Preprint Article Version 1 This version is not peer-reviewed

Current Mode Control of a Series LC Converter Supporting Constant-Current Constant-Voltage (CCCV)

Version 1 : Received: 22 May 2019 / Approved: 23 May 2019 / Online: 23 May 2019 (12:58:27 CEST)

A peer-reviewed article of this Preprint also exists.

Heidinger, M.; Xia, Q.; Simon, C.; Denk, F.; Eizaguirre, S.; Kling, R.; Heering, W. Current Mode Control of a Series LC Converter Supporting Constant Current, Constant Voltage (CCCV). Energies 2019, 12, 2793. Heidinger, M.; Xia, Q.; Simon, C.; Denk, F.; Eizaguirre, S.; Kling, R.; Heering, W. Current Mode Control of a Series LC Converter Supporting Constant Current, Constant Voltage (CCCV). Energies 2019, 12, 2793.

Journal reference: Energies 2019, 12, 2793
DOI: 10.3390/en12142793

Abstract

This paper presents a control algorithm for soft-switching series LC converters. The conventional voltage-to-voltage controller is split into a master and a slave controller. The master controller implements constant-current-constant-voltage (CCCV) control, required for demanding applications, i.e. lithium battery charging or laboratory power supplies. It defines the set-current for the open-loop current slave controller, which generates the PWM parameters. The power supply achieves fast large-signal responses, e.g. from 5 V to 24 V, where 95% of the target value is reached in less than 400 µs. The design is evaluated extensively in simulation and on a prototype. A consensus between simulation and measurement is achieved.

Subject Areas

control; current mode control; voltage control; transfer function; power converter; soft-switching converter; battery charging;

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