CERN Accelerating science

Published Articles
Title	Stabilization and Protection of the Shunt-LDO regulator for the HL-LHC pixel detector upgrades
Author(s)	Kampkoetter, Jeremias (Applied Sci. U., Dortmund) ; Karagounis, Michael (Applied Sci. U., Dortmund) ; Stiller, Andreas (Applied Sci. U., Dortmund) ; Traversi, Gianluca (Bergamo U.) ; Luengo, Alvaro Pradas (Zaragoza, ITA) ; Koukola, Dominik (CERN) ; Orfanelli, Stella (CERN) ; Hinterkeuser, Florian (Bonn U.)
Publication	SISSA, 2020
Number of pages	5
In:	PoS TWEPP2019 (2020) 067
In:	TWEPP 2019 Topical Workshop on Electronics for Particle Physics, Santiago De Compostela, Spain, 2 - 6 Sep 2019, pp.067
DOI	10.22323/1.370.0067
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS CERN LHC ; CMS
Project	CERN HL-LHC
Abstract	Serial powering is the baseline option for the pixel detectors in both the ATLAS and the CMS experiments targeting the phase II HL-LHC upgrade. The Shunt-LDO regulator is integrated in the front-end chips to generate the required supply voltages. A new compensation scheme has been developed to assure stable operation with large on-chip low-ESR (equivalent series resistance) load capacitances. A two-stage bandgap voltage reference circuit has been implemented to improve regulation performance. Security features have been added to protect against overvoltage and overload. Additional features have been added to allow regulator operation with small supply currents during the installation phase.
Copyright/License	publication: © 2019-2024 The Authors (License: CC-BY-NC-ND-4.0)

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