Vishay Intertechnology. has been granted a patent for a current sense resistor designed with temperature coefficient of resistance (TCR) compensation. The resistor features a resistive strip between conductive strips, incorporating calibration slots to achieve a negative starting TCR value, enhancing measurement accuracy. GlobalData’s report on Vishay Intertechnology gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Vishay Intertechnology, 3D memory devices was a key innovation area identified from patents. Vishay Intertechnology's grant share as of June 2024 was 60%. Grant share is based on the ratio of number of grants to total number of patents.
Current sense resistor with tcr compensation technology
The granted patent US12009127B2 describes a resistor designed with temperature coefficient of resistance (TCR) compensation. The invention features a resistive element connected to two conductive portions, each equipped with sensing portions and slots. The first conductive portion includes a first slot with two segments that extend in different directions, while the second conductive portion has a second slot with similar characteristics. These slots are strategically positioned to enhance the resistor's performance by allowing for adjustments to the TCR value, which is crucial for maintaining consistent resistance across varying temperatures. The slots are formed within the interior areas of the conductive portions, ensuring they are fully enclosed and contributing to the overall functionality of the resistor.
Further claims detail the specific configurations of the slots, including their shapes—C-shaped or L-shaped—and their orientations relative to the main current paths of the conductive portions. The design allows for the first and second sensing portions to be positioned adjacent to the connecting points of the respective slots, optimizing their effectiveness in TCR compensation. Additionally, the claims highlight the potential for rounded edges in the slots, which may further enhance the resistor's performance. Overall, the patent outlines a sophisticated approach to resistor design that aims to improve temperature stability and reliability in electronic applications.
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