Boxue Hu, Xuan Zhang, Lixing Fu, He Li, Chengcheng Yao, Yafeng Wang, Yousef Abdullah, Jin Wang
{"title":"Comparison study of LLC resonant circuit and two quasi dual active bridge circuits","authors":"Boxue Hu, Xuan Zhang, Lixing Fu, He Li, Chengcheng Yao, Yafeng Wang, Yousef Abdullah, Jin Wang","doi":"10.1109/WIPDA.2016.7799906","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799906","url":null,"abstract":"This paper presents a comparison study of three isolated DC/DC circuit topologies, LLC resonant circuit, phase shift bridge circuit and phase shift quasi switched capacitor (QSC) circuit. The device stress of three circuits is compared using total switching device power (SDP) which can be used as an indicator of circuit efficiency, device cooling requirement, device packaging requirement and cost of the power electronics converter. Transformer is the main passive component in the circuit that affects significantly the converter power density. The transformer area products (AP) of three circuits are thus calculated and compared. Device loss oriented circuit design is carried out on the three circuit topologies for 1 kW, 400 V to 48 V telecomm power supply application using commercially available GaN devices. Basing on the circuit design results, the device loss of three circuits is calculated and compared at various switching frequencies and load conditions. In the end, a 1 kW, 0.5 MHz, 400–48 V GaN device based phase shift QSC converter prototype is built and tested to verify the analysis and showcase the circuit performance.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124971575","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}
C. Dimarino, Wenli Zhang, Nidhi Haryani, Qiong Wang, R. Burgos, D. Boroyevich
{"title":"A high-density, high-efficiency 1.2 kV SiC MOSFET module and gate drive circuit","authors":"C. Dimarino, Wenli Zhang, Nidhi Haryani, Qiong Wang, R. Burgos, D. Boroyevich","doi":"10.1109/WIPDA.2016.7799908","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799908","url":null,"abstract":"This paper presents the design, fabrication and testing of a 1.2 kV, 90 A SiC MOSFET half-bridge module in synchronous configuration. The module has low gate- and power-loop parasitic inductances, and has more than twice the power density (127.8 W/in3), and less than half of the switching loss (1.3 mJ), as similarly-rated commercial half-bridge modules, while employing standard, cost-effective packaging materials and technologies. The design of a high-speed gate drive will also be presented. The gate drive includes an active Miller clamp, which suppresses the cross-talk between the MOSFETs in the half-bridge. The measured module efficiency is 99 % when operating in a dc-dc synchronous boost converter.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122390288","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":"650V and 900V, 150A SiC Schottky diode for automotive applications","authors":"K. Chatty, Sujit Banerjee, K. Matocha","doi":"10.1109/WIPDA.2016.7799926","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799926","url":null,"abstract":"650V and 900V, 150A SiC Schottky diodes have been manufactured on 150mm SiC wafers using a high yielding Schottky diode process developed in an automotive qualified Si foundry. The 900V diodes have a forward voltage drop of 1.65V at 150A, a breakdown voltage of 1100V at 250uA and leakage current of 600nA at 900V. A 30% reduction in yield is observed with die size increase from 12A to 150A diode due to the impact of defects on leakage current and breakdown voltage. A reduction in substrate thickness will be key to accelerate the commercial readiness of the 650V and 900V high current diodes due to the die size reduction, yield improvement and cost reduction it enables.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132218850","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}
Kazuki Oishi, Michihiro Shintani, Masayuki Hiromoto, Takashi Sato
{"title":"Identifications of thermal equivalent circuit for power MOSFETs through in-situ channel temperature estimation","authors":"Kazuki Oishi, Michihiro Shintani, Masayuki Hiromoto, Takashi Sato","doi":"10.1109/WIPDA.2016.7799958","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799958","url":null,"abstract":"We propose a novel methodology for identifying thermal equivalent circuit of power MOSFETs through the measurement of thermal conduction characteristics. Drain current of the MOSFET is utilized to estimate channel temperature wherein heat is actually generated. Two measurement methods, i.e., constant voltage (CV) method and constant power (CP) method, are proposed. Those methods are different in the waveforms of input power for the target device. In experiments using a commercial SiC power MOSFET, good agreement is observed between impulse responses obtained from the two measurement methods.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124823074","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}
Achim Endruschat, T. Heckel, R. Reiner, P. Waltereit, R. Quay, O. Ambacher, M. Mârz, B. Eckardt, L. Frey
{"title":"Slew rate control of a 600 V 55 mΩ GaN cascode","authors":"Achim Endruschat, T. Heckel, R. Reiner, P. Waltereit, R. Quay, O. Ambacher, M. Mârz, B. Eckardt, L. Frey","doi":"10.1109/WIPDA.2016.7799963","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799963","url":null,"abstract":"This paper presents a 600 V, 55 mS GaN cascode with slew rate control. The time constants of cascodes which determine the switching speed are analyzed, discussed and verified by time domain simulations. Clamped inductive switching measurements of commercial and a custom-built GaN cascodes prove the applicability of the switching speed control mechanisms with additional passive components. The gathered experiences are applied to a custom-built modular cascode, which shows simple switching speed controllability by utilizing a standard gate drive.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"415 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122851057","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":"Comparative study of temperature sensitive electrical parameters (TSEP) of Si, SiC and GaN power devices","authors":"Liqi Zhang, Pengkun Liu, Suxuan Guo, A. Huang","doi":"10.1109/WIPDA.2016.7799957","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799957","url":null,"abstract":"For high power applications, power modules provide a higher power density than using discrete power devices due to improved thermal performance as well as compact form factor. Since all semiconductor failure and degradation is related to the temperature rise in semiconductor devices, accurate temperature monitoring is necessary and are considered necessary in future generations of wide bandgap power modules. In this paper, a comparative temperature sensitive electrical parameter study is conducted for Si, SiC and GaN power devices. The results can be used in choosing the most sensitive electrical parameter for online junction temperature sensing.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125921140","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. Madhusoodhanan, S. Koukourinkova, T. White, Zhong Chen, Yue Zhao, M. Ware
{"title":"Highly linear temperature sensor using GaN-on-SiC heterojunction diode for Harsh environment applications","authors":"S. Madhusoodhanan, S. Koukourinkova, T. White, Zhong Chen, Yue Zhao, M. Ware","doi":"10.1109/WIPDA.2016.7799932","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799932","url":null,"abstract":"In this work, high temperature diode sensors for harsh environment applications are fabricated and comprehensively characterized. The design of the sensors is based on gallium nitride (GaN) on silicon carbide (SiC) heterojunction structures. The GaN layer was grown by the molecular beam epitaxy (MBE) on an n-type SiC substrate. P-type doping of the GaN was achieved using the atomic magnesium (Mg) as a dopant. The heterojunction devices were fabricated using a concentric ring geometry with the diameters ranging from 400 μm to 1000 μm. Temperature dependent characteristics (Vf — T) of these heterojunction devices as well as their sensitivity (mV/K) are comprehensively characterized in a temperature range from 300 K to 650 K using reduced temperature steps. High temperature electrical measurements have demonstrated that these heterojunction devices have highly linear temperature dependent characteristics and are potentially usable as reliable temperature sensors up to at least 650K. Dedicated programs were used to extract the electrical parameters of the devices designed to operate as a temperature sensor.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134010566","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}
Ke Zhu, M. O'Grady, J. Dodge, J. Bendel, J. Hostetler
{"title":"1.5 kW single phase CCM totem-pole PFC using 650V SiC cascodes","authors":"Ke Zhu, M. O'Grady, J. Dodge, J. Bendel, J. Hostetler","doi":"10.1109/WIPDA.2016.7799915","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799915","url":null,"abstract":"This paper presents benefits of using 650 V SiC cascodes to realize a 1.5 kW single phase, continuous conduction mode (CCM) totem-pole, bridgeless power factor correction (PFC) AC/DC converter switching at 100 kHz. By exploiting the excellent switching and conduction performance of SiC cascodes, the compatibility with a 12 V gate drive and synchronous rectification of the full-bridge, a very high peak efficiency of 98.6% is achieved for this AC/DC converter at high line (230 V) AC input with 400 V DC output. With correct digital control of the full-bridge gate signals the inductor current spike at zero-crossing is significantly reduced and a total harmonic distortion (THD) of 1.83% is achieved at high line near full load.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116643736","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":"1200V/200A FREEDM-pair: Loss and cost reduction analysis","authors":"Xiaoqing Song, A. Huang, Pengkun Liu, Liqi Zhang","doi":"10.1109/WIPDA.2016.7799928","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799928","url":null,"abstract":"FREEDM-Pair is an innovative power semiconductor switch which reduces the loss and cost through the hybrid integration of a Si IGBT and a SiC MOSFET. During the turn-off of the FREEDM-Pair, the Si IGBT is turned off first under ZVS condition and after a carefully selected delay time, the Si MOSFET is turn-off. In this way, the IGBT's turn-off loss is significantly reduced due to the ZVS turn-off condition. During the delay time, the current will be carried by the MOSFET only. During the turn-on, the SiC MOSFET and the IGBT can be turned on at the same time. Due to faster turn-on speed of the MOSFET, the IGBT is also turned on under the ZVS condition. Another advantage of the FREEDM-Pair is the better conduction characteristics compared to the Si IGBT by combining both the unipolar and bipolar devices' advantages in current conduction. Therefore the FREEDM-Pair provides an ideal option to realize the tradeoff between the cost and performance, and can be applied to main stream applications which currently use IGBT. Previously, the 6.5-kV FREEDM-Pairs results have been published and analyzed. In this paper, loss and cost reduction of a 1200V/200A FREEDM-Pair is presented and analyzed for the first time.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132052920","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}
D. Johannesson, M. Nawaz, Keijo Jacobs, S. Norrga, H. Nee
{"title":"Potential of ultra-high voltage silicon carbide semiconductor devices","authors":"D. Johannesson, M. Nawaz, Keijo Jacobs, S. Norrga, H. Nee","doi":"10.1109/WIPDA.2016.7799948","DOIUrl":"https://doi.org/10.1109/WIPDA.2016.7799948","url":null,"abstract":"In this paper, the theoretical performance of ultra-high voltage Silicon Carbide (SiC) based devices are investigated. The SiC semiconductor device conduction power loss and switching power loss are predicted and compared with different modeling approaches, for SiC metal-oxide semiconductor field-effect transistors (MOSFETs) up to 20 kV and SiC gate turn-off (GTO) thyristors and SiC insulated-gate bipolar transistors (IGBTs) up to 50 kV. A parameter sensitivity analysis has been performed to observe the device power loss under various operating conditions, for instance current density, temperature and charge carrier lifetime. Also, the maximum allowed current density and maximum switching frequency for a maximum chip power dissipation limit of 300 W/cm2 are investigated. The simulation results indicate that the SiC MOSFET has the highest current capability up to approximately 15 kV, while the SiC IGBT is suitable in the range of 15 kV to 35 kV, and thereafter the SiC GTO thyristor supersedes the loss performance from 35 kV to 50 kV.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128986072","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}