Electronics Industry Awards 2022
Optical networking for autonomous driving
By César Esteban, applications and support manager at KDPOF A
s connected vehicles and automated driving enter the streets the question of the right physical layers for automotive connectivity
becomes more essential. Selecting the best technology is a difficult engineering task, as it requires a delicate balance between preconditions such as speed, cost, and robustness against electromagnetic noise. There have traditionally been two main alternatives for physical layers in automotive applications: optical and copper-based. The key advantages of the optical solution, among others, are superior Electromagnetic Compatibility (EMC) thanks to noise immunity, low weight, and low cost. The optical cables are absolutely reliable and much more flexible than copper cables in the same bandwidth range. They allow fast, dynamic and tight bending as well as immersion in dark liquids. In addition, optical connectivity guarantees easy engineering for seamless implementation.
Reliable, cost-efficient and flexible KDPOF has designed an integrated KD9351 Fiber Optic Transceiver (FOT) that further reduces costs for optical in-vehicle networks at 1 Gb/s. Incorporating the transmit and receive optoelectronics – such as transimpedance amplifier, photodiode, LED driver, and LED – into one single component, the KD9351 is an optical transceiver for 1 Gb/s down to 100 Mb/s with a small footprint. Compared to STP (shielded twisted pair of copper wires), the combination of the new KD9351 FOT with the existing KD1053 IC cuts the cost for 1 Gb/s by 30 per cent. The KD9351 optical interface complements the proven KD1053 digital interface IC, thus providing a full optical port. The assembly of the FOT and the IC is simplified and the connector offers snap-fit without soldering. The devices form a complete automotive 1000BASE-RHC physical layer. Additional benefits are a shorter supply chain and no test duplication, with the final test at the Tier1. The KD9351 reuses low-cost
14 EIA Supplement 2022
user can plug a standard SFP module into the cage and have media converter functionality supporting Wake-Up & Sleep.
Next generation automotive vehicle computer
Copyright: KDPOF/Getty Images
MEMs encapsulation and allows SMD reflow assembly with 8 by 7 mm LGA components. It is fully shielded against electromagnetic radiation. The temperature range, from -40 °C to +105 °C, conforms with harsh automotive environmental requirements.
Easy engineering for seamless implementation
With the extensive evaluation kit EVK9351AUT, KDPOF equips carmakers, suppliers, and test houses to fully evaluate the automotive transceivers KD9351 and KD1053 for automotive optical 1000BASE-RHC PHY implementation. The platform provides all the functional and performance evaluation capabilities requested by the automotive
Integrated KD9351 FOT for automotive gigabit connectivity Copyright: KDPOF
industry for a quick and easy project launch of optical gigabit connectivity in vehicles. It therefore enables product designers to successfully evaluate KDPOF’s technology and shorten the time-to-market.
The evaluation kit contains 2 EVB9351AUT evaluation boards, 2 evaluation board metal enclosures (optional), 2 1000BASE-T SFP modules, 2 100BASE-TX SFP modules (optional), 1 USB2ALL monitoring module, 1 optical harness, 2 Cat. 5e UTP cables, 2 direct- attach passive SFP twinax cables (optional), as well as user and design documentation. The evaluation boards can operate at 1,000 Mb/s and 100 Mb/s. A single version of a PCB board is compatible with multiple headers and harnesses from different manufacturers. The
Funzin AIoT Platform FAIP 3.0 and Edge AI Device Photon integrate eight optical interfaces with KDPOF’s KD1053 and KD9351 Copyright: Funzin
Renesas have chosen the KD1053 PHY IC and integrated KD9351 FOT for their new next generation automotive vehicle computer VC4. This comprehensive communication gateway ECU features the newest automotive network technologies and sufficient computing power to host the ever-increasing number of user applications. The four megatrends of autonomous driving, connected cars, electric vehicles, and shared mobility move the E/E architecture from domain based into a zonal architecture in order to meet the increasing complexity and computation demands of the next generation vehicles.
Network solution for autonomous vehicles
Funzin have integrated KDPOF’s chipset in the Funzin AIoT Platform “FAIP 3.0” and Edge AI Device “Photon”. The new system solution provides the gigabit communication infrastructure needed for sending and receiving high-capacity data. The devices contain a controller board, a POF QHD camera, and POF cable. The carrier board supports the connection with a variety of POF legacy devices. It provides eight optical interfaces with KDPOF’s KD1053 and KD9351, delivering bandwidth of 1 Gb/s each.
EMC-safe in-vehicle network Optical connectivity perfectly solves the challenges posed by electrical interferences in vehicles thanks to its low weight, low cost, and superior electromagnetic compatibility performance due to inherent galvanic isolation. Applications include safe Ethernet backbones, smart antenna modules, and sensor connections for ADAS and audio/video.
www.kdpof.com Components in Electronics
electronicsindustryawards.co.uk
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