Title :
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
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;
Conference_Titel :
ESSCIRC, 2010 Proceedings of the
Conference_Location :
Seville
Print_ISBN :
978-1-4244-6662-7
DOI :
10.1109/ESSCIRC.2010.5619737
