VolfPack Energy: Mini Supercapacitor Cells for Compact Applications

Merits of GaN HEMT: Enabling Fully Integrated Gate Drivers One of the highly impactful advantages f GaN is the ability to pull traditionally external components on-chip. In conventional silicon-based designs, the bootstrap capacitor (CBOOT) found in the schematic below is almost always placed off-chip. This is because the required capacitance and drive energy to make it on-chip is impractical. GaN HEMT solves that. With low gate charge (Qg) and reduced capacitances, the required gate-drive energy is significantly smaller. This directly reduces the required bootstrap capacitance, making on-chip integration of CBOOT feasible. This seemingly small shift has major system-level implications: Fewer external components → simplified BOM Reduced parasitic inductance and resistance → cleaner switching Shorter current loops → improved efficiency and EMI performance More compact, single-package power stages This is not just incremental integration — it is a shift toward fully integrated power stages enabled by GaN. This capability is the central focus of my lecture series on GaN Gate Driver Design — where the goal is not just understanding devices, but enabling fully integrated, high-performance implementations. I’ve recently launched the GaN Gate Driver Course, built from years of research, extensive paper reviews, and real silicon tapeouts. This is not just another course — it is a shortcut to design-level knowledge that many R&D teams spend months or even years uncovering. Inside the course, you’ll explore: • How GaN FETs are shaping the future of PMICs for EVs and renewable energy systems • Core design principles for high-performance, high-frequency power management circuits • Distilled insights from top-tier papers and practical lessons from real gate driver tapeouts For many engineers, it can mean the difference between months of trial-and-error and making confident, integration-ready design decisions. 🎥 Free introductory lecture: https://lnkd.in/gfJxtmAC If this topic aligns with your work, comment “GaN PMIC” and I’ll follow up. #GaNHEMT #PMIC #GateDriver #PowerElectronics #ICDesign #Semiconductors #ElectricVehicle #RenewableEnergy

In the era of high frequency and high current, magnetic components have become the "efficiency hubs" of system performance. As Wide Bandgap semiconductors like SiC and GaN become mainstream, rising switching frequencies present severe thermal management challenges for traditional round-wire inductors. The Magsonder engineering team has reconstructed the underlying technology to bring a brand-new solution to the industry: ✅ Core Innovation: Utilizing customized, large-cross-section Flat Enameled Copper Wire to eliminate the skin effect at its physical source and drastically reduce high-frequency losses. ✅ Extreme Reliability: Precision-gapped core architectures combined with high-strength metal bands ensure structural integrity even under extreme vibration and high-power surges. ✅ Application Empowerment: Perfectly adapted for 800V EV On-Board Chargers (OBC) and megawatt-scale solar inverters, helping systems achieve a qualitative leap in power density.  #inductor #industrialelectronics #powerelectronics

🏢Sputtering system Cluster Sputter  Cluster sputtering is a highly flexible R&D and pilot system that configures multiple processes in a single vacuum environment. 📌 Applications ✔️Applicable to various thin film (metal, oxides, TCO) processes ✔️Applicable to highly integrated semiconductor and electronic component substrate processes ✔️Applicable to thin-film solar cell manufacturing processes 👉 Learn more: https://lnkd.in/gm5cRYfh #Selcos #OELD #Sputtering #semiconduct #nano #nanotechnology  #MetallicCoating #Panel #LED #PMC #SFC

𝗘𝗻𝗵𝗮𝗻𝗰𝗶𝗻𝗴 𝗚𝗮𝗡 𝗽𝗼𝘄𝗲𝗿 𝗱𝗲𝘃𝗶𝗰𝗲 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗮𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗲𝘁𝗰𝗵𝗶𝗻𝗴 𝗰𝗼𝗻𝘁𝗿𝗼𝗹 🚀 I’m excited to share the highlights of our recent research on AlGaN/GaN HEMTs, focusing on one of the most critical challenges in power electronics: achieving ultra-low contact resistance.  In our latest study at STMicroelectronics, we explored innovative strategies to master the AlGaN barrier recessing process. By implementing a novel pulsed-bias dry etching technique and an optimized oxygen-rich cleaning process, we’ve unlocked significant improvements in device efficiency.  Together with my colleague (and friend) Selene Colombo, we obtained record-breaking results! The combination of these advanced processes led to a 70% reduction in contact resistance and a 23% improvement in overall ON-resistance.  These findings provide a clear pathway for enhancing the performance of GaN-based power devices, making them even more competitive for high-voltage and high-frequency applications.  Check out the full paper here: https://lnkd.in/dzUCsWSz #GaN #PowerElectronics #Semiconductors #Innovation #HEMT #Technology

🔋 Deep Dive: EV Power Battery Architecture & SWCNT Technical Value ⚙️ The mainstream technical routes for current automotive power batteries are dominated by LFP, NMC ternary, LMFP, sodium-ion, and semi-solid state 🚘. Fundamentally, automotive power batteries differ drastically from traditional consumer 3C batteries 📱: • EV cells require ultra-long cycle life, high-rate discharge capability, wider extreme temperature tolerance, and higher thermal runaway safety margin; • 3C batteries prioritize energy density and lightweight design, with much lower requirements on cycle stability, high-current output and vehicle-grade environmental reliability. This is where SWCNT (Single-Walled Carbon Nanotubes) becomes an irreplaceable advanced conductive additive in the battery industry ✨. It builds an efficient 3D conductive network at ultra-low dosage, effectively improves electron conduction efficiency, supports high-fast-charging performance, alleviates silicon anode volume expansion, enhances low-temperature discharge performance, and significantly elevates overall cycle life and consistency of power cells. For battery R&D, material and new energy engineers — always open to technical exchanges and industry collaboration 🤝. www.hex-nano.com 📭：jayz@hex-nano.com #EVBattery #LFP #NMC #LMFP #SodiumIon #SWCNT #CarbonNanotube #BatteryMaterials #PowerBattery #NewEnergyTech #SiliconAnode #FastChargingBattery

🔌 Energy Bands & Bandgap : Why do some materials conduct electricity while others don’t? 🤔 The answer lies in energy bands and the bandgap. 👉 In any solid material, electrons exist in specific energy ranges called bands: ⚡ Valence Band (VB): Electrons are tightly bound to atoms ⚡ Conduction Band (CB): Electrons are free to move → current flows 🚫 Bandgap (Eg): The gap between VB and CB Electrons must cross this gap to conduct electricity 💡 Based on bandgap, materials behave differently: 🔹 Conductors (Copper, Aluminum) No gap → easy flow of electrons 🔹 Semiconductors (Silicon ~1.1 eV) Small gap → controlled conductivity (used in electronics) 🔹 Insulators (Glass, Diamond) Large gap → no current flow ✨ Types of Bandgaps: 🔸 Direct Bandgap: Efficient light emission → used in LEDs 🔸 Indirect Bandgap: Less efficient → example: Silicon 🚀 Why it matters: • Basis of transistors, diodes & chips • Essential for solar panels • Makes LEDs glow Bandgap decides whether electricity flows or not. #Engineering #Electronics #Semiconductors #ElectricalEngineering #TechBasics #Learning

Precision current sensing for high-power applications just got more versatile. The Bourns SSA-2 Series Analog Current Sensor now offers an AEC-Q200 compliant components assembly option, making it an even stronger fit for demanding applications like EV charging stations, renewable energy systems, and industrial motor drives. With no calibration required, immunity to stray magnetic fields, and greater stability than Hall Effect technology, this series was already raising the bar. Now it goes even further. Want to know what sets it apart? Learn more: https://bourns.co/42BwOoC #Bourns #CurrentSensing #EV #RenewableEnergy #Electronics #Engineering

The discovery that changed surge protection forever... Dr. Michio Matsuoka & the shift from SiC to zinc oxide varistors In the history of surge protection, few breakthroughs have been as transformative as the invention of the Zinc Oxide (ZnO) varistor by Dr. Michio Matsuoka in 1967. In the mid-1960s, the expansion of semiconductor technology created a problem: silicon carbide (SiC) varistors could no longer protect low-voltage devices reliably. At just 29 years old, Matsuoka—then a young physicist at Matsushita—was tasked with finding a new path forward. What followed was a milestone in electrical engineering. 1967 – The Breakthrough During a routine experiment, an overheated ZnO ceramic sample unexpectedly showed extreme non-linear behavior, far beyond what SiC could deliver. This was the discovery of grain-boundary barrier conduction—the foundation of the modern metal-oxide varistor. From this point on, the ZnO varistor era began: - 1968–1971: First commercial ZNR varistors at Matsushita - 1970s: Global adoption, GE licensing, rapid development - Late 1970s: ZnO technology scaled to high voltage - 1976: Introduction of the first gapless HV surge arrester using ZnO blocks - 1980s onward: Complete industry shift from SiC → ZnO Why this mattered for high-voltage applications SiC arresters required series spark gaps due to high leakage. This added complexity, maintenance, and performance limitations. ZnO changed everything: - True gapless operation - Much steeper nonlinearity (α > 30–50) - Fast, repeatable response - Better overall energy handling - Simplified arrester design and improved reliability Today, every modern surge arrester—distribution or transmission—stands on the foundation created by Matsuoka’s discovery. Billions of MOVs protect electronic devices, substations, HV networks, and critical infrastructure worldwide. Dr. Matsuoka’s legacy From his early work at Matsushita to his 2008 induction in the Surge Protection Hall of Fame and national recognition in Japan, his invention remains one of the most influential contributions to insulation coordination and surge protection.

🔋xEV & Battery Engineering Tips : What are the key materials and chemistries for Li-ion Batteries? What are the specs and main figures to keep in mind? 🔋LFP, LCO, NCA, NMC, LTO, MCMB, Si, Li... 🔋If you want to know more about EV, Batteries Performance, modeling and simulation, let us know. DM for access to more analysis and reports. Stay tuned and contact us if you want to share more info to this battery engineering tips series. If you #like this content, #share and comment what you would like to see in next posts. #battery #design #technologies ➡️ Join and subscribe to the newsletter for more content : https://lnkd.in/eVT4uFB5

🔋xEV & Battery Engineering Tips : What are the key materials and chemistries for Li-ion Batteries? What are the specs and main figures to keep in mind? 🔋LFP, LCO, NCA, NMC, LTO, MCMB, Si, Li... 🔋If you want to know more about EV, Batteries Performance, modeling and simulation, let us know. DM for access to more analysis and reports. Stay tuned and contact us if you want to share more info to this battery engineering tips series. If you #like this content, #share and comment what you would like to see in next posts. #battery #design #technologies ➡️ Join and subscribe to the newsletter for more content : https://lnkd.in/eVT4uFB5