Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 33, Issue 1, Pages 32-36Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2017.2716934
Keywords
Boundary conduction mode (BCM); current mirroring; dc-dc GaN boost converter; SenseFET; SenseGaN; zero current detection; zero current switching
Categories
Funding
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1610250] Funding Source: National Science Foundation
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This letter presents a control scheme to operate a boost converter in boundary conduction mode (BCM). In the proposed method, it is assumed that the zero-current information is not available for controlling the converter operation mode. Therefore, a cursor is identified to detect the converter operation mode, i.e., continuous conduction mode/BCM. Details of the cursor and associated control method will be discussed in this letter. We demonstrate experimentally the effectiveness of the proposed method on a GaN boost converter whose active switch current is monitored through a current-mirroring technique.
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