Loading…

Monolithic GaN-Based Gate Driver With On-Chip Adaptive On-Time Controller and Negative Current Slope Detector to Prevent Shoot-Through

This letter proposes a monolithic gallium nitride (GaN) primary-side controller for a flyback converter, consisting mainly of a negative current slope (NCS) detector to suppress shoot-through problems caused by GaN process defects. Moreover, the proposed adaptive on-time (AOT) controller can adapt t...

Full description

Saved in:
Bibliographic Details
Published in:IEEE solid-state circuits letters 2023, Vol.6, p.217-220
Main Authors: Lin, Shu-Yung, Lin, Ssu-Yu, Hung, Sheng-Hsi, Wang, Tz-Wun, Li, Ching-Ho, Go, Chang-Lin, Huang, Shao-Chang, Chen, Ke-Horng, Zheng, Kuo-Lin, Lin, Ying-Hsi, Lin, Shian-Ru, Tsai, Tsung-Yen
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This letter proposes a monolithic gallium nitride (GaN) primary-side controller for a flyback converter, consisting mainly of a negative current slope (NCS) detector to suppress shoot-through problems caused by GaN process defects. Moreover, the proposed adaptive on-time (AOT) controller can adapt to changes in the input voltage and limit the maximum allowable switching frequency to achieve high efficiency. Furthermore, the diode turn-on voltage compensated gate driver also enhances the ability to drive the on-chip 650-V power GaN switch. Therefore, the proposed fully integrated GaN-based chip can improve the efficiency by 2% as the deadtime is reduced from 40 to 7 ns. The proposed gate driver has a peak efficiency of 96.2% and a maximum current of 6 A.
ISSN:2573-9603
2573-9603
DOI:10.1109/LSSC.2023.3301151