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NuCurrent cuts loose by extending HF wireless charging

Fri, Mar 26, 2021

For product categories that are using RF and inductive charging, NuCurrent has launched NuEva (high frequency) HF development platform based on inductive resonant power transfer.

“There are a great number of product categories that aren’t well-served by RF and inductive charging,” said NuCurrent’s CEO, Jacob Babcock. “NuEva HF delivers power levels about 1,000 times higher than RF and it provides positioning flexibility about 100 times that of Qi,” he said. It can also charge multiple devices simultaneously.

The NuEva HF platform operates at 6.78MHz, the same frequency as the standard developed by the AirFuel Alliance. In addition to multi-device charging from a single transmitter, greater spatial freedom and positioning flexibility, the HF method of power transfer delivers high system efficiencies and uniform charging zones and up to 300W power.

“NuEva HF represents a generational leap forward for inductive resonant power transfer,” said Babcock. It is intended for a range of applications, from gaming and robotics to personal transportation and medical devices, using wireless power.

NuEva HF offers several patented and proprietary technologies developed by NuCurrent. Among these innovations is face “repeater” technology which extends charging surface areas using inexpensive passive electronics driven from a single power source.

There is also multi-layer, multi-turn (MLMT) antennae that increase efficiencies and lower thermals and a variety of methods for cost-effective EMI mitigation, said NuCurrent.

The in-band communications reduce system cost, compared to Bluetooth, claims NuCurrent and there are is added flexibility for siting, with options for power transfer through a variety of materials (e.g. metal, tissue).

NuCurrent supplies developers with wireless power technologies and product integration expertise. Core technologies span magnetics, software and systems simulation. The company has generated over 150 patents granted and pending globally. It also offers internal tools to enhance speed to market, improve product performance and mitigate major development risks. The company says that its systems integration expertise supports manufacturers of appliances, smartphones, wearables, hearables, consumer electronics, medical devices, robotics, IoT, sporting equipment and other emerging product categories.

NuCurrent solutions are based on inductive and inductive resonant wireless power transfer which offers convenience, safety, efficiency, and enhanced user experience.

http://www.nucurrent.com

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Microcontroller platform protects OTA firmware update security for IoT devices

Thu, Mar 25, 2021

A collaboration between Winbond, Nuvoton and Qinglianyun has resulted in a cloud-to-device platform to implement secure over the air (OTA) firmware updates in IoT devices.

Memory provider, Winbond Electronics, microcontroller manufacturer, Nuvoton, and security software developer, Qinglianyun have introduced a fully integrated reference design secured from the cloud to the device’s code storage memory.

The reference design provides a proven way to implement secure firmware updates on a secure and certified hardware and software, said the partners, to reduce the time it takes to develop new IoT devices. It can also help OEMs get to market faster with products for smart city, smart home, metering, industrial control, and other security-conscious applications.

The reference design is based on the Nuvoton M2351SF IoT security microcontroller, a multi-chip module consisting of the M2351 IoT security microcontroller and Winbond’s W77Q TrustME secure flash memory IC. The M2351 microcontroller is based on the Arm Cortex-M23 secure processor core with TrustZone technology. The module’s W77Q secure flash device is connected to the M2351 via an encrypted serial peripheral interface which resists sniffer attacks on data transferred between the two chips.

To provide a trusted execution environment (TEE) for secure OTA firmware updating operations and communications with the cloud, the M2351 runs Qinglianyun’s TinyTEE secure software stack in TrustZone-protected hardware. Using the 32Mbit secure storage provided by the W77Q, the reference design provides storage of secure and non-secure firmware and data, authenticated access control to ensure the integrity of firmware and data and rollback protection.

The TinyTEE software on the M2351 connects to Qinglianyun’s secure cloud service, which provides a full suite of IoT device management capabilities, such as device authentication, secure storage, encryption engine, and true random number generator, to comply with a Global Platform TEE standard interface.

This provides a secure chain of trust for the provision of OTA firmware updates from the cloud to the W77Q memory, with no vulnerability to remote attack or exposure of private data, added Winbond.

The W77Q helps ensure robust, end-to-end security in IoT devices by enabling secure storage, secure boot and root of trust, authenticated and encrypted data transfer between the flash device and the host, secure execute in place (XiP) of boot and application code and system resilience, by supporting the key security functions of protection, detection and recovery.

The M2351 microcontroller also offers secure bootloader, hardware cryptographic accelerators, execute-only memory and tamper detection pins

http://www.winbond.com

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SiTime enhances SiT8008 MEMS oscillator; multiples configuration options

Thu, Mar 25, 2021

Announcing that the SiT8008 low power MEMS oscillator can now operate between 1.62 and 3.63V, SiTime says the enhanced device can accelerates time to revenue, while simplifying inventory management for industrial and medical electronics development.

In addition to the expanded voltage range, the popular SiT8008 MEMS oscillator also includes additional programmable features such as frequency and drive strength programmability. The SiT8008 offers millions of possible configurations, adds SiTime. For example, industrial and medical applications such as factory automation, seismic sensing, and data acquisition all use many clock sources in a single system. These applications can benefit from its programmable features.

The MEMS oscillator is available from Digi-Key with short lead times. “Digi-Key is excited to offer additional value to our customers with custom programmed MEMS timing solutions from SiTime,” said David Stein, vice president of global supplier management at Digi-Key Electronics. “Customers can now order a continuous voltage option of the popular . . . SiT8008, programmed and [shipped] in as little as 48 hours,” he continued. The continuous voltage feature reduces qualification requirements across a customer’s various applications, enabling faster time-to-market, added Stein.

“Traditional oscillators are usually configured for specific frequencies and operation at one of 1.8, 2.5, or 3.3V voltages. Each configuration then requires a separate component qualification and will need to be stocked in inventory,” explained Piyush Sevalia, executive vice president of marketing at SiTime. “On the other hand . . . with the SiT8008 . . . if a customer uses multiple oscillator configurations, only one component qualification is required, reducing the time burden on valuable engineering resources. The SiT8008’s ability to operate at any voltage between 1.62V and 3.63V further simplifies system design – a customer can choose the voltage rail already available in the system rather than design a new one, which can also reduce component count.”

Along with continuous voltage operation, the SiT8008 also offers industry-leading resilience and reliability, a wide programmable frequency range with six decimals of accuracy, low power consumption, small package size, and short lead times, said SiTime.

Parts are available for sampling and in low-volume production quantities from Digi-Key now.

http://www.sitime.com

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Renesas addresses network synchronisation for 4G/5G radio

Wed, Mar 24, 2021

Communication timing options from Renesas Electronics now include three low phase noise, high frequency RF timing devices for 4G and 5G radio. The 8V19N850 radio synchroniser and 8V19N880, 8V19N882 JESD204B/C clock jitter attenuators deliver ITU-T-compliant network clock synchronisation. They are also claimed to have best-in-class phase noise and high clock frequency.

The 8V19N850 radio synchroniser is claimed to be the industry’s first integrated 5G radio synchronisation device. It is equipped with a complete set of features for radio synchronisation on a single chip, including full ITU-T G.8273.2 T-BC/T-TSC Class C, ITU-T G.8262.1 enhanced SyncE, and JESD204B/C compliance. The 8V19N850 also takes care of recovering the clock from CPRI/eCPRI, per IEEE 802.1cm front haul synchronisation requirements, making it suitable for use in emerging 5G O-RAN networks for radio units (O-RU).

The 8V19N880 and 8V19N882 JESD204B/C clock jitter attenuators deliver low phase noise. They offer jitter performance as low as 74fs RMS and -90dB spurious attenuation for mission-critical industrial data converter applications in wireless radio, test and measurement, instrumentation, and high performance imaging. They support frequencies up to 3932.16MHz (up to 6GHz with an external VCO) and feature 16 and 18 integrated differential outputs with low power consumption and 1.8V support.

The devices are also featured in Renesas’ two Winning Combinations, designed to address increasing demand for higher bandwidth for cellular services. The Small Cell Radio and MIMO Radio Combinations use mutually compatible devices for lower risk and faster time to market. They also showcase the combined benefits of the new RF timing ICs paired with Renesas’ complementary microcontroller and power management offerings to accelerate solution design.

The 8V19N850, 8V19N880 and 8V19N882 RF timing ICs are available now.

Renesas Electronics delivers semiconductors that enable billions of connected, intelligent devices to enhance the way people work and live. Its portfolio includes microcontrollers, analogue, power, and SoC products, for a broad range of automotive, industrial, Infrastructure, and IoT applications.

http://www.renesas.com

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NuCurrent cuts loose by extending HF wireless charging

Microcontroller platform protects OTA firmware update security for IoT devices

SiTime enhances SiT8008 MEMS oscillator; multiples configuration options

Renesas addresses network synchronisation for 4G/5G radio

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