Power electronics must now handle faster switching, harsher environments, and tighter thermal budgets, forcing changes in drivers, protection, measurement, and materials.
Engineers who have chased ringing on a GaN half-bridge or watched a TVS clamp voltage exceed the expected rail during an automotive load dump already understand the practical stakes. The devices now entering the market address these exact pain points rather than promising abstract performance gains. Radiation-hardened gate drivers, flatter-clamping TVS structures, and wideband current shunts all respond to the same underlying pressure: switching edges are shortening while operating conditions grow more severe.
The common thread across this week’s announcements is that thermal, protection, and measurement constraints are no longer secondary considerations. They dictate topology choices, PCB copper allocation, and even the decision to stay with silicon or move to GaN. When a registering clock driver must support 9600 MT/s server memory while a rad-hard driver enables GaN in orbit, the design questions converge on layout parasitics, transient energy handling, and verification of long-term reliability.
This edition examines how those constraints appear in different domains and what concrete design adjustments they require.
The essentials
Rad-hard gate driver supports GaN transition in space systems. The RIC70115 from Infineon drives both silicon FETs and GaN HEMTs in low-side and high-side configurations while meeting radiation-hardness requirements for satellite applications. The part therefore removes one barrier to replacing silicon with GaN where mass and efficiency matter, provided the designer still accounts for the layout inductance that remains critical at the faster edges.
Automotive TVS diodes target 48 V transient clamping. Littelfuse released the TP5.0SMD-FL and TP1KSMB-FL series based on the FlatSuppressX architecture. These devices deliver a flatter clamping curve and lower clamp voltage than conventional TVS parts while incorporating foldback behaviour that avoids latch-up. The combination directly addresses the tighter voltage margins found in 48 V automotive rails during load-dump and inductive-switching events.
Wideband shunts and differential probe extend power measurement bandwidth. Tektronix introduced a wideband shunt for its IsoVu isolated current probes together with the THDP0400 high-voltage differential probe. The additions respond to the measurement challenge created by SiC and GaN converters whose switching frequencies push conventional current-sense methods beyond their usable range in EV, industrial, and data-centre supplies.
New thermal material exceeds copper conductivity. A material announced this week demonstrates higher bulk thermal conductivity than copper, offering a potential route to reduce heat-spreader mass or improve heat flow from high-power-density packages. The practical limit will still be the interface resistance and the copper pours or vias that connect the die to the spreader.
DDR5 RDIMM chipset raises server memory bandwidth. Rambus introduced a chipset centred on the RCD06 registering clock driver that supports DDR5 RDIMMs at up to 9600 MT/s. The 20% bandwidth increase over the prior generation requires careful attention to clock distribution skew and command/address signal integrity on the module, especially when multiple ranks are populated.
Design debates and tensions
The move to GaN in radiation environments raises a familiar question: how much of the efficiency gain survives once the gate driver, layout parasitics, and thermal stack-up are included. The rad-hard driver removes the radiation qualification barrier, yet the faster voltage and current slew rates still demand tighter control of loop inductance and copper area than equivalent silicon designs. Measurement tools that can resolve those edges become essential rather than optional.
A parallel tension appears in automotive transient protection. Flatter-clamping TVS structures reduce the voltage stress on downstream semiconductors, but they also change the energy that must be absorbed by the device itself. Designers must therefore re-evaluate both the TVS rating and the local decoupling network rather than simply swapping one part number for another.
Component and industry news
Rohm expanded its 600 V super-junction MOSFET range with the R60xxXNx and R60xxWNx series offered in DFN8080-5L and TOLL packages. These surface-mount options target applications that need the established super-junction trade-off between on-resistance and switching loss without moving to a new technology.
Research and technical advances
Work on bulk thermal materials that surpass copper conductivity continues, with the latest announcement focusing on practical integration rather than laboratory peak values. The limiting factor remains the thermal interface and the spreading resistance within the package and board, not the bulk conductivity figure alone.
Standards, compliance, and industry policy
Firmware development practices for connected mobility systems continue to emphasise secure boot, MISRA C compliance, and traceable evidence for functional-safety arguments. These requirements affect both the software architecture and the hardware resources allocated to secure storage and cryptographic acceleration.
Quick Radar
- Factory-floor protocol fragmentation: Multiple industrial protocols continue to coexist without a unifying standard comparable to the consumer Matter specification, complicating gateway and controller design.
- Secure hardware platform collaboration: Swissbit and Nexperia are combining storage and discrete semiconductor portfolios to address long-lifetime, high-reliability server and AI platforms.
- Hardware security verification partnership: Arteris and Arm are extending the use of the Cycuity Radix platform to catch architectural vulnerabilities earlier in processor development flows.
- Raspberry Pi HAT releases: New HATs add AI inference, storage, remote power management, and long-range wireless functions to the Raspberry Pi ecosystem.
- COM-HPC Mini module: ADLINK announced a COM-HPC Mini module based on Intel Panther Lake processors with up to 180 TOPS of AI performance and PCIe Gen5 support.
Closing
When selecting a gate driver or TVS for a new power stage, have you quantified the additional copper area or via count required once the faster edges or flatter clamp curve are taken into account? A practical next step is to compare the measured clamp voltage and the resulting downstream device stress against the previous-generation solution on the same board stack-up.
Sources
- EDN: TVS diodes clamp automotive transients - https://www.edn.com/tvs-diodes-clamp-automotive-transients/
- Embedded.com: Swissbit, Nexperia Partner on Secure Hardware Platforms - https://www.embedded.com/swissbit-nexperia-partner-on-secure-hardware-platforms/
- EDN: Rad-hard gate driver enables GaN adoption - https://www.edn.com/rad-hard-gate-driver-enables-gan-adoption/
- Embedded.com: Arteris, Arm Partner to Strengthen Hardware Security Verification - https://www.embedded.com/arteris-arm-partner-to-strengthen-hardware-security-verification/
- EDN: RDIMM chipset boosts server memory bandwidth - https://www.edn.com/rdimm-chipset-boosts-server-memory-bandwidth/
- EE Times: New Material Beats Copper’s Thermal Conductivity - https://www.eetimes.com/new-material-beats-coppers-thermal-conductivity/
- Electronic Design: Trusted Firmware Development for Connected Mobility Systems - https://www.electronicdesign.com/technologies/embedded/software/article/55391249/neuronicworks-building-trusted-firmware-for-ev-and-connected-mobility-applications/
- Embedded.com: The Protocol Wars: The Factory Floor’s Fragmentation Problem - https://www.embedded.com/the-protocol-wars-the-factory-floors-fragmentation-problem/
- Electronics-Lab: ADLINK Unveils COM-HPC Mini Module for Edge AI Applications - https://www.electronics-lab.com/adlink-unveils-com-hpc-mini-module-for-edge-ai-applications/
- Circuit Cellar: Tektronix Expands Power Measurement Portfolio with New Wideband Shunts and High Voltage Differential Probe - https://circuitcellar.com/newsletter/tektronix-expands-power-measurement-portfolio/
- Electronics Weekly: Rohm adds to 600V Super Junction MOSFETs - https://www.electronicsweekly.com/news/business/rohm-adds-to-600v-super-junction-mosfets-2026-07/
- Electronics Weekly: HATs for Pi - https://www.electronicsweekly.com/news/business/pi-hats-2026-07/