An Integrated Driver With Adaptive Dead-Time Control for GaN-Based Synchronous Buck Converter
Journal
IEEE Transactions on Circuits and Systems II: Express Briefs
Journal Volume
69
Journal Issue
2
Pages
539-543
Date Issued
2022
Author(s)
Abstract
This brief proposes a driver integrated circuit (IC) for a GaN-based synchronous buck converter to minimized the dead-time loss of GaN devices and improve converter efficiency. The proposed adaptive control achieves minimized dead-time for any loading condition. A driver IC is fabricated in a 0.18 μm BCD process to verify the concept. The measurement result achieves only 0.7 ns and 0.8 ns dead-time at the minimum and maximum load condition, respectively. The efficiency improves 2.1% at 2 A full load compared to the fixed dead-time control counterpart. ? 2021 IEEE.
Subjects
Buck converters
Control systems
Delays
Integrated circuits
Loading
Switches
Threshold voltage
Efficiency
Gallium nitride
III-V semiconductors
Adaptive Control
Converter efficiency
Dead-time loss
Driver integrated circuits
Integrated driver
Loading condition
Maximum load
Synchronous buck converter
DC-DC converters
Type
journal article