ICs & Semiconductors

Charger IC is wireless power transfer-compatible

Tue, May 31, 2022

A multi-functional, compact charging IC for lithium-ion (Li-ion) batteries, the XC6810, supports wireless power transfer.

Available from Torex Semiconductor, the XC6810 series of charging ICs for Li-ion batteries are suitable for wearables, hearables or IoT devices. Functions include charge and discharge control as well as wireless power supply support. 

Charging current is 1.0 to approximately 25mA, making it suitable for small Li-ion batteries. The ICs can provide a wide charging range of 3.8 to 4.4V.The XC6810 series are equipped with shutdown function to suppress battery discharge when stored or not in use as well as a wake-up function, activated using an external push button, to extend the life of batteries and devices. 

In addition to the conventional LED-driven display, a terminal indicates the charging status, showing charging level by frequency. It also supports charging monitoring using a microcontroller. 

The XC6810 is equipped with a battery voltage monitoring function, which can directly monitor the battery voltage through a microcontroller, or a low battery voltage notification function. 

The wide input voltage range of 3.5 to 28V supports wireless power and energy harvester charging, confirmed Torex. For contact-type charging using a cradle, for example, one version has a terminal which modulates the power supply line for the charging status to be notified by two-wire communication. The charging status and charging control can be displayed through the cradle. 

Torex Semiconductor provides CMOS power management ICs for battery powered and energy efficient applications. The company specialises in CMOS analogue technology, with LDO voltage regulators, voltage detectors and DC/DC converters in its product portfolio.

http://www.torexsemi.com

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Infineon combines Airoc Wi-Fi / Bluetooth in Nvidia Jetson for edge AI

Mon, May 30, 2022

Airoc Wi-Fi and Bluetooth connectivity provides Wi-Fi 6 / 6E and low power wi-Fi 5 connectivity to Nvidia’s Jetson system on modules (SoMs) for developers to accelerate artificial intelligence (AI) -enabled edge devices.

AI at the edge devices require reliable and instant Wi-Fi cloud connectivity for lifecycle management functions like deploying AI models through over the air (OTA) updates.

“In congested network environments, AI devices often encounter disconnections or low-data throughput, leading to poor user experience, explained Infineon. The Airoc Wi-Fi family delivers low latency, robust connectivity and high data throughput streaming, said Sivaram Trikutam, vice president, Wi-Fi product line at Infineon. 

The Wi-Fi will be used for AI applications which require real time blending effects from live action to computer-generated images or videos, such as gaming and AR / VR (augmented reality / virtual reality) in industry applications. In these applications, high-throughput and low-latency wireless transmissions are critical and require simultaneous processing and streaming of data. Infineon said its Wi-Fi 6E solution, operating in the 6.0 to 7.0GHz band, minimises latency and prevents interruptions due to congested wireless networks. This is combined with the fast processing power of the Nvidia Jetson platform for AI-enabled devices in, for example, robotics, smart cities, healthcare, industrial, retail, energy and agriculture where processing in the cloud is blended with edge processing.

The Airoc CYW4373, CYW5459x and CYW5557x are available to design now. The Nvidia Jetson compute platform is claimed to be the leading AI at the edge compute platform with over one million developers. With pre-trained AI models, developer software development kits and support for cloud-native technologies across the full Jetson line up, intelligent machine manufacturers and AI developers can build and deploy software defined features on embedded and edge devices.

http://www.infineon.com

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Authenticator protects against counterfeiting with ECDSA and 1-Wire interface

Fri, May 27, 2022

To detect and protect products from counterfeiting or misuse, Analog Devices has introduced the DS28E30, a 1-Wire ECDSA secure authenticator. 

The authenticator combines a fixed-function cryptographic toolbox based on the industry standard FIPS 186 elliptic curve digital signature algorithm (ECDSA) with secure storage of keys and application data and the single-contact 1-Wire interface for minimal interconnect requirement. Authentication is based on challenge/response sequences. Analog Devices said that the authenticator is easy to integrate into new or existing designs.

The DS28E30 provides secure features to enable the use of limited life tools, sensors, and other peripherals. Features include a monotonic, non-resettable, decrement-only counter and 1kbit of general-purpose EEPROM. It can optionally be ECDSA protected to store application data including end-product life cycle information.

The DE28E30 has a wide operating range of 1.62 to 5.25V and a temperature range of  -40 to +85 degrees C.

The authenticator is supplied in a four-ball WLP with a 0.5mm pitch and measuring 1.2mm x 1.4mm. It is in full production and available now.

Analog Devices offers a suite of analogue and mixed signal, power management, radio frequency (RF), and digital and sensor technologies with more than 75,000 products in the industrial, communications, automotive, and consumer markets. ADI is headquartered in Wilmington, Massachusetts, USA.

http://www.analog.com

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Transmitter controller IC is Qi v1.3.2-certified for wireless charging

Thu, May 26, 2022

At Computex in Taipei, Taiwan this week, Infineon has introduced the WLC integrated and scalable wireless charging platform. 

The WLC1115 transmitter controller IC is the first product of the WLC family of controllers for inductive wireless charging. Infineon has also introduced an accompany Qi v1.3.2 certified MP A11 power transmitter reference design. The IC can be used for wireless charging in a variety of consumer devices, such as smartphones, smart speakers, docking stations and monitor stands, as well as industrial or healthcare accessories.

The WLC1115 transmitter controller IC and companion reference design for wireless charging can be used for a wide range of consumer and industrial applications that demand state-of-the-art Qi-standard compliance, explained Ajay Srikrishna, senior vice president and general manager of the Wired Connectivity Solutions product line at Infineon. “As inductive wireless charging standards evolve, our programmable solution will offer the flexibility to scale higher power levels and allow OEMs to materialise differentiated features while remaining Qi-compatible,” he added.

Infineon’s WLC1115 integrated, Qi-compliant, configurable 15W transmitter controller IC includes a USB-PD/PPS sink, DC/DC controller, gate drivers for DC/DC, a full-bridge inverter, sensing peripherals and configurable flash memory. It supports a wide input voltage range (4.5 to 24V), multi-path voltage- and current-based ASK (amplitude shift keying) demodulation. It also features an integrated, programmable, high-side current-sense amplifier and adaptive foreign object detection (FOD) via Q-factor, resonant frequency and power loss.Protection features for under-voltage lockout (UVLO), over-voltage protection (OVP), over-current protection (OCP) and over-temperature protection (OTP) are programmable.

The WLC1115-based Extended Power Profile (EPP) transmitter uses Optiga Trust Charge to meet the authentication requirements specified in the Qi v1.3.2 standard.

Infineon also provides software tools that support Qi v1.3.2 and proprietary charging protocols.

The Infineon WLC1115 transmitter controller IC is available now. 

Infineon is presenting at Computex (24 to 27 May 2022) in Taipei, Taiwan. Visit Infineon at Computex, Hall 1 – 412.

http://www.infineon.com

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