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A very simple analog control for QSW-ZVS source/sink dc-dc converters with seamless mode transition

Author:
Vázquez Ardura, AitorUniovi authority; Martín Díaz, KevinUniovi authority; Arias Pérez de Azpeitia, ManuelUniovi authority; Sebastián Zúñiga, Francisco JavierUniovi authority
Subject:

TCM

HCMC

Publication date:
2019
Editorial:

IEEE

Publisher version:
http://dx.doi.org/10.1109/APEC.2019.8721813
Descripción física:
p. 220-226
Abstract:

A simple, analog, control circuit is proposed for seamless transition between source and sink modes in a Quasi-Square-Wave Zero Voltage Switching (QSW-ZVS) source/sink dc-dc converters. The inductor current is controlled by a variable-width hysteretic current mode control. The upper and lower bounds of the hysteretic band are clamped to ensure QSW-ZVS operation with a single current command and independently from the power flow direction. This enables the control of any PWM converter able to operate in QSW-ZVS with a single control loop. Implementing a complex multi-mode or look-up-table based digital control is no longer required. A 50W buck converter and a 100W boost converter are built to demonstrate the proposed control circuit

A simple, analog, control circuit is proposed for seamless transition between source and sink modes in a Quasi-Square-Wave Zero Voltage Switching (QSW-ZVS) source/sink dc-dc converters. The inductor current is controlled by a variable-width hysteretic current mode control. The upper and lower bounds of the hysteretic band are clamped to ensure QSW-ZVS operation with a single current command and independently from the power flow direction. This enables the control of any PWM converter able to operate in QSW-ZVS with a single control loop. Implementing a complex multi-mode or look-up-table based digital control is no longer required. A 50W buck converter and a 100W boost converter are built to demonstrate the proposed control circuit

URI:
http://hdl.handle.net/10651/52787
ISBN:
978-1-5386-8330-9
DOI:
10.1109/APEC.2019.8721813
Patrocinado por:

This work was supported in part by the Spanish Government under Project MINECO-17-DPI2016-75760-R, in part by the Principality of Asturias under Severo Ochoa grant BP14-085 and by European Regional Development Fund (ERDF) grants

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