An integrated buck-boost DC/DC converter for interfacing battery sources to capacitive loads such as supercapacitors is presented. The converter features a current regulation circuit on the source side, which applies a predefined constant DC current to the battery source, thus preventing the application of sharp current pulses generally associated with conventional DC/DC switching activity and resulting in long-term battery degradation. In fact, flat current shaping positively affects lifetime of battery sources. A specific digital control technique is proposed, which guarantees low energy losses during conversion by implementing a stepwise pseudo-adiabatic energy transfer that limits the maximum current inside the circuit and reduces the damping effect on current oscillation due to resistive paths.

Implementation of a DC/DC converter with stepwise charge and improved battery lifetime

Pizzotti M.;Tartagni M.;Romani A.;
2019

Abstract

An integrated buck-boost DC/DC converter for interfacing battery sources to capacitive loads such as supercapacitors is presented. The converter features a current regulation circuit on the source side, which applies a predefined constant DC current to the battery source, thus preventing the application of sharp current pulses generally associated with conventional DC/DC switching activity and resulting in long-term battery degradation. In fact, flat current shaping positively affects lifetime of battery sources. A specific digital control technique is proposed, which guarantees low energy losses during conversion by implementing a stepwise pseudo-adiabatic energy transfer that limits the maximum current inside the circuit and reduces the damping effect on current oscillation due to resistive paths.
2019
2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
526
529
Pizzotti M.; Tartagni M.; Romani A.; Zappa R.; Corbani S.; Ricotti G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/741860
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