An 8W-2MHz buck converter with adaptive dead time tolerant to radiation and high magnetic field

Author

Michelis, S. ; Allongue, B. ; Blanchot, G. ; Buso, S. ; Faccio, F. ; Fuentes, C. ; Marchioro, A. ; Orlandi, S. ; Saggini, S. ; Spiazzi, G. ; Kayal, M.

Author_Institution

CERN, Geneva, Switzerland

fYear

2010

fDate

14-16 Sept. 2010

Firstpage

438

Lastpage

441

Abstract

A high efficiency 8W-2MHz ASIC buck converter tolerant to radiation and high magnetic field is presented. A new adaptive control circuit for the dead time management is integrated to increase the efficiency during quasi-square wave (QSW) operation. The ASIC is designed in the IHP SGB25GOD 0.25μm technology and developed for the Large Handron Collider (LHC) experiments upgrade, where the main constrains are the presence of a severe radiation environment (up to hundreds of Mrad), a high magnetic field (up to 4 Tesla) and mass limitation because extra material is detrimental to the physics performance of the detector.

Keywords

adaptive control; application specific integrated circuits; power convertors; ASIC buck converter; IHP SGB25GOD; adaptive control circuit; dead time management; frequency 2 MHz; high magnetic field tolerance; large handron collider; power 8 W; quasi-square wave operation; radiation tolerance; size 0.25 mum; Application specific integrated circuits; Converters; Inductors; Layout; Logic gates; MOS devices; Magnetic fields;

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC, 2010 Proceedings of the

Conference_Location

Seville

ISSN

1930-8833

Print_ISBN

978-1-4244-6662-7

Type

conf

DOI

10.1109/ESSCIRC.2010.5619737

Filename

5619737