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For coverage of all the key business and technology developments in compound semiconductors and advanced silicon materials and devices over the last month...

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Designing actual schematics for the device took a while. It appears to require 56 distinct components and 101 in total (see repository - condevtion/i2c-pps-hw). Which is actually a huge project for me. A lot of useful information was there in the controller’s datasheet (obviously). But it isn’t really possible to get the design right without complimentary schematic checklist which can be found in the FAQ page. And some insides can be peeked from the evaluation board user guide. Still there are some mysteries to figure out in practice. The first picture shows the controller and power stage block. Besides what name implies it shows components which should be placed near to the controller. The evaluation board guide mentions snubber networks for MOSFETs. For now they remain DNP as their values can be figured out only for particular PCB impedance which only can be obtained from measuring actual ringing. Also I left zero resisters here in case dv/dt requires adjustments (if the whole thing works, at the end of the day). The second picture shows input and output filters and sensors. As I limited myself to 4-6V input and 5A max current (comparing to 20A the controller capability) I also relaxed requirements for the components here accordingly (while indeed 5A is still a hell of ambitions). In the other hand it’s probably better to have generally the same input and output components (obviously most capable) to have less number of distinct components to order. The next picture contains the master switch itself, and a protection circuit. The protection includes a resectable fuse, a TVS diode for overvoltage, and a Schottky diode for polarity. I’m looking forward to see how hot the latest gets at max current. The switch itself is a high side P-channel MOSFET controlled by a PNP transistor making a host device (RPI) to hold a pin high making the device in its turn work. If the host dies and drops its pin low the switch should turn off the device. The last one shows the digital I/O and programming circuits. The I/O contains its very own low power regulator to be independent on the host system. I2C lines use solder jumpers to disconnect pull-ups if they are somewhere else (when several I2C devices connected to the bus). I just thought, I’d add several more LEDs to indicate presence of input, output, and other signals and make the thing more RGB. The programming set of resistors just defines all adjustable controller parameters - switching frequency (250kHz), mode (buck-boost), and voltage/current limits. Curiously, the checklist and the evaluation board design show RC filters around IIN and IOUT resistors but don’t mention them or requirements for them anywhere. All set to finalize the BOM with market-available parts and proceed with PCB design. submitted by /u/WeekSpender [link] [comments]

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Про підсумки фінансово-господарської діяльності КПІ ім. Ігоря Сікорського за 2025 рік та деякі завдання на 2026 рік Інформація КП пт, 02/27/2026 - 20:37

submitted by /u/adkio [link] [comments]

18 pair cable from a Toshiba CT scanners got cut... somehow... submitted by /u/antek_g_animations [link] [comments]

Infineon Technologies AG of Munich, Germany has expanded its CoolGaN portfolio with the CoolGaN Drive HB 600V G5 product family. The four new devices – IGI60L1111B1M, IGI60L1414B1M, IGI60L2727B1M, and IGI60L5050B1M – integrate two 600V GaN switches in a half-bridge configuration together with integrated high- and low-side gate drivers and a bootstrap diode, delivering a compact, thermally optimized power stage that further reduces design complexity. By bringing key functions into one optimized package, the family lowers external component count, eases PCB layout challenges typically associated with fast-switching GaN, and helps designers to shorten development cycles while achieving the core advantages of GaN technology: higher switching frequencies, lower switching and conduction losses, and greater power density...

University of California Santa Barbara (UCSB) electrical and computer engineering professor James Buckwalter has been inducted as a senior member of the US National Academy of Inventors (NAI) for his work advancing the high-speed and high-frequency integrated circuit technologies that underpin modern wireless communication systems, citing his “remarkable achievements as an academic inventor and a rising leader in his field”...

📰 Газета "Київський політехнік" № 7-8 за 2026 (.pdf) Інформація КП пт, 02/27/2026 - 15:15

Viasat and Rohde & Schwarz are set to collaborate to boost testing for Narrowband Non-terrestrial Networks (NB-NTN) IoT devices connecting via satellite. By thoroughly validating devices and confirming interoperability with Viasat’s network, the collaboration aims to help ensure uninterrupted connectivity for a wide range of satellite-based Internet of Things (IoT) applications. Visitors to MWC Barcelona 2026 can experience the test plan in action.

The collaboration aims to ensure that chipsets, modules and devices interoperate seamlessly with Viasat’s satellite network and comply with 3GPP Release 17 standards.

Deploying advanced testing methodologies upholds the highest standards of quality, performance and reliability for Viasat’s connectivity services: delivering ubiquitous IoT applications in areas without terrestrial network coverage.

The certification test plan with Viasat entails protocol, performance and RF test scenarios. It is based on the CMX500 one-box signalling tester from Rohde & Schwarz, a versatile solution designed for testing various NTN technologies, including New Radio (NR-NTN) and NB-NTN. In a single instrument, the CMX500 covers R&D through certification and carrier acceptance tests, guaranteeing reliable and repeatable results. It empowers engineers to accelerate development, ensure quality and confidently deploy reliable NTN services, safeguarding that the whole ecosystem can achieve the highest levels of performance.

The post R&S and Viasat collaborate on NB-NTN IoT test plan for connectivity via satellite at MWC Barcelona 2026 appeared first on ELE Times.

Japan-based ROHM Semiconductor has decided to integrate its own development and manufacturing technologies for GaN power devices with the process technology of foundry Taiwan Semiconductor Manufacturing Company Ltd (TSMC), with which ROHM has an ongoing partnership, to establish an end-to-end production system within the ROHM Group. Licensing TSMC GaN technology will strengthen its supply capability to meet growing demand for GaN in applications such as AI servers and electric vehicles, ROHM reckons...

Keysight Technologies, Inc. will demonstrate lab-based validation of new radio non-terrestrial networks (NR-NTN) devices at Mobile World Congress 2026 in collaboration with Samsung Electronics’ System LSI Business. The demo will showcase testing capabilities aligned with planned Low Earth Orbit (LEO) satellite deployments, including Starlink Direct to Cell.

As satellite connectivity becomes integral to 5G evolution and future 6G networks, chipset and device vendors must validate NR-NTN performance well in advance of large-scale deployment. Satellite systems in LEO introduce new challenges, including rapid motion, frequent handovers, dynamic link conditions, and stringent positioning requirements. Without access to live satellite networks during early development, organisations need accurate laboratory-based methods to assess mobility, service continuity, and throughput performance under realistic operating conditions in a laboratory.

Keysight’s NTN Network Emulator Solutions recreate LEO satellite characteristics in a controlled laboratory environment. The MWC demonstration integrates Keysight’s 5G Network Emulator with a Samsung NR-NTN modem to validate satellite and device mobility, service continuity, and higher-throughput Multiple-Input, Multiple-Output (MIMO) configurations under parameters aligned with Starlink deployment scenarios.

The demonstration also showcases Keysight’s positioning emulation capabilities, enhanced through its recent Spirent acquisition. PNT Xe enables accurate global navigation satellite system-based positioning as part of an end-to-end validation workflow.

Jungwon Lee, Executive Vice President of System LSI Modem Development Team at Samsung Electronics, said: “NR-NTN introduces new technical challenges for modem design, particularly around mobility, handover, and link adaptation in LEO environments. This demonstration with Keysight allows us to validate NR-NTN modem performance under representative satellite conditions, helping ensure readiness for future satellite-based 5G services.”

Peng Cao, Vice President and General Manager, Keysight’s Wireless Test Group, said: “Direct-to-device satellite connectivity is moving from concept to deployment, making early end-to-end NR-NTN validation essential. Our lab-based, live-application testing gives the ecosystem a repeatable way to prove interoperability and performance, cutting risk and time-to-market while keeping users connected beyond terrestrial coverage.”

The post Keysight to Demonstrate NR-NTN devices Mobility Testing at MWC 2026 in Collaboration with Samsung appeared first on ELE Times.

submitted by /u/TheCorruptedEngineer [link] [comments]

Was at the Super Bowl (a bit drunk ngl) and the hole for the RF control was to the left of the actual LEDs, I can’t stop wondering if I could turn it back on if I had the right equipment. The LEDs also looked a bit strange, not like the normal ones I see. submitted by /u/scoobertsonville [link] [comments]