5V-to-4V integrated buck converter for battery charging applications with an on-chip decoupling capacitor

Gabian, Gabriel; Blalock, Benjamin J.; Costinett, Daniel

doi:10.1109/apec.2017.7930690

Cited by 6 publications

(1 citation statement)

References 11 publications

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“…Conventioanl DC-DC power converter for low-power battery charging application can not meet all the emerging requirements thus needed to be further improved [1], [2]. The QSW Buck converter is the most common topology for this application and with the new GaN HEMTs and ferrite materials, it can achieve a high efficiency and high power density [3]- [6]. However, at high output current operation, the efficiency is still limited by conduction loss from switches and the magnetics windings.…”

Section: Introductionmentioning

confidence: 99%

Design the High-frequency DC-DC Converter with Integrated Coupled Inductor and Current-Balancing-Transformer

Dou

Ouyang

Andersen

2020

2020 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper presents a design for a high-frequency DC-DC converter with the coupled inductor and integrated current balancing transformer. The converter can deliver 32 W from 12 V intput to the 4 V output. A high efficiency and high power density are achieved by ZVS turn-on and the magnetic integrated. In order to deliver a 6 A rated output current, a twophase QSW Buck converter operating at the synchronous mode is seleted as the topology to reduce the conduction loss both for the switches and the windings. The current unbalancing issue is solved by an integrated magnetic component with a customized core. The semiconductors selection and the core design are also discussed in the paper. A 1 MHz prototype is built to verify the design process. The prototype achieves 97.45% efficiency at 4 V/ 6 A output and the ZVS turn-on capability is also verified experimentally.

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Section: Introductionmentioning

confidence: 99%