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Université de Strasbourg Northwestern Polytechnical University, Xi'an China (2012-09-03), Yann Hu;Deyuan Gao (Dir.)
Design of a low noise, limited area and full on-chip power management for CMOS pixel sensors in high energy physics experiments
Jia Wang1
(03/09/2012)

What are the elementary particles and how did the universe originate are the main driving forces in the high energy physics. In order to further demonstrate the standard model and discover new physics, several detectors are built for the high energy physics experiments. CMOS pixel sensors (CPS) can achieve an attractive tradeoff among many performance parameters, such as readout speed, granularity, material budget, power dissipation, radiation tolerance and integrating readout circuitry on the same substrate, compared with the hybrid pixel sensors and charge coupled devices. Thus, the CPS is a good candidate for tracking the charged particles in vertex detectors and beam telescopes.The power distribution becomes an important issue in the future detectors, since a considerable amount of sensors will be installed. Unfortunately, the independent powering has been proved to fail. In order to solve the power distribution challenges and to provide noiseless voltages, this thesis focuses on the design of a low noise, limited area, low power consumption and full on-chip power management in CPS chips. The CPS are firstly introduced drawing the design requirements of the power management. The power distribution dedicated to CPS chips is then proposed, in which the power management is utilized as the second power conversion stage. Two full on-chip regulators are proposed to generate the analog power supply voltage and the reference voltage required by correlated double sampling operation, respectively. Two prototypes have verified these regulators. They can meet the requirements of CPS. Moreover, the power management techniques and the radiation tolerance design are also presented in this thesis.
1 :  IPHC - Institut Pluridisciplinaire Hubert Curien
Institut pluridisciplinaire Hubert Curien (Strasbourg)
Sciences de l'ingénieur/Autre
CMOS pixel sensors (CPS) – Full on-chip – Linear regulator – Low noise – Low dropout (LDO) regulator – Monolithic active pixel sensors (MAPS) – Power management
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