A Two-stage Universal Input Charger with Wide Output Voltage Range
Name
Ranjram Zhang ECCE2019_BoostVIRTadapter_submission.pdf
Description
Accepted version
Size
1.39 MB
Format
Adobe PDF
Checksum (MD5)
c7b2f9415a280677ebcd4a1f948442d2
Author(s)
Ranjram, Mike K
Zhang, Cheng
Perreault, David J
Date Issued
2019
Journal
2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Ranjram, Mike K, Zhang, Cheng and Perreault, David J. 2019. "A Two-stage Universal Input Charger with Wide Output Voltage Range." 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019.
Version
Author's final manuscript
Abstract
© 2019 IEEE. This paper presents the design of a two-stage 50W portable charger architecture with universal ac input and 5V/25W, 9V/45W, 12V/50W output. A 98.5% efficient valley-switched boost converter operating at 0.5-2MHz enables a 47% reduction in the buffer capacitor volume while a stacked-bridge LLC converter with a Variable-Inverter-Rectifier-Transformer (VIRT) offers greater than 96% efficiency across the wide output voltage range. The design demonstrates the potential and trade-offs of a two-stage architecture at this operating power.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/ECCE.2019.8913317
