Category: Automotive Product of the Year
Modern cars contain a huge amount of automotive electronics and as the market evolves with the uptake of electric vehicles, the evolution of autonomous driving and connected mobility, the data payload which needs to be managed and transmitted in the car is driving up bandwidth requirements. Existing protocols such as LIN, CAN-FD and FlexRay are no longer sufficient in a heterogeneous in-vehicle network.
Changing the wiring harness to a hierarchical homogeneous network and zonal architecture and implementing Automotive Ethernet as the global backbone is expected to reduce cost and cabling weight. It also supports rising demands of high data-rates, data security, and flexibility. However, it means that discrete ESD protection devices are required for high system level ESD robustness and need to fulfil the latest requirements emerging with these trends.
The OPEN Alliance (One-Pair Ether-Net) Special Interest Group (SIG) is a non-profit alliance of mainly automotive industry and technology providers collaborating to encourage wide scale adoption of Ethernet-based networks as the standard in automotive networking applications. Member companies, including Nexperia, work together to complete the eco system with requirements and test specifications for harnesses, switches, ECUs and other functionalities.
As a technology member of the OPEN Alliance SIG, Nexperia has developed fully compliant ESD protection devices based on silicon technology for 100BASE-T1 and 1000BASE-T1 Ethernet. Silicon based ESD protection devices offer a significantly higher performance level of protection – up to 30kV system level robustness â€“ than competing technologies such as varistors. Nexperia is the first manufacturer to offer fully-compliant 100/1000BASE-T1 OPEN Alliance Ethernet ESD Protection.
The Nexperia ESD protection solutions, PESD2ETH100-T and PESD2ETH1G-T, provide outstanding robustness at high data rates without showing degradation.
The PESD2ETH100-T for 100BASE-T1 Ethernet has low capacitance of < 3 pF and ESD protection up to 30kV ((IEC 61000-4-2, contact), with ESD robustness of 30Kv at 1000 discharges. A further advantage is a high trigger voltage of Vt1 = 100 V min. The package is SOT23, automotive grade, AEC-Q101 qualified.
The PESD2ETH1G-T for 100/1000BASE-T1 Ethernet device has low capacitance of < 2 pF and offers ESD protection up to 30 kV (IEC 61000-4-2, contact). ESD robustness is 15 kV at 1000 discharges and the trigger voltage is Vt1 = 100 V min. Again, the PESD2ETH1G-T for 100/1000BASE-T1 Ethernet has the SOT23, automotive grade, AEC-Q101 qualified package.
With the development of these two devices, soon to be joined by a further three later this year, Nexperia has enabled the next important step in automotive connectivity and electrification.