Diodes to introduce first automotive AEC-Q100-grade 3 packet switches

At Embedded World 2017, Diodes introduced the PI7C9X2G304SLQ and PI7C9X2G404SLQ (Hall 3A – 431). They are the industry’s first packet switches to be automotive-qualified to AEC-Q100 grade 3. 

The PCI Express (PCIe) three‑port/four‑lane and four‑port/four‑lane packet switches are specifically designed to meet automotive industry requirements, targeting applications in infotainment, telematics and advanced driver assistance systems (ADAS). The PI7C9X2G304SLQ and PI7C9X2G404SLQ feature power management, hot-plug connectivity and an integrated 100MHz clock buffer to lower the bill of material cost, adds Diodes.

Vehicle telematics and infotainment systems demand connectivity that meets both the latest communication standards and automotive reliability criteria. Based on Diodes’ PI7C9X2G PCIe2 packet switch family, the PI7C9X2G304SLQ and PI7C9X2G404SLQ offer compliance to AEC-Q100 Grade 3 over the full automotive temperature range of -40 to +85 degree C, while meeting PCISIG PCIe rev. 2.1 for interoperability.

Mean time between failure rate is over 50 million hours. The PI7C9X2G304SLQ and PI7C9X2G404SLQ are characterised by low power dissipation – typically 650mW in normal L0 mode and just 200mW in L1 mode. This level of power dissipation eases thermal design, says Diodes. Added to which, latency is low, typically 150ns for a packet running through the switch without blocking.

To meet non-automotive requirements for greater fan-out, port-extension flexibility, and to support multiple-host functionality for failover operation, Diodes has also introduced nine‑port/12‑lane and 16‑port/16‑lane versions of its PCIe packet switches, the PI7C9X2G912GP and PI7C9X2G1616PR. These two devices support multiple x2 downstream ports, making them suitable for a range of embedded system, networking, telecomms and storage applications, such as backplanes, industrial process controllers, switches, routers, gateways, basestations, RAID controllers, solid state drives, and network attached storage (NAS) equipment. 

Diodes’ automotive-grade PI7C9X2G304SLQ and PI7C9X2G404SLQ packet switches are offered in a 128-pin LQFP. The nine‑port/12‑lane PI7C9X2G912GP packet switch is offered in a 196-pin PBGA, while the 16‑port/16‑lane PI7C9X2G1616PR comes in a 324-pin HSBGA package.

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