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PHY is integrated for fibre optic automotive networking

Thu, Nov 19, 2020

Believed to be the first device for optical in-vehicle connectivity incorporating a transceiver IC, optoelectronics and optics, the KD7051 is an integrated fibre optic transceiver (FOT) from KDPOF.

The integrated FOT is a 100Mbit per second optical port in one single component. “By constructing the ASIC IC, photodiode and LED as one single device, we significantly reduce cost and footprint for automotive Ethernet connectivity at 100 Mbits per second,” said Carlos Pardo, CEO and co-founder of KDPOF. “The decreased number of parts also reduces the effort in testing and qualification,” he added.

The KD7051 reduces cost, compared to shielded twisted pair (STP) of copper wires, said KDPOF. There are no margin stacking between links in the supply chain and supply chain simplification, which offers competitive pricing for EMC critical or galvanic isolated critical links, says KDPOF. Applications include battery management systems, camera and sensor links, fast Ethernet links and smart antenna links.

KDPOF’s KD7051 transceiver IC offers a complete FOT design, which reuses low cost MEMs encapsulation and allows SMD reflow assembly with 8.0 by 7.0mm LGA components. The FOT is shielded against electromagnetic radiation. Fibre connection is via a simple plastic connector placed on top. The temperature range, from -40 to +105 degrees C, conforms with harsh automotive environmental requirements. It has a vibration class of V2 and withstands motor conditions. According to KDPOF, the device endures water without sealing. Shielding is integrated into the PCB component to strengthen EMC performance even with the ECU shield case removed. The first prototypes are available now.

The plastic optical fibre has a large diameter, making it more cost-effective to manufacture and install. During car assembly, the optical harness can be installed in the same process as the copper harness to ease installation.

Fabless semiconductor supplier KDPOF provides innovative high speed optical networking for harsh environments. It makes Gbit communications over fibre optics a reality, and supplies 1Gbit per second POF links for automotive, industrial, and home networks.

The company was founded in 2010 in Madrid, Spain, and offers a cost-effective technology as either ASSP or IP to be integrated in SoCs. The adaptive system works with a range of optoelectronics and low cost large core optical fibres, for a low risk, low cost, reduced time to market for vehicle manufacturers.

http://www.kdpof.com

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Integrated modules simplify IEEE 1588 integration

Tue, Nov 17, 2020

IEEE 1588 system integration can be simplified using modules developed by Silicon Labs. The modules combine Precise Time Protocol (PTP) hardware, software and configured with ClockBuilder Pro software.

IEEE 1588 in communications, smart grid, financial trading and industrial applications can be accelerated using Silicon Labs’ ClockBuilder Pro software, a tool to enable designers to accelerate development of IEEE 1588 system integration by combining PTP profile selection, PTP network configuration and physical layer clock/port configuration.

“Extending ClockBuilder Pro support to our IEEE 1588 modules helps customers accelerate time to market while eliminating the system design challenges associated with less integrated solutions,” said James Wilson, general manager of Timing Products at Silicon Labs.

The adoption of IEEE 1588 packet-based time synchronisation is proliferating beyond communication networks into emerging applications where system designers may have limited prior experience with timing and synchronisation, advises Silicon Labs. A key design challenge for engineers is optimising IEEE 1588 system-level performance, a function of board-level hardware/software design as well as network impairments, such as the packet delay variation caused by changing traffic loads.

Silicon Labs’ ClockBuilder Pro provides PTP profile selection, clock/port programming and simple control of Silicon Labs’ AccuTime IEEE 1588 software to configure operation for a variety of network conditions and topologies. Silicon Labs IEEE 1588 modules are standards-compliant with telecomms (G.8265.1, G.8275.1 and G.8275.2), power (IEEE C37.238-2011 and 2017), broadcast video (SMPTE 2059.2), and default profiles while meeting the stringent timing and synchronisation requirements outlined in ITU-T G.8261, G.8273.2 (T-BC, T-TSC), G.8273.4 (T-BC-P and T-TSC-P), G.8262, G.812, G.813 and Telcordia GR-1244-CORE / GR-253-CORE.

ClockBuilder Pro can be downloaded at the Silicon Labs website.

Silicon Labs provides silicon, software and solutions, and has a portfolio of technologies shaping the future of the IoT, internet infrastructure, industrial automation, consumer and automotive markets. Its engineering team creates products focused on performance, energy savings, connectivity and simplicity.

http://www.silabs.com

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Automotive -grade proximity sensors prevent false triggers

Tue, Nov 17, 2020

Two integrated automotive-grade proximity sensors with high resolution up to 20 micron for force sensing applications have been released by Vishay Intertechnology. Each combine a photodiode, amplifier and ADC circuitry in a 4.0 by 2.36mm surface mount package with a low 0.75mm profile. The VCNL3030X01 features an on-board infrared emitter (IRED) while the VCNL3036X01 is designed to be used with up to three external IREDs, for which an on-board driver with internal logic is provided.

They are intended for use in automotive, consumer, smart home, industrial, office products and toys. The AEC-Q101-qualified devices provide higher resolution compared to previous generation sensors at a lower cost, says Vishay Intertechnology. The VCNL3030X01 and VCNL3036X01 can be used for force sensing applications in steering wheel controls, laptop smart power buttons and multi-force trackpads, and touchpads for IoT devices and kitchen appliances. The sensors prevent false triggers and even allow users to wear gloves, advises Vishay. The VCNL3036X01 is designed to work with external IREDs, for increased flexibility for product design.

Both VCNL3030X01 and VCNL3036X01 sensors support the I²C bus communication interface and the programmable interrupt function allows designers to specify high and low thresholds, which reduces the continuous communication with the microcontroller. The proximity sensors have selectable 12-bit and 16-bit outputs, and use intelligent cancellation to eliminate crosstalk. There is also a smart persistence scheme which ensures accurate sensing and faster response time. The VCNL3030X01’s emitter wavelength peaks at 940nm and has no visible ‘red-tail’, says Vishay.

The VCNL3030X01 and VCNL3036X01 have an IRED / LED pulse current of 200mA, a supply voltage range of 2.5 to 3.6V and an I²C bus voltage range from 1.8 to 5.5V. For force sensing applications, the sensors offer the flexibility to fine-tune the current for short displacements.

The devices are RoHS-compliant, halogen-free, and Vishay Green.

The VCNL3030X01 and VCNL3036X01 proximity sensors are sampling now and available in production quantities with lead times of six to 12 weeks for large orders.

http://www.Vishay.com

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Wi-Fi 4 chip delivers next-generation WPA3 security

Mon, Nov 16, 2020

For cost-effective and secure IoT projects, the Infineon CYW43439 is a dedicated Wi-fi 4 chip which delivers the latest WPA3 security standard. The Wi-Fi/Bluetooth/Bluetooth Low Energy chip can be used for smart thermostats or smart lighting and other applications which need to comply with new security regulations, including the California Consumer Privacy Act which gives consumers the right to know the personal information a business collects, and the right for that information to be deleted.

Approximately half a billion new devices are expected to ship implementing Wi-Fi 4, the basic connectivity standard for the IoT, through 2025. Devices will be expected to support the latest features, such as WPA3.This security standard allows more robust authentication, increased cryptographic strength and more resilient mission-critical networks. Designers can use the Infineon CYW43439 to provide connectivity and implement the security standard in the product.

“For many IoT-connected products like smart thermostats and other consumer devices, their connectivity is both low bandwidth and low-duty cycles,” said Jeff Baer, senior product marketing director, IoT RF at Infineon. The CYW43439 allows customers to use the WPA3 security standard, and at the same time minimise connectivity cost by using Wi-Fi 4, he added.

With Wi-Fi 4, the CYW43439 enables robust, power-efficient performance, with worldwide certifications and certified interoperability. It can be used with RTOS, Linux, and Android platforms, and there is development support for software that includes advanced smart-coexistence for multi-user Wi-Fi and Bluetooth applications. This enables multiple connections simultaneously including Bluetooth Low Energy Mesh networking.

The devices reduce system power consumption by providing host SoC off-load processing for network management and audio applications reducing CPU loading. The optimised software for library-based functions allows connections to mobile devices or any cloud service at any time.

Infineon offers the CYW43439 with ModusToolbox software, describing it as an adaptable development systems for the IoT, with packaged solutions supporting popular ecosystems and cloud management tools.

The Infineon CYW43439 is available in volume quantities. Commercial modules are also available from industry-leading module partners.

http://www.infineon.com

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PHY is integrated for fibre optic automotive networking

Integrated modules simplify IEEE 1588 integration

Automotive -grade proximity sensors prevent false triggers

Wi-Fi 4 chip delivers next-generation WPA3 security

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