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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.
Author: | Dominik KochORCiD, Ankit Bhushan Sharma, Julian WeimerORCiD, Mathias Weiser, Till HuesgenORCiD, Ingmar KallfassORCiDGND |
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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 |