A Two-stage Universal Input Charger with Wide Output Voltage Range

Mike Ranjram; Cheng Zhang; David Perreault

doi:10.1109/ECCE.2019.8913317

A Two-stage Universal Input Charger with Wide Output Voltage Range

Mike Ranjram
, Cheng Zhang
, David Perreault

EEE - Academic & Research

Massachusetts Institute of Technology

Research output: Contribution to conference › Paper › peer-review

Abstract

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.

Original language	English
DOIs	https://doi.org/10.1109/ECCE.2019.8913317
Publication status	Published - 2019
Event	The Eleventh Annual Energy Conversion Congress and Exposition - Baltimore, United States Duration: 29 Sept 2019 → 3 Oct 2019 http://www.ieee-ecce.org/2019/

Conference

Conference	The Eleventh Annual Energy Conversion Congress and Exposition
Abbreviated title	ECCE
Country/Territory	United States
City	Baltimore
Period	29/09/19 → 3/10/19
Internet address	http://www.ieee-ecce.org/2019/

Access to Document

10.1109/ECCE.2019.8913317

Cite this

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title = "A Two-stage Universal Input Charger with Wide Output Voltage Range",

abstract = "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.",

author = "Mike Ranjram and Cheng Zhang and David Perreault",

year = "2019",

doi = "10.1109/ECCE.2019.8913317",

language = "English",

note = "The Eleventh Annual Energy Conversion Congress and Exposition, ECCE ; Conference date: 29-09-2019 Through 03-10-2019",

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AU - Zhang, Cheng

AU - Perreault, David

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N2 - 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.

AB - 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.

U2 - 10.1109/ECCE.2019.8913317

DO - 10.1109/ECCE.2019.8913317

M3 - Paper

T2 - The Eleventh Annual Energy Conversion Congress and Exposition

Y2 - 29 September 2019 through 3 October 2019

ER -

A Two-stage Universal Input Charger with Wide Output Voltage Range

Abstract

Conference

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