Title
A Reliability and Efficiency Optimization System for Hard-Switching DC/DC Converters
Abstract
The Large Hadron Collider experiments at CERN will use power distribution schemes relying on integrated buck DCIDC converters. Due to the radiation-hardness requirements, the devices used for the development of such converters will have a voltage rating which is close to the converters' input voltage. The voltage spikes generated during the hard-switching operation can affect the reliability of such low-voltage MOSFETs. A fixed and sufficiently small gate driver current for the high-side switch could be used to guarantee the reliable operation even in the worst-case conditions in terms of input voltage, output current, temperature and process variations. Nevertheless, this would result in a suboptimal efficiency in all the other working conditions. This work presents an integrated system than monitors in real-time the voltage stress, and adjusts the gate driver current to achieve maximum efficiency in all conditions, while ensuring compliance with the reliability specifications. A buck converter including the voltage peak detector and an adjustable gate driver current has been designed in a 130 nm technology, demonstrating the functionality of the voltage stress monitoring system.
Year
DOI
Venue
2018
10.1109/NEWCAS.2018.8585694
2018 16th IEEE International New Circuits and Systems Conference (NEWCAS)
Keywords
Field
DocType
DC-DC power conversion,Integrated circuit reliability
Voltage spike,Large Hadron Collider,Computer science,Voltage,Converters,Electronic engineering,Precision rectifier,MOSFET,Buck converter,Gate driver
Conference
ISSN
ISBN
Citations 
2472-467X
978-1-5386-4860-5
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Giacomo Ripamonti100.68
s michelis231.78
Federico Faccio3104.29
Stefano Saggini4143.08
Adil Koukab564.75
Maher Kayal66034.46