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MPPT Boost Converter with AFE for MIC-Based Solar Power Systems

  • Haechan Park
  • , Jooyun Oh
  • , Jaehyeok Lee
  • , Sungwan Hong
  • , Joongho Choi
  • University of Seoul

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this study, a maximum power point tracking (MPPT) boost converter for module integrated converter (MIC) based solar power systems is proposed. Eight converters are series-connected to generate a 380 V DC-link voltage for a DCAC inverter system. The output current of the PV panel is controlled by each converter to operate at its maximum power point (MPP). The designed IC is composed of an analog frontend (AFE) and a current-mode boost converter controller. Digital MPPT is performed by a microcontroller (MCU) to ensure accurate operation. Fabricated in a 180 nm BCDMOS process, the IC has a die area of 12.5mm2. The single converter achieved power conversion efficiency of up to 97.1%. The stable operation of a three-converter stack was also verified.

Original languageEnglish
Title of host publicationProceedings - 2025 21st IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331589073
DOIs
StatePublished - 2025
Event2025 21st IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2025 - Busan, Korea, Republic of
Duration: 12 Oct 202515 Oct 2025

Publication series

NameProceedings - 2025 21st IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2025

Conference

Conference2025 21st IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2025
Country/TerritoryKorea, Republic of
CityBusan
Period12/10/2515/10/25

Keywords

  • AFE
  • boost converter
  • GaN
  • MIC
  • MPPT
  • stack

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