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JADAK offers UHF RFID smart module for OEMs ••• Identiv, NXP Semiconductors collaborate on NFC inlay for Internet of Things ••• KLAS Research honors CenTrak for its RTLS offerings ••• Cisco intros new switches, router for IoT environments ••• Dartford and Gravesham NHS Trust reduces hospital readmissions via remote patient monitoring ••• STMicroelectronics unveils energy-efficient step-down converters for IoT devices ••• Decawave provides secure mobile transactions for consumer devices via UWB chipsets ••• Industrial Internet Consortium, Openfog Consortium unite ••• NFC Forum signs IoT liaison agreement with AIM, expands automotive partnership with JasPar.
STMicroelectronics Unveils Energy-Efficient Step-Down Converters for IoT Devices
STMicroelectronics has announced that its ST1PS01 step-down converters are engineered for low-quiescent current and high efficiency, to help companies save energy with point-of-load supplies and Internet of Things (IoT) devices, such as asset trackers, wearables, smart sensors and smart meters.
Leveraging synchronous rectification, the device provides efficiency of 92 percent at 400mA full load and 95 percent when delivering 1mA, the company reports. Its design features keep the quiescent current to 500nA and include a low-power voltage reference. It comes with a pulse-frequency counter for controlling converter current at light load, with two high-speed comparators to help minimize output ripple.
The input-voltage range is from 1.8 to 5.5 volts, increasing flexibility for designers by allowing various battery chemistries or configurations, as well as extending runtime as the battery discharges. ST1PS01 regulators are suitable for devices powered from energy-harvesting systems and feature a low noise-architecture that allows use in noise-sensitive applications.
An evaluation board, model STEVAL-1PS01EJR, helps developers to utilize the ST1PS01's high energy efficiency and feature integration, according to the company. The ST1PS01 regulators are now in full production, packaged as 400µm-pitch flip-chip devices measuring 1.11 millimeters by 1.41 millimeters (0.04 inch to 0.06 inch), and are priced from $0.686 for orders of 1,000 pieces.
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