Autonomous Minimization of Power Loss by Switching Frequency Adjusting Function for a DC–DC Converter
Konferenz: PCIM Europe 2023 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
09.05.2023-11.05.2023 in Nürnberg, Germany
doi:10.30420/566091319
Tagungsband: PCIM Europe 2023
Seiten: 5Sprache: EnglischTyp: PDF
Autoren:
Kashiwagi, Junichi; Moriyama, Yohei; Yamaguchi, Atsushi; Nakahara, Ken (ROHM Co., Ltd., Japan)
Inhalt:
This study proposes an autonomous control scheme in which the power loss of a DC–DC converter is autonomously minimized by using switching frequency (fsw) adjustment. The power loss at a given time (Π) is calculated and retained, and the fsw for the next step is determined by comparing Π with that at the next time step, enabling autonomous control with a simple configuration. A 16V-to-3.9V DC–DC converter equipped with this function results in lower power loss than that of a converter with a constant fsw at various load conditions ranging from 8.2 to 15.6 W.