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A 48 V, 300 kHz, High Current DC/DC-Converter Based on Paralleled, Asymmetrical & Thermally Optimized PCB Embedded GaN Packages with Integrated Temperature Sensor

  • To make the full performance of the intrinsic 100 V, 5 mΩ gallium nitride transistors available on system level, in this work an asymmetrical & thermally optimized PCB embedded single chip package with integrated resistance thermometer, high temperature capability and a thermal resistance Rth,j−hs of 3.3 K W−1 is characterized in a 48 V to 24 V 300 kHz mild-hybrid DC/DC operation with two paralleled chips in each low- (LS) and high-side (HS). The transistors are mounted on a 4-layer multilayer PCB with 1 mm copper inlays to achieve a high current capability, while allowing narrow logic traces on the same PCB. The designed converter is achieving a light load efficiency of ≥99 % and an efficiency of 97 % at 60 A output current and ≈1.3 kW output power in a 48 V to 24 V 300 kHz buck-converter operation. The on-board temperature readout circuit and the phase output current sensor offer the possibility to extend the GaN transistors to an intelligent power module by the compact and simple sensors.

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Metadaten
Author:Dominik KochORCiD, Ankit Bhushan Sharma, Julian WeimerORCiD, Mathias Weiser, Till HuesgenORCiD, Ingmar KallfassORCiDGND
DOI:https://doi.org/10.23919/ISPSD50666.2021.9452241
Identifier:978-4-88686-422-2 OPAC HS OPAC extern
Parent Title (English):2021 33rd International Symposium on Power Semiconductor Devices and ICs (ISPSD), 30 May-3 June 2021, Nagoya, Japan
Publisher:IEEE
Document Type:conference proceeding (article)
Conference:The 33rd International Symposium on Power Semiconductor Devices and ICs (ISPSD), 2021, Online
Language:English
Date of Publication (online):2021/06/15
Year of first Publication:2021
Tag:DrGaN
Number of pages:4 Seiten
First Page:383
Last Page:386
Institutes:Fakultät Elektrotechnik
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften
Research focus:FSP1: Energie
FSP3: Produktion
Publication Lists:Huesgen, Till
Sharma, Ankit Bhushan
Publication reviewed:begutachtet
Release Date:2021/10/22
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