Automotive Archives - Page 15 of 78 - SmartCitiesElectronics.com

Low capacitance ESD protection diodes minimise impact on signal integrity

Thu, Oct 12, 2023

Nexperia has expanded its portfolio of low capacitance ESD protection diodes for high speed data lines. All variants are in leadless packages to improve electrical performance and signal integrity while enabling miniaturisation in automotive designs.

The PESD18VF1BLS-Q, PESD24VF1BLS-Q, PESD30VF1BLS-Q and PESD32VF1BLS-Q are supplied in DFN1006BD-2 packages for optical inspection in automotive production lines using side wettable flanks and the PESD18VF1BBL-Q, PESD24VF1BBL-Q and PESD30VF1BBL-Q are available in the compact DFN1006-2 package.

Target applications are in interfaces such as USB, HDMI, high-speed video links and Ethernet in automotive infotainment applications. Adding additional components to a high-speed data line can deteriorate the signal integrity of the transferred data. Therefore, choosing the right components that protect the system but do not hamper the signal transmission is vital to modern high-speed automotive systems, explained Nexperia. The signal integrity performance of the diodes is enabled by the low device capacitance (as low as a typical 0.28 pF) combined with the higher standoff voltage of 18 to 32V for placement closer to the connector. For maximum design flexibility, these diodes are offered both with and without side wettable flanks, with the side wettable flanks enabling automated optical inspection (AOI).

These AEC-Q101 automotive-qualified devices exhibit extremely deep snapback behaviour combined with a low dynamic resistance of 0.8 Ohm for improved system-level robustness and clamping performance in high-speed data interfaces.

Headquartered in the Netherlands, Nexperia is a global semiconductor company with employees across Europe, Asia, and the United States. It says it develops and produces essential semiconductors which enable the basic functionality of virtually every electronic design in the world from automotive and industrial to mobile and consumer applications.

The company has an extensive IP portfolio and certification to IATF 16949, ISO 9001, ISO 14001 and ISO 45001 standards.

http://www.nexperia.com

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Functionally safe positioning hardware-software model minimises time to market

Wed, Oct 11, 2023

Pre-certified to ISO-26262/ASIL-B, u-safe is end-to-end positioning hardware-software by u-blox and based on market-proven safe components which have been extensively tested in autonomous driving conditions, said u-blox. It can be seamlessly integrated into future-proof advanced driver assistance systems (ADAS) architectures, which “significantly” minimising time to market, said the company.
The model for vehicle positioning is designed to accelerate the adoption of autonomous vehicles. It uses components that are proven in automotive driver navigation systems to offer Tier 1 suppliers and OEMs driver automated and assistance systems in, for example, ADAS Level 3 and above applications requiring high integrity and functional safety features. In addition, ADAS Level 2+ applications can also benefit from u-safe, said u-blox, to ensure that these systems are future proof and ready for a transition into higher levels of automation.
u-blox claimed to be the only supplier in the market today to offer a functional-safety-and-SOTIF compliant safe end-to-end positioning solution combining proprietary hardware with customised software and correction service. The company said u-safe is simplifying the automotive supply chain for customers working on ADAS up to SAE Level 5.
Integrated into ADAS and autonomous driving stacks, u-safe represents an additional layer of safety by offering functional safety (ISO-26262 standard), high integrity and trustworthy positioning for automated and autonomous driving markets.

u-blox said u-safe ensures ASIL-B GNSS localisation for sophisticated safe automotive systems. It incorporates u-blox’s ninth generation GNSS technology platform with A9 ASIL-B chipset and module, PointSafe which uses GMV’s high accuracy and safe correction service and on-board safe position engine, the u-blox Thingstream IoT platform, as well as customised integration support.
u-safe follows the recently announced partnership with GMV, which specialises in navigation for connected and autonomous vehicles. u-blox and GMV joined forces to pioneer functional safety with market-proven components to bring functional safe E2E positioning solutions to the automotive industry for mass-market applications.
u-blox operates in positioning and wireless communication in automotive, industrial, and consumer markets. The company has a broad portfolio of chips, modules, and secure data services and connectivity. The company headquarters are in Thalwil, Switzerland, with offices in Europe, Asia, and the USA.
http://www.u-blox.com

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NXP opens up S32K3 automotive microcontrollers to AWS cloud services

Tue, Oct 10, 2023

NXP Semiconductor has integrated Amazon Web Services (AWS) into its S32K3 automotive microcontroller series for body, zone control, and electrification applications.

The S32K3, S32Z/E, S32G2 and S32G3 enable new in-vehicle and secure cloud services. Using FreeRTOS libraries supporting AWS IoT Core, NXP’s S32K3 with integrated cloud connectivity speeds up the development time for software-defined vehicles (SDVs) to securely connect to the cloud and deliver vehicle data-driven insights and services and over-the-air (OTA) updates, claimed NXP. The software libraries also enable seamless connectivity between the S32K3 and devices running AWS IoT Greengrass.

AWS IoT services have been integrated with NXP’s S32G vehicle network processor for service-oriented gateways since 2020. The NXP S32 devices’ software with AWS cloud solution supports a range of communication technologies and can be used with wireless connectivity technologies like 4G/5G cellular and Wi-Fi. Now NXP S32K3 devices can connect directly to AWS cloud services or a more powerful S32G device using AWS cloud services such as AWS IoT Core, AWS IoT Greengrass or AWS IoT FleetWise.

Extending AWS connectivity to S32K3 gives automotive OEMs the flexibility to build AWS cloud connectivity into their vehicles regardless of the vehicle architecture used and supports the vehicle architecture transition. This includes architectures in which the S32K3 acts primarily as an end node or zonal controller and supplements an S32G vehicle network processor, as well as configurations with multiple S32K devices without an S32G processor, with at least one S32K3 acting as a gateway to access AWS cloud services.

The combination of NXP’s S32 vehicle compute platform and AWS cloud connectivity is appropriate for different mobility types. For example, the direct connection of the S32K3 devices to the cloud is suitable for smaller vehicles such as electric bicycles and scooters, where the S32K3 acts as the aggregator or main controller.

The NXP S32K3 devices are scalable, low power Arm Cortex-M series-based microcontrollers that are AEC-Q100 qualified with advanced safety and security and software support for automotive and industrial ASIL B/D applications in body, zone control and electrification. There is a dedicated hardware security engine (HSE) and A/B swap capability and OTA firmware updates to the S32K3 are secure and protected, said NXP. The devices are supported by a minimum of 15 years of product longevity and a comprehensive, third-party software and tools ecosystem.

Access to and processing of real time, vehicle wide data with secure access to cloud services and machine learning can enable intelligent vehicles that continually improve with OTA updates. This can provide insights into vehicle performance and health, driver behaviour and traffic patterns for automotive manufacturers while consumers can extend the longevity of their vehicles and add features. NXP suggested one example could be that data collected and analysed can lead to new revenue streams with services such as usage-based insurance.

http://www.nxp.com

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Dual output Hall-effect sensors save space while detecting speed and direction

Thu, Sep 21, 2023

For high voltage, automotive and industrial applications, the AH39xxQ series of Hall-effect sensors provide speed and directional data, said Diodes.

The high-voltage, dual output, automotive-compliant sensors provide accurate speed and directional data or two independent outputs. They are designed for industrial and automotive applications such as detecting rotational and linear speed/direction and determining the angular position of a rotating shaft.

They operate over a wide supply voltage range of 2.7 to 27V to meet automotive battery requirements. They also have a 40V absolute maximum rating, enabling them to safely handle 40V load dumps.

There is also -18V of reverse voltage protection to guard against incorrect battery connections.

For added robustness, the ESD (electrostatic discharge) protection exceeds the automotive norms of 5kV human body model (HBM) and 2kV charge device model (CDM).

Three BOP/BRP (operating/release) options are offered, with typical values of 10/-10, 25/-25 and 75/-75 Gauss and the narrow operating window ensures accurate and reliable switching points, confirmed Diodes.

Dual-channel operation means these sensors can replace two latch switches, reducing both PCB space and overall component costs. Combining chopper-stabilised amplifiers with an advanced Hall plate design mitigates switch point drift, ensuring accurate measurements over a broad temperature range.

The self-diagnostic features make the AH39xxQ sensors suitable for ISO 26262-compliant systems. There is also a safe operating mode which is entered if an error, such as over-temperature or under-voltage lockout, is detected.

The AH39xxQ series Hall-effect sensors from Diodes are AEC-Q100 Grade 0 qualified, manufactured in IATF 16949 certified facilities, and support PPAP (production part approval process) documentation.

They are supplied in TSOT25 packages.

Diodes supplies semiconductor products to the world’s leading companies in the automotive, industrial, computing, consumer electronics, and communications markets. Its product portfolio consists of discrete, analogue and mixed-signal products and packaging technology.

The company has worldwide operations of 32 sites, including engineering, testing, manufacturing.

http://www.diodes.com

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Low capacitance ESD protection diodes minimise impact on signal integrity

Functionally safe positioning hardware-software model minimises time to market

NXP opens up S32K3 automotive microcontrollers to AWS cloud services

Dual output Hall-effect sensors save space while detecting speed and direction

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