Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Juergen Wittmann"'
Autor:
Tanushree Jaitly, Christopher Lischer, Hans-Martin Jaeck, Arif B. Ekici, Julio Vera, Juergen Wittmann, Jan Doerrie, Niels Schaft, Xin Lai, Steffen Uebe, Kerstin F. Gerer, Martin Eberhardt, Florian S. Dreyer, Martina Cantone
Dendritic cells (DCs) are professional antigen-presenting cells that induce and regulate adaptive immunity by presenting antigens to T cells. Due to their coordinative role in adaptive immune responses, DCs have been used as cell-based therapeutic va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34881df78edd5250ca1112061cfebf1b
https://doi.org/10.1101/2020.09.10.287847
https://doi.org/10.1101/2020.09.10.287847
Publikováno v:
Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits ISBN: 9783030252663
Wearables and IoT devices cover a large design space for power management. Sensor applications require a very efficient standby mode to allow an operation over several years with one battery, while battery charging or data processing utilizes voltage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1076dc7777587b7a12f3513c18e5777
https://doi.org/10.1007/978-3-030-25267-0_8
https://doi.org/10.1007/978-3-030-25267-0_8
Autor:
Jürgen Wittmann
This book provides readers with guidelines for designing integrated multi-MHz-switching converters for input voltages/system supplies up to 50V or higher. Coverage includes converter theory, converter architectures, circuit design, efficiency, sizing
Publikováno v:
IEEE Journal of Solid-State Circuits. 51:1705-1715
A highly integrated synchronous buck converter with a predictive dead time control for input voltages ${ > } 18\,\text{V}$ with 10 MHz switching frequency is presented. A high resolution dead time of ${\sim} 125\,\text{ps}$ allows to reduce dead time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32aadfba1b2994a7618d855cdfed0a70
https://doi.org/10.1109/jssc.2016.2550498
https://doi.org/10.1109/jssc.2016.2550498
Publikováno v:
Advances in Radio Science, Vol 12, Pp 111-115 (2014)
Size and cost of a switched mode power supply can be reduced by increasing the switching frequency. This leads especially at a high input voltage to a decreasing efficiency caused by switching losses. Conventional calculations are not suitable to pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5f73cf94c45900dcd5c4d4be12f838a
https://www.adv-radio-sci.net/12/111/2014/
https://www.adv-radio-sci.net/12/111/2014/
Publikováno v:
ESSCIRC
The presented wide-V in step-down converter introduces a parallel-resonant converter (PRC), comprising an integrated 5-bit capacitor array and a 300 nH resonant coil, placed in parallel to a conventional buck converter. Unlike conventional resonant c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72d38eaeade03c83d49110d100f5c1a0
https://doi.org/10.1109/esscirc.2017.8094597
https://doi.org/10.1109/esscirc.2017.8094597
Publikováno v:
IEEE Transactions on Power Electronics. 28:4594-4602
The charge pump belongs to the most critical blocks for electromagnetic compatibility (EMC) of low dropout linear regulators (LDO) because of its switching nature. The goal of this paper is to contribute charge pump design practice and a prediction m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e703a184b909605d9ce4af1e9859ab19
https://doi.org/10.1109/tpel.2012.2232785
https://doi.org/10.1109/tpel.2012.2232785
Publikováno v:
2016 IEEE Applied Power Electronics Conference and Exposition (APEC).
An integrated synchronous buck converter with a high resolution dead time control for input voltages up to 48V and 10MHz switching frequency is presented. The benefit of an enhanced dead time control at light loads to enable zero voltage switching at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1364a7e8bc8c68bf9a6adebd5a7988ba
https://doi.org/10.1109/apec.2016.7467859
https://doi.org/10.1109/apec.2016.7467859
Publikováno v:
ESSCIRC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41944a9f974a49f7105c250936521e01
https://doi.org/10.1109/esscirc.2015.7313859
https://doi.org/10.1109/esscirc.2015.7313859
Autor:
Juergen Wittmann, Bernhard Wicht
Publikováno v:
2015 11th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME).
Size and cost of a switched mode power supply can be reduced by increasing the switching frequency. The maximum switching frequency and the maximum conversion ratio are limited by the duty cycle of a PWM signal. In DCDC converters, a sawtooth generat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9e0dd3849464184223cf05c405504b2
https://doi.org/10.1109/prime.2015.7251089
https://doi.org/10.1109/prime.2015.7251089