|
1.
|
A Dual-Edge Pulsewidth Modulator for Fast Dynamic Response DC–DC Converters
/ Ripamonti, Giacomo (CERN) ; Saggini, Stefano (Udine U.) ; Corradini, Luca (Padua U.) ; Rizzolatti, Roberto (Udine U.) ; Faccio, Federico (CERN) ; Michelis, Stefano (CERN) ; Koukab, Adil (Ecole Polytechnique, Lausanne) ; Kayal, Maher (Ecole Polytechnique, Lausanne)
Voltage regulator modules are dc–dc converters that
power modern microprocessors. They must exhibit a fast dynamic
response, in order to achieve satisfactory regulation performance
in spite of the rapid load current variations. [...]
2019 - 5 p.
- Published in : IEEE Transactions on Power Electronics 34 (2019) 28-32
|
|
|
2.
|
2.5V step-down DCDCs: a radiation-hard solution for power conversion
/ Ripamonti, Giacomo (Ecole Polytechnique, Lausanne ; CERN) ; Michelis, Stefano (CERN) ; Faccio, Federico (CERN) ; Saggini, Stefano (Udine U.) ; Ursino, Mario (Udine U.) ; Blanchot, Georges (CERN) ; Caregari, Stefano (Ecole Polytechnique, Lausanne ; CERN) ; Koukab, Adil (Ecole Polytechnique, Lausanne) ; Kayal, Maher (Ecole Polytechnique, Lausanne)
Radiation- and magnetic field tolerant DCDC converters that step down the voltage from a 2.5 V bus are needed for the High-Luminosity detectors. This work presents the developed prototypes, based on ASICs designed in a 130 nm CMOS technology. [...]
SISSA, 2020 - 5 p.
- Published in : PoS TWEPP2019 (2020) 071
Fulltext: PDF;
In : TWEPP 2019 Topical Workshop on Electronics for Particle Physics, Santiago De Compostela, Spain, 2 - 6 Sep 2019, pp.071
|
|
|
3.
|
A Reliability and Efficiency Optimization System for Hard-Switching DC/DC Converters
/ Ripamonti, Giacomo (CERN) ; Michelis, Stefano (CERN) ; Faccio, Federico (CERN) ; Saggini, Stefano (Udine U.) ; Koukab, Adil (Ecole Polytechnique, Lausanne) ; Kayal, Maher (Ecole Polytechnique, Lausanne)
The Large Hadron Collider experiments at CERN will use power distribution schemes relying on integrated buck DCIDC converters. Due to the radiation-hardness requirements, the devices used for the development of such converters will have a voltage rating which is close to the converters' input voltage. [...]
2018 - 5 p.
- Published in : 10.1109/NEWCAS.2018.8585694
In : 16th IEEE International New Circuits and Systems Conference, Montreal, Canada, 24 - 28 Jun 2018, pp.157-161
|
|
|
4.
|
|
|
5.
|
A 2.5V Step-Down DC-DC Converter for Two-Stages Power Distribution Systems
/ Ripamonti, Giacomo (Ecole Polytechnique, Lausanne ; CERN) ; Michelis, Stefano (CERN) ; Faccio, Federico (CERN) ; Blanchot, Georges (CERN) ; Saggini, Stefano (U. Udine (main)) ; Rizzolatti, Roberto (U. Udine (main)) ; Ursino, Mario (U. Udine (main)) ; Koukab, Adil (Ecole Polytechnique, Lausanne) ; Kayal, Maher (Ecole Polytechnique, Lausanne)
A prototype second-stage buck DC-DC converter has been designed in 130 nm CMOS and fully characterized. This circuit provides up to 3 A at an adjustable output voltage of 0.6-1.5 V from an intermediate bus voltage of 2.5 V. [...]
SISSA, 2018 - 5 p.
- Published in : PoS TWEPP-17 (2018) 059
Fulltext: PDF; External link: PoS server
In : Topical Workshop on Electronics for Particle Physics, Santa Cruz, Ca, United States Of America, 11 - 15 Sep 2017, pp.059
|
|
|
6.
|
Characterization of a 9-decade femtoampere ASIC front-end for radiation monitoring
/ Voulgari, Evgenia (CERN ; Ecole Polytechnique, Lausanne) ; Noy, Matthew (CERN) ; Anghinolfi, Francis (CERN) ; Perrin, Daniel (CERN) ; Krummenacher, François (Ecole Polytechnique, Lausanne) ; Kayal, Maher (Ecole Polytechnique, Lausanne)
An ultra-low current sensing digitizer circuit was designed for radiation monitoring for personnel and environmental safety at CERN.The Ultralow Picoammeter 2 (Utopia 2) ASIC includes some key functionalities like on-chip active leakage current compensation, charge balancing and range changing. It was designed in AMS 0.35 $\mu$m technology that was selected for its low leakage current performance. [...]
SISSA, 2017 - 5 p.
- Published in : PoS TWEPP-17 (2017) 003
Fulltext: PDF; External link: PoS server
In : Topical Workshop on Electronics for Particle Physics, Santa Cruz, Ca, United States Of America, 11 - 15 Sep 2017, pp.003
|
|
|
7.
|
A 9-decade current to frequency converter with active leakage compensation
/ Voulgari, Evgenia (CERN) ; Noy, Matthew (CERN) ; Anghinolfi, Francis (CERN) ; Perrin, Daniel (CERN) ; Krummenacher, François (Ecole Polytechnique, Lausanne) ; Kayal, Maher (Ecole Polytechnique, Lausanne)
An Application Specific Integrated Circuit (ASIC) that is able to digitize input current starting from a few femtoamperes (fA) up to microamperes (μA), was designed for the environmental monitoring of the background radiation and for radiation protection at CERN. The Ultra-low Picoammeter 2 (Utopia 2) ASIC, is based on the current to frequency converter (CFC) architecture and can compensate for the net input leakage currents due to a dummy channel scheme. [...]
2017 - 4 p.
- Published in : 10.1109/NEWCAS.2017.8010176
In : 15th IEEE International New Circuits and Systems Conference, Strasbourg, France, 25 - 28 Jun 2017, pp.345-348
|
|
|
8.
|
Substrate-currents-aware characterization of an integrated buck DC/DC converter for floor-plan optimization
/ Ripamonti, Giacomo (CERN) ; Michelis, Stefano (CERN) ; Buccella, Pietro (Ecole Polytechnique, Lausanne) ; Koukab, Adil (Ecole Polytechnique, Lausanne) ; Kayal, Maher (Ecole Polytechnique, Lausanne)
The performance of integrated DC/DC converters is affected by substrate parasitic devices, such as bipolar transistors and thyristors: these devices cause enhanced substrate noise that can lead to the malfunctioning of the control circuitry, they degrade the efficiency, and thyristors can even cause the failure of the converter by latch-up. Due to the lack of software tools for the evaluation of the effects of such parasitic devices in the design phase, often only qualitative counter-measures are taken. [...]
2017 - 4 p.
- Published in : 10.1109/NEWCAS.2017.8010132
In : 15th IEEE International New Circuits and Systems Conference, Strasbourg, France, 25 - 28 Jun 2017, pp.169-172
|
|
|
9.
|
Design and Measurement Methodology for a Sub-picoampere Current Digitiser
/ Voulgari, Evgenia (Ecole Polytechnique, Lausanne) ; Noy, Matthew (CERN) ; Anghinolfi, Francis (CERN) ; Krummenacher, François (Ecole Polytechnique, Lausanne) ; Kayal, Maher (Ecole Polytechnique, Lausanne)
This paper introduces some design and measurement techniques that were used in the design and the testing of an ASIC for ultra-low current sensing. The idea behind this paper is to present the limitations in sub-picoampere current measurements and demonstrate an ASIC that can accurately measure the different sources of leakage currents and the methodology of measuring. [...]
2015
In : 22nd International Conference on Mixed Design of Integrated Circuits & Systems, Torun, Poland, 25 - 27 Jun 2015, pp.525-529
|
|
email alert
or subscribe to the 
RSS feed.