Weartech-ICs & Semiconductors Archives - Page 21 of 41

eFuse ICs protect and control circuits in datacomms and industry

Thu, Oct 06, 2022

Four ICs have been developed by Littelfuse to protect, sense and control consumer, datacomms and industrial electronics. There are four eFuse Protection ICs available from Littelfuse.

The ICs are designed to provide a wide range of power input (3.3V to 28V) and integrated protection in the form of over-voltage, over-current, short circuit, inrush current, reverse current, and over-temperature protection with real-time diagnostics – all in a single chip.

The LS0504EVT233 is a 5V, 4A IC with over-voltage, over-current protection in an SOT23-3 package. The LS0505EVD22 is a 5V, 5A model with over-voltage and over-current protection in a DFN 2.0 x 2.0mm package. The LS1205ExD33 is an 18V, 5A IC with programmable current limit and output voltage clamp in a DFN 3.0 x 3.0mm package. The fourth model, the LS2406ERQ23 is a 28V, 6A true reverse block, fast role swap IC in a QFN 2.5 x 3.2mm package.

The ICs can be used in Bluetooth headsets, wearable devices, PCs as well as tablets and notebooks, charging cables, battery-powered and adapter powered devices, networking and datacomms power systems, fan control HDD and SDD storage drives and industrial equipment with 12/24V power I/O.

The ICs provide an accurate current limiter, with faster response time and more integrated protection features than traditional fuses and PTCs, claimed Littelfuse. They also have design flexibility with adjustable over-voltage threshold, current limiting, and inrush current protection, with true reverse current blocking. The integrated ICs save PCB space and reduce the bill of material cost, while reducing design-in phase and time to market compared to typical discrete solutions, such as a hot-swap controller and MOSFET combination, said the company.

They are also claimed to increase battery life, lower repair costs and extend overall product lifetime.

“Providing a low power consumption, high accuracy current limiting circuit with quick response time makes them a win-win-win for many portable electronics and datacom applications,” said Bernie Hsieh, assistant product manager of the Protection Semiconductor business team at Littelfuse.

The eFuse Protection ICs are available in tape and reel format in quantities through authorised Littelfuse distributors worldwide.

http://www.Littelfuse.com

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NFC tags meet authentication security measures, says Infineon

Mon, Aug 08, 2022

Near field communication (NFC) tags released by Infineon Technologies meet high security requirements for proving authenticity. The NFC4TCxxx tags can protect consumer products to ensure they are not counterfeit to safeguard brand identity and revenue. In products such as pharmaceutical and food, the company pointed out, counterfeit products can pose a serious threat to consumer health and safety.

The NFC4TCxxx tag includes an open standard security architecture using AES-128 cryptography. It is also equipped with inherent resistance to physical attacks such as differential power analysis (DPA) and differential fault analysis (DFA).

The secured NFC tags have a range of memory options, from 304 bytes to 4kbytes, enabling brands to store data and create customised applications.

The tags can be programmed with brand-specific landing pages that provide additional information about the product and also show the customer a list of similar products. They can also offer two-way communication between the consumer and the brand, direct users to exclusive offers and invitations to special events while helping brands to use customer analytics to optimise products and marketing.

Infineon has also introduced the NFC 2Go starter kit which demonstrates consumer product authentication enabled by Infineon’s secured NFC tags with an NFC smartphone. The kit includes NFC stickers, iOS and Android mobile apps, back end cloud authentication software, tag personalisation tools and a user guide.

The NFC4TCxx tags and the NFC 2Go starter kit for brand protection can be ordered now.

http://www.infineon.com

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Renesas’ SmartBond DA1470x SoCs are integrated for wireless connectivity

Wed, Jun 22, 2022

Renesas Electronics has announced the SmartBond DA1470x family of Bluetooth low energy (LE) integrated SoCs for wireless connectivity.

Renesas claimed the DA1470x family to be the only device in the Bluetooth LE space to integrate a power management unit, a hardware voice activity detector (VAD), a graphics processing unit (GPU) and Bluetooth LE connectivity all into a single chip.

This combined functionality provides smart IoT devices with advanced sensor and graphical capabilities and seamless, low power, always-on audio processing. The SoCs are suitable for wearables, such as smart watches and fitness trackers, glucose monitor readers and other consumer medical and healthcare devices, home appliances with displays, industrial automation and security systems, and Bluetooth consoles such as e-bikes and gaming equipment.

“The DA1470x family … enables developers to push the boundaries of connected consumer and industrial applications and future-proof their IoT products to fit the needs of multiple applications, while optimising their bill of materials,” commented Sean McGrath, vice president of the connectivity and audio business division in Renesas’ IoT, Industrial and Infrastructure business unit.

The high level of integration results in “significant cost savings” on the bill of materials (BoM), enabling cost-effective system solutions, according to the company. It also reduces component count on the PCB, enabling smaller form factor designs and freeing up space for additional components or larger batteries. With fewer components on the PCB, the reliability of the system improves, it claimed, delivering a further reduction in the total cost of goods sold (COGS) of the end product.

The wireless SoCs feature a multi core system – with an Arm Cortex-M33 processor as the main application core and Cortex -M0+ as the sensor node controller.

An integrated 2D GPU and display controller supports DPI, JDI parallel, DBI and single / dual / quad serial peripheral interfaces (SPIs) and there is a configurable Mac supporting Bluetooth LE 5.2 and proprietary 2.4GHz protocols.

An integrated 720mA JEITA-compliant USB charger supports rechargeable Li-ion / Li-Po batteries, while an integrated low quiescent current SIMO DC/DC converter of the PMU supplies internal system and external components.

Low power hardware VAD enables seamless and always-on audio processing.

The DA1470x family consists of four new devices, all of which are in mass production and available now.

The DA14706 has already been used in the Xiaomi Mi band 7 wearable activity tracker with a 1.62-inch, 192×490 Amoled display, 120 sports modes and a 15-day battery life for typical use.

The DA1470x family will be demonstrated at Embedded World (21-23 June) in Nuremberg, Germany, at Booth Hall 1-234.

A provider of microcontrollers, Renesas combines its expertise in embedded processing, analogue, power and connectivity to deliver complete semiconductor solutions. These combinations accelerate time to market for automotive, industrial, infrastructure and IoT applications.

http://www.renesas.com

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Integrated listener for NFC wireless charging cuts board footprint by more than half

Wed, Jun 22, 2022

Panthronics has released early samples of what it claimed to be the industry’s first fully integrated NFC wireless charging listener device, the PTX30W.

The single chip PTX30W integrates an efficient rectifier, NFC tag, battery charger and power management as well as protocol handling. The NFC tag supports bidirectional data communication in NFC Type A mode. This enables the transfer of data between the charging cradle and the device under charge, such as the battery’s state of charge or fault indicators, as well as enabling firmware upgrades of both devices.

The PTX30W will work in tandem with an NFC poller such as the Panthronics PTX130W in a charging cradle. It harvests power wirelessly without the need for a microcontroller in the listener device.

It replaces four discrete components with a single chip and occupies less than half the board footprint, to save space in products such as medical sensors, fitness trackers, smart watches, earbuds, hearing aids, smart glasses, smart rings and styluses, said Panthronics.

The PTX30W runs an NFC forum-derived wireless charging protocol that supports power negotiation. This means that the PTX30W will simplify product development, said the company, as it can operate in standalone wireless charging mode with no need for an external microcontroller to run NFC wireless charging operations.

When paired with the Panthronics PTX130W, the NFC poller with the industry’s highest power output, the PTX30W can harvest up to 1W of power for fast charging of lithium-ion batteries, the company claimed.

Mark Dickson, chief marketing officer of Panthronics, said: “NFC wireless charging … operates via a small antenna and supports wireless communication as well as power transfer. Now with the development of the integrated PTX30W, Panthronics is offering device manufacturers a roadmap to even more space savings as well as a simpler system design for faster time-to-market.”

The PTX30W is sampling now to alpha customers. Customer samples will be generally available on the full release of the product later in 2022. Panthronics is presenting the PTX30W prototype demonstration kit at Embedded World (21-23 June) in Nuremberg, Germany, in Hall 1-139.

Founded in 2014, Panthronics is a semiconductor product company headquartered in Graz, Austria. It develops differentiated wireless solutions from the ground up for security and power applications.

http://www.panthronics.com

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eFuse ICs protect and control circuits in datacomms and industry

NFC tags meet authentication security measures, says Infineon

Renesas’ SmartBond DA1470x SoCs are integrated for wireless connectivity

Integrated listener for NFC wireless charging cuts board footprint by more than half

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