| 1. |
- Akbari, Saeed, et al.
(författare)
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Low Inductive SiC Power Electronics Module with Flexible PCB Interconnections and 3D Printed Casing
- 2022
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Ingår i: 2022 IMAPS Nordic Conference on Microelectronics Packaging, NordPac 2022. - : Institute of Electrical and Electronics Engineers Inc.. - 9789189711396
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Konferensbidrag (refereegranskat)abstract
- Silicon carbide (SiC) power devices are steadily increasing their market share in various power electronics applications. However, they require low-inductive packaging in order to realize their full potential. In this research, low-inductive layouts for half-bridge power modules, using a direct bonded copper (DBC) substrate, that are suitable for SiC power devices, were designed and tested. To reduce the negative effects of the switching transients on the gate voltage, flexible printed circuit boards (PCBs) were used to interconnect the gate and source pins of the module with the corresponding pads of the power chips. In addition, conductive springs were used as low inductive, solder-free contacts for the module power terminals. The module casing and lid were produced using additive manufacturing, also known as 3D printing, to create a compact design. It is shown that the inductance of this module is significantly lower than the commercially available modules.
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| 2. |
- Maslik, Jan, et al.
(författare)
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Soft, Stretchable and Wireless Sensor Patch with Digitally Printed Liquid Metal Alloy Interconnects
- 2022
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Ingår i: 2022 IMAPS Nordic Conference on Microelectronics Packaging (NordPac). - : Institute of Electrical and Electronics Engineers (IEEE). - 9789189711396 - 9781665491778
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Konferensbidrag (refereegranskat)abstract
- Characteristics of high electrical conductivity, high strain tolerance and resistance to fatigue are vital for electronic circuits of on-skin wearable systems. Gallium-based liquid metals offer a unique combination of these characteristics making them excellent alternatives to conventional conductive stretchable inks. In order to obtain better wearing experience, it is advantageous to fabricate devices using breathable materials. However, effective automation solutions for the production of high-resolution digitally patterned circuits for soft and stretchable devices remain a challenge. The presented manufacturing strategy involves adopting a needle dispensing technique for the precise patterning of liquid metal conductors. The circuitry is deposited onto a soft, thin and highly breathable polyurethane medical film. Further, we investigate and map conditions of reliable printing of liquid metal on the polyurethane film for two sizes of dispensing needles with inner diameters of 150 μm and 360 μm. Despite the increased porosity and surface roughness associated with the high breathability of the film, it is possible to reliably deposit liquid metal interconnects with a line width and height below 100 μm. The technological solution results in a first demonstrator presented: an electrophysiological patch.
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