Historically, automotive 48-volt systems were synonymous with mild hybrids. Yet as power-hungry loads like central computing, zonal controllers, and ADAS continue to proliferate, 48V is finding a new industrial logic.
During a media briefing at GlobalFoundries' Technology Summit China on the afternoon of September 22, the chipmaker told Gasgoo that the industry’s migration from 12V to 48V architectures is now inevitable. The reasoning is straightforward: as vehicles demand more computing and control power, forcing traditional 12V systems to handle the load would mean higher current, greater transmission losses, and mounting pressure on wiring harnesses and power management systems.
The company argues that as the industry evolves toward software-defined vehicles and zonal architectures, control zones will become fewer yet smarter. At the same time, electrification is driving a shift toward multi-voltage platforms. Consequently, voltage regulators, DC-DC converters, and power management ICs are emerging as critical growth segments for the next generation of automotive semiconductors.
Still, GlobalFoundries cautions that 48V technology remains in its infancy and won't fully displace 12V systems anytime soon. The transition pace will vary across different automakers and vehicle platforms. A major barrier to rapid adoption, the company notes, is simply that 12V systems have been entrenched in the automotive sector for decades, supported by mature supply chains, component ecosystems, and validation processes.
That implies the latest wave of 48V adoption carries a different significance than in the past.
If previous iterations served primarily mild hybrids, start-stop systems, and energy recovery, the era of intelligent vehicles sees 48V addressing the power demands of central computing, zonal control, and high-consumption electronics.
It’s still 48V, but the force driving it into vehicles is shifting from powertrain systems to the overall electronic-electrical architecture.
