A. Nakajima, M. H. Dhyani, E. Narayanan, Y. Sumida, H. Kawai
{"title":"GaN based Super HFETs over 700V using the polarization junction concept","authors":"A. Nakajima, M. H. Dhyani, E. Narayanan, Y. Sumida, H. Kawai","doi":"10.1109/ISPSD.2011.5890845","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890845","url":null,"abstract":"GaN Super Heterojunction Field Effect Transistors (Super HFETs) based on the polarization junction (PJ) concept are demonstrated on Sapphire substrates. These Super HFETs were fabricated from a GaN/Al<inf>0.23</inf>Ga<inf>0.77</inf>N/GaN hetero structure with 2D hole and electron gas densities of 1.1×10<sup>13</sup> and 9.7×10<sup>12</sup> cm<sup>−2</sup> at the respective hetero-interfaces. The Super HFETs show breakdown voltage above 700 V with on-resistances of 15 Ω·mm. In addition, the super HFETs have inherent body diodes and its reverse conducting characteristics are demonstrated.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125399947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Improvement of switching trade-off characteristics between noise and loss in high voltage MOSFETs","authors":"W. Saito, S. Aida, S. Koduki, M. Izumisawa","doi":"10.1109/ISPSD.2011.5890854","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890854","url":null,"abstract":"A new MOS-gate structure was proposed and demonstrated to improve the switching trade-off characteristics between noise and loss in high-voltage MOSFETs. The lightly p-doped dummy base layer under the gate electrode modulates Cgd-Vds curve due to the depletion under high applied voltage and the turn-off dV/dt can be suppressed even with high-speed switching. The fabricated device showed the surge voltage suppression of 50 V or the turn-off loss reduction of 20% in the turn-off switching test with an inductive load. In the flyback converter operation, it was also shown that the trade-off characteristics between the radiation noise and total power loss were improved by the proposed dummy base structure.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127562743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Timothe, R. Nicolas, Crebier Jean-Christophe, Gaude Victor, Irène Pheng
{"title":"A novel power system in package with 3D chip on chip interconnections of the power transistor and its gate driver","authors":"S. Timothe, R. Nicolas, Crebier Jean-Christophe, Gaude Victor, Irène Pheng","doi":"10.1109/ISPSD.2011.5890857","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890857","url":null,"abstract":"Currently, most industrial power modules, even IPEMs (Intelligent Power Electronics Modules), are interconnected in a planar way, and interconnections are made with bonding wires. This paper presents a three dimensional interconnection solution based on the idea to flip chip the gate driver directly on the surface of the power device, simplifying and optimizing the packaging and the interconnections among the two devices and improving the overall performances. Various approaches and interconnection solutions will be presented in this paper, and the advantages of the chosen approach will be discussed. Then the technological process for the realization of the interconnections will be explained, and practical realizations will be shown.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133005054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Ikeda, Y. Iizuka, Y. Hinata, M. Horio, M. Hori, Yoshikazu Takahashi
{"title":"Investigation on wirebond-less power module structure with high-density packaging and high reliability","authors":"Y. Ikeda, Y. Iizuka, Y. Hinata, M. Horio, M. Hori, Yoshikazu Takahashi","doi":"10.1109/ISPSD.2011.5890843","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890843","url":null,"abstract":"A newly developed module with wirebond-less structure is investigated. This structure has multi-pin attached interconnection structure implanted into power circuit board with connecting line between chips and other elements inside the power module. Additionally, heat-spreader-like copper blocks bonded to ceramic insulated substrates performing high thermal conductivity, enable to realize high current capability operations effectively. Moreover, full molded resin package performs higher reliability comparing with the conventional module, shows the package structure is one of the potential candidates of power module for the high power applications including Wide Band Gap (WBG) devices.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133048698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yong-Keon Choi, I. Park, H. Lim, Mi-Young Kim, Chul-Jin Yoon, Nam-Joo Kim, K. Yoo, L. Hutter
{"title":"A versatile 30V analog CMOS process in a 0.18μm technology for power management application","authors":"Yong-Keon Choi, I. Park, H. Lim, Mi-Young Kim, Chul-Jin Yoon, Nam-Joo Kim, K. Yoo, L. Hutter","doi":"10.1109/ISPSD.2011.5890830","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890830","url":null,"abstract":"A versatile 30V analog CMOS process in a 0.18 μm technology node has been developed by using cost-effective and modular fashion. To reduce the thermal budget deep NWELL isolation is formed after CMOS well formation. The drain-extended (DE) CMOS from 7V to 30V shows very competitive trade-off performance between the breakdown voltage and the specific on-resistance. In addition, low 1/f noise of 5V CMOS can be obtained by pure gate oxide process.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129333527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexander Henlser, D. Wingert, C. Herold, J. Lutz, M. Thoben
{"title":"Thermal impedance spectroscopy of power modules during power cycling","authors":"Alexander Henlser, D. Wingert, C. Herold, J. Lutz, M. Thoben","doi":"10.1109/ISPSD.2011.5890841","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890841","url":null,"abstract":"The presented thermal impedance spectroscopy of power modules simplifies significantly the failure analysis of power modules. It enables online observation of degradation within the cooling path with detailed information about failure mechanisms. The degradation of certain layer within the power module is detected by observation of Zth parameters. Several tests results are compared with analysis of the scanning acoustic microscope.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116108549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Yedinak, R. Stokes, D. Probst, S. Kim, A. Challa, S. Sapp
{"title":"Avalanche instability in oxide charge balanced power MOSFETs","authors":"J. Yedinak, R. Stokes, D. Probst, S. Kim, A. Challa, S. Sapp","doi":"10.1109/ISPSD.2011.5890814","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890814","url":null,"abstract":"Power MOSFET designs have been moving to higher performance particularly in the medium voltage area. (60V to 300V) New designs require lower specific on-resistance (RSP) thus forcing designers to push the envelope of increasing the electric field stress on the shielding oxide, reducing the cell pitch, and increasing the epitaxial (epi) drift doping to reduce on resistance. In doing so, time dependant avalanche instabilities have become a concern for oxide charge balanced power MOSFETs. Avalanche instabilities can initiate in the active cell and/or the termination structures. These instabilities cause the avalanche breakdown to increase and/or decrease with increasing time in avalanche. They become a reliability risk when the drain to source breakdown voltage (BVdss) degrades below the operating voltage of the application circuit. This paper will explain a mechanism for these avalanche instabilities and propose an optimum design for the charge balance region. TCAD simulation was employed to give insight to the mechanism. Finally, measured data will be presented to substantiate the theory.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116301715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Opportunities and challenges with net zero energy buildings","authors":"Satyen Mukherjee","doi":"10.1109/ISPSD.2011.5890776","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890776","url":null,"abstract":"Buildings represent around 41% of the total energy consumption in the US followed closely by industry (31%) and transportation (28%). One of the milestones set by the US Department of Energy is the development and deployment of net zero energy buildings defined as buildings that on a yearly average spend as much energy as they generate using renewable energy sources. Realization of net zero energy buildings require a wide ranges of technologies, systems and solutions with varying degrees of complexity and sophistication depending upon the location and surrounding environmental conditions. Lighting is a dominant load in buildings followed by heating, cooling, ventilation and various plug loads. This paper will address the roles of different technologies, devices and control strategies being developed for low energy buildings leading to net zero energy buildings. These include high efficiency lighting, daylight integration, DC power bus, solar power integration; closed loop integrated control, smart grid interface as well as emerging approaches such as chilled beams and active facades. All of these involve power conversion and controls in one form or the other where high voltage or high power integrated solutions are key to commercial viability. In addition to this, the role of whole building modeling and simulation in the development and deployment of the solutions will be addressed.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128073502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Li Yuan, Hongwei Chen, Qi Zhou, Chunhua Zhou, K. J. Chen
{"title":"A novel normally-off GaN power tunnel junction FET","authors":"Li Yuan, Hongwei Chen, Qi Zhou, Chunhua Zhou, K. J. Chen","doi":"10.1109/ISPSD.2011.5890844","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890844","url":null,"abstract":"We demonstrate AlGaN/GaN tunnel junction FETs (TJ-FET) featuring a metal-2DEG Schottky junction at the source. The TJ-FETs exhibit normally-off operation in an otherwise normally-on as-grown sample owing to a current controlling scheme different from the conventional FETs. The high 2DEG density in AlGaN/GaN heterostructure results in a thin tunnel barrier whose effective thickness is controlled by an overlaying gate electrode. A positive gate bias results in a nanometer-thick barrier with high tunneling current, while a zero gate bias leads to a thicker barrier that effectively blocks the current flow. High drive current (326 mA/mm), low off-state leakage current (10−8 mA/mm) and high ION/IOFF ratio (1010) at a drain voltage of 50 V, and high off-state breakdown voltage (557 V) are obtained on a standard GaN-on-Si platform featuring a 1.8 μm buffer.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"266 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124317996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Yoo, Jong-Min Kim, J. Byeon, Young-Sang Son, Jae-Young Park, W. Jung
{"title":"P-type isolated GGNMOS with a deep current path for ESD protection","authors":"J. Yoo, Jong-Min Kim, J. Byeon, Young-Sang Son, Jae-Young Park, W. Jung","doi":"10.1109/ISPSD.2011.5890870","DOIUrl":"https://doi.org/10.1109/ISPSD.2011.5890870","url":null,"abstract":"In this paper, we propose a P-type Isolated GGNMOS (PI-GGNMOS) with a deep current path to improve holding voltage (Vh) of Electro-Static Discharge (ESD) protection device. In order to make the deep current path under the channel, the proposed ESD protection device has a p-type stud between source and the channel, compared to the conventional GGNMOS (Gate-Grounded NMOS). To verify the performance of the proposed structure, we simulated and measured the test structure that is fabricated in a 0.35μm Bipolar-CMOS-DMOS (BCD) process. We found that the proposed structure improves the holding voltage from 6.4V to 8.48V for 5V GGNMOS at 5.3μm pitch. In case of conventional 7V GGNMOS at 7.0μm pitch, the holding voltage is 8.7V. Therefore, we can use 5V PI-GGNMOS as a 7V ESD protection device with 32 % pitch reduction compared to conventional 7V ESD device without any additional process. The actual size of ESD cell is saved by 42.3%, considering It2. This improvement is attributed to the p-type stud which reduces gain and extends effective base width of parasitic NPN in GGNMOS. Consequently, the PI-GGNMOS can apply for upper range ESD protection at same cost.","PeriodicalId":132504,"journal":{"name":"2011 IEEE 23rd International Symposium on Power Semiconductor Devices and ICs","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131795022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}