As automotive electrical architectures transition from traditional 12V systems to higher power 48V systems, protecting sensitive electronics from transient overvoltage becomes increasingly important. In this QuickChat, Electronic Design Senior Content Director Bill Wong speaks with Charlie Cai from Littelfuse about the evolving role of the 48V automotive TVS diode and new approaches to transient voltage suppression.

Cai explains how 48V architectures can support power-intensive technologies such as ADAS, lidar, steer-by-wire, and active suspension while reducing wiring harness weight. However, meeting ISO overvoltage requirements can force designers to use conventional TVS devices with higher clamping voltages, potentially requiring more expensive downstream components.

The conversation explores Littelfuse FlatSuppressXTM technology, which combines snapback technology with a controlled, low clamping voltage to provide 48V automotive power protection without latch-up risk. Cai also discusses how this approach can strengthen automotive electronics protection, help designs meet required ISO testing, and potentially reduce overall BOM costs.

Watch the full QuickChat to learn how low clamping voltage TVS technology is addressing the protection challenges created by next-generation automotive power architectures.