ICs & Semiconductors

Dual-mode Wireless Power Consortium (WPC) Qi 1.2 and AirFuel Alliance (PMA) SR1E medium power 15W capability has been added to the Semtech TS80000 wireless charging portfolio.
The ICs support the increased battery capacity for quick charging smart phones, tablets, phablets, and medical and industrial devices.
The company’s medium power wireless charging technology can be integrated into existing portable devices as well as infrastructure and automotive applications. The TS80K devices can support both receiver and transmitter applications. The company also provides reference designs and evaluation kits to implement the technology.
Key feature are the scalability. According to the company, this is the only product on the market that supports from 100mW low power wearable solutions to 100W high power solutions for industrial tools, medical equipment and “connected” furniture applications.
Multi-mode receiver and output power from 100mW to 20W allow compatibility between all transmitters supporting any of the three industry standards.
Multi-mode transmitter for all power levels, from 100mW to 40W allow embedded charging capability in furniture, vehicles and public venues that can support all three standards based on a single, cost-effective platform, says the company.
http://www.semtech.com

Based on the iCE40 Ultra FPGA, Lattice Semiconductor offers a development platform for designing low-power wearable devices.
The FPGA uses a package that is 60% smaller than alternative microcontrollers, says the company. It also supports a low power standby mode for always-on functionality, suitable for wearables that need to operate for days between charges.
Hardware features and sensors supported include a 1.54inch display, MEMS microphone, high-brightness LED, IR LED, BLE module and 32Mbyte of flash memory. There is also support for sensors capable of measuring heart rate/SpO2, skin temperature, and pressure as well as an accelerometer and gyroscope.
The wrist watch form factor measures 1.5 x 1.57 x 0.87inches, with a wrist strap and a built in battery.
A user guide and several demos are included to showcase parallel RGB to MIPI DSI bridging, health monitor, pedometer, IR transmitter or flashlight functions.
http://www.latticesemi.com/ultrawearable

Distributor Mouser. is now stocking the ADP5301 low power, step-down regulators from Analog Devices. The company buck regulators enable designers to extend battery life in portable devices with one of the highest ultra-light-load power conversion efficiencies in the industry, claims the company.
Delivering a 90% efficiency rating and consuming only 180nA of quiescent current, the regulators are suitable for IoT applications.
The step-down regulator provides an input start-up voltage range from 2.15 to 6.5V, enabling designers to incorporate a variety of battery sources or other power sources and architectures. There is an integrated voltage supervisory function that increases overall system reliability, and output voltage is selectable from 0.8 to 5.0V through an external VID resistor and factory fuse.
Flexible power management capabilities are achieved through the user-selectable sync/mode pin. This pin allows the regulator to run between hysteresis mode and a low-noise forced PWM mode. In PWM mode, the regulator produces a lower output ripple and supplies up to 500mA of output current; in hysteresis mode it achieves excellent efficiency at a power of less than 1mW and provides up to 50 mA of output current. This switchable configuration during operation provides efficient power management to extend battery life and lower system noise requirements. Other key features include separate enabling and quick-output discharge, as well as safety features such as over-current protection, thermal shutdown, and input under-voltage lockout.
The regulators are available now in a nine-ball, 1.65 × 1.87mm WLCSP that requires less than 3.1mm² for mounting.
Target applications are IoT, including energy (gas and water) metering, wearable devices, wireless sensor networks, portable and battery-powered equipment, medical devices and keep-alive power supplies. An evaluation board, the 584-ADP5301-EVALZ, is also available through the distributor website.
http://www.mouser.com/new/Analog-Devices/adi-adp5301-regulator