CERN Accelerating science

CMS Note
Report number	CMS-CR-2016-349
Title	First Implementation of a Two-Stage DC-DC Conversion Powering Scheme for the CMS Phase-2 Outer Tracker
Author(s)	Feld, Lutz Werner (Aachen, Tech. Hochsch.) ; Gadek, Tomasz (CERN) ; Karpinski, Waclaw (Aachen, Tech. Hochsch.) ; Klein, Katja (Aachen, Tech. Hochsch.) ; Lipinski, Martin (Aachen, Tech. Hochsch.) ; Pauls, Alexander Josef (Aachen, Tech. Hochsch.) ; Preuten, Marius (Aachen, Tech. Hochsch.) ; Rauch, Max Philip (Aachen, Tech. Hochsch.) ; Wangelik, Frederik (Aachen, Tech. Hochsch.) ; Wlochal, Michael (Aachen, Tech. Hochsch.)
Publication	2017
Collaboration	CMS Collaboration
Imprint	09 Nov 2016
Number of pages	11
Published in:	JINST 12 (2017) C03090
Presented at	Topical Workshop on Electronics for Particle Physics, Karlsruhe, Germany, 26 - 30 Sep 2016, pp.C03090
DOI	10.1088/1748-0221/12/03/C03090
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; CMS
Keywords	Tracker ; SiliconTracker
Abstract	The 2S silicon strip modules for the CMS Phase-2 tracker upgrade will require two operating voltages. These will be provided via a two-step DC-DC conversion powering scheme, in which one DC-DC converter delivers 2.5\,V while the second DC-DC converter receives 2.5\,V at its input and converts it to 1.2\,V. The DC-DC converters will be mounted on a flex PCB, the service hybrid, together with an opto-electrical converter module (VTRx+) and a serializer (LP-GBT). The service hybrid will be mounted directly on the 2S module. A prototype service hybrid has been developed and its performance has been evaluated, including radiative and conductive noise emissions, and efficiency. In addition system tests with a prototype module have been performed. In this report the service hybrid will be described and the test results will be summarized.
Other source	Inspire
Copyright/License	Preprint: (License: CC-BY-4.0)