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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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Intelligent IOLINK actuator reduces power by more than 50 per cent

Mon, Nov 16, 2020

Factory productivity is boosted by using the PD42-1-1243-IOLINK intelligent actuator, says Maxim Integrated, through monitoring 50 per cent more configuration and performance parameters. The Trinamic-branded intelligent actuator enables smart factories to quickly and remotely adjust an actuator’s electrical characteristics to minimise factory downtime and maximise throughput, says the company.

The PD42-1-1243-IOLINK combines a NEMA-17 stepper motor with controller and driver electronics and uses Maxim’s MAX22513 IO-Link transceiver to allow seamless configuring of all modes of Trinamic’s TMC2130-LA motor driver.

It is, says Maxim, the industry’s smallest, lowest-power NEMA-17 PANdrive actuator. It monitors 50 per cent more configuration and performance parameters to reduce commissioning times as well as to improve the quality of predictive maintenance data.

The TMC2130-LA motor driver and MAX22513 IO-Link transceiver chipset builds on the IO-Link’s two-way universal interface. The plug-and-play solution is 2.6x smaller and more than 50 per cent lower power compared to the competing solution, claims Maxim.

The MAX22513 IO-Link transceiver is supplied in a 4.2 x 2.1 WLP, which is three times smaller than the closest alternative currently available, Maxim says, making it the industry’s smallest ±1kV/500Ohm surge-protected, dual-driver IO-Link transceiver. It features high integration with a DC/DC regulator, protection diodes, auxiliary digital input, I²C or SPI control, integrated oscillator and selectable 3.3V or 5.0V LDO. It also enables four times lower power dissipation due to low 2.0 Ohm (typ) C/Q driver on-resistance compared to the nearest competing solution, according to Maxim.

The TMC2130-LA motor driver offers stall detection with no sensors necessary, to flag unwanted mechanical behaviour. It provides extremely smooth and precise motion with up to 256x microstepping compared to the 16x industry standard, resulting in accurate positioning and minimised resonance. Key integrated functions include a complete driver stage with low RDS(on) N-channel power MOSFETs configured as full H-bridges to drive the motor windings up to 1.2A RMS at 5.0 to 46V, an SPI for configuration and diagnostics, as well as a step-direction interface.

The PD42-1-1243-IOLINK increases productivity by adjusting more device parameters on-the-fly. It provides access to load values and noise reduction parameters using StealthChop technology to dynamically optimises the actuator throughout its operation.

TMC2130-LA’s CoolStep power savings feature, combined with MAX22513’s low RDS(on) N-channel power MOSFETS are claimed to provide best-in-class power savings compared to other NEMA-17 IO-Link drives on the market

Eliminating external limit switches to detect hard stop conditions results in a solution size of 82cm³, making it the smallest IO-Link intelligent actuator available today, says Maxim.

The PD42-1-1243-IOLINK is available at Trinamic’s authorised distributors.

Maxim Integrated is an engineer’s engineering company. It has a portfolio of high-performance semiconductors, combined with tools and support to deliver essential analogue solutions including efficient power, precision measurement, reliable connectivity and robust protection along with intelligent processing.

Designers in application areas such as automotive, communications, consumer, data centre, healthcare, industrial and the IoT make up the company’s customer base.

http://www.maximintegrated.com

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TrustAnchor provides simple path to automotive network security

Thu, Nov 12, 2020

Automotive OEMs and their module suppliers can use TrustAnchor to upgrade existing designs to meet security requirements, says Microchip. The cryptographic security IC supports in-vehicle network security solutions such as secure boot, firmware update and message authentication, including controller area network (CAN) MAC at bus speed, says Microchip.

The rise of in-vehicle network connections like Bluetooth and LTE/5G, means convenience but also more vulnerabilities in an automotive system. The TrustAnchor100 (TA100), CryptoAutomotive security IC helps OEMs and their module suppliers to simplify the upgrade of existing designs to meet security requirements for future generations.

To comply with new security specifications, automotive designers have to revise the vehicle’s electronic control units (ECUs) with secure hardware. Using single chip, dual core hardware security module (HSM) devices for this requires OEMs and module suppliers to rework application software to integrate the security element. This can introduce security holes, which can be overcome by third party security software but it will increase development costs.

The TA100 provides an alternative in-vehicle network architecture implementation for secure boot and message authentication. It has been approved by OEMs around the world as a solution for EVITA (e-safety vehicle intrusion protected applications) medium and full HSM requirements. Its feature set was designed following the review of OEM cybersecurity specifications. Microchip also offers security specification and request for quote (RFQ) review services to assist Tier 1s in developing educated responses.

According to Microchip, the TA100 removes the challenges associated with secure code development and provisioning by offering pre-programmed cryptographic internal application code provisioned with unique asymmetric key-pairs and associated x.509 certificates, thereby reducing risk, cost and time to market.

The device has high resistance to attack through intensive third-party vulnerability assessments, says Microchip and is AEC-Q100 Automotive Grade-1-qualified, FIPS 140-2 CMVP Security Level 2-rated and Physical Key Protection Level 3-certified. It has also achieved the highest possible vulnerability assessment rating of Joint Interpretation Library (JIL) High. The TA100 provides software components like AUTOSAR drivers, MCALs and Microchip’s CryptoAuthentication library for seamless integration into AUTOSAR, the industry standard OS, or customised software stacks for crypto functions.

The TA100 offers AUTOSAR-compliant MCAL drivers that can be integrated into an AUTOSAR software stack. A full AUTOSAR reference stack is available, enabling automotive vendors to deploy the latest crypto standards into automotive systems within standard automotive production environments, explains the company. MikroBUS-compatible socket boards are also available.

The TA100 is available in an eight- and 14-pin SOIC packages.

http://www.microchip.com

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Automotive -grade proximity sensors prevent false triggers

Wi-Fi 4 chip delivers next-generation WPA3 security

Intelligent IOLINK actuator reduces power by more than 50 per cent

TrustAnchor provides simple path to automotive network security

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