signal model has been validated using two different source/sink power converters: an 80 W synchronous buck converter from 48 V to 24 V and a 100 W synchronous boost converter from 24 V to 48 V. The transfer functions of this power converter have been measured using a Venable Frequency Response Analyzer (FRA6340) and compared to the theoretical ones

This paper presents a small signal model for bidirectional source/sink buck and boost power converters operating in Triangular Current Mode (TCM) and controlled with a variable-width Hysteretic Current Mode Control (HCMC). The well-known current injected equivalent circuit approach (CIECA) has been applied to derive the canonical circuit. For the sake of simplicity, the resonant intervals during the dead-times have been obtained using a linear approximation. The theoretical small signal model has been validated using two different source/sink power converters: an 80 W synchronous buck converter from 48 V to 24 V and a 100 W synchronous boost converter from 24 V to 48 V. The transfer functions of this power converter have been measured using a Venable Frequency Response Analyzer (FRA6340) and compared to the theoretical ones

URI:
http://hdl.handle.net/10651/53488
DOI:
10.1109/APEC39645.2020.9124387
Patrocinado por:

This work was supported by the Science, Innovation and University Ministry of the Spanish Government under Project RTI2018-099682-A-I00, by the Principality of Asturias under the project IDI/2018/000179 and by the European Regional Development Fund (ERDF) grants

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