LED drivers supporting visible-light communication
28 July 2021Opto-Electronics
Power Electronics / Power Management
ON Semiconductor has announced two new devices designed to enhance the performance of connected lighting systems. The NCL31000 and NCL31001 LED drivers allow manufacturers to develop LED luminaires with light-based positioning technology and visible-light communication. By adding data intelligence and accurate positioning (up to 30 cm) these solutions enable smart lighting in a variety of spaces including supermarkets, warehouses, hospitals and airports.
At the heart of the NCL31000 is a highly energy-efficient buck LED driver that supports both high-bandwidth analog dimming and PWM dimming down to zero current. The driver includes an integrated 3,3 V fixed DC-DC converter and a further adjustable DC-DC converter (2,5-24 V) which can be used to power system components such as sensing devices and the microcontroller. Integrating these power solutions in the driver simplifies system design while boosting efficiency.
The accurate linear dimming enables visible-light communication (VLC), allowing for the development of indoor light-based positioning systems that can be safely implemented in many locations where RF-based solutions cannot be used (e.g. hazardous spaces such as mines or RF sensitive areas such as in hospitals or onboard aircrafts). The ability to dim to true dark with an accuracy of 0,1% ensures that there is no ghost light at the lowest dimming settings.
Highly accurate diagnostics further reduce system complexity by integrating a 10-bit analog-to-digital converter (ADC). The ADC measures system voltages, currents and temperature to monitor LED and overall system efficiency and detect any anomalies. A serial (I2C/SPI) interface makes all diagnostic data available to an external MCU that can monitor and control the intelligent lighting system. The architecture of the NCL31000 ensures excellent EMI performance – in tests it has been shown to be >14 dB below the requirements of CISPR15/EN55015.
The addition of the NCL31001 companion driver creates a solution that supports multi-string lighting applications, including those with colour control. The NCL31001 offers the same features as the NCL31000 except for the DC-DC converters to avoid unnecessary duplication.
Advanced pressure monitoring sensor EBV Electrolink
Test & Measurement
The Infineon KP497 is an advanced, highly integrated digital pressure sensor designed for demanding automotive and industrial applications, with a particular focus on battery management systems.
Read more...High-efficiency 600 V power MOSFET EBV Electrolink
Power Electronics / Power Management
The Infineon Technologies 600 V CoolMOS CFD7 is a high-voltage, super-junction N-channel MOSFET technology designed to deliver outstanding efficiency and robust switching performance.
Read more...High-performance FPGA family EBV Electrolink
DSP, Micros & Memory
AMD’s Kintex UltraScale+ FPGA family delivers high-performance, mid-range field programmable gate arrays that balance price, performance, and power efficiency for demanding DSP applications.
Read more...KIOXIA pioneer new 3D Flash technology EBV Electrolink
DSP, Micros & Memory
KIOXIA Corporation and Sandisk Corporation pioneered a state-of-the-art 3D flash memory technology, setting the industry benchmark with a 4,8 Gb/s NAND interface speed, superior power efficiency, and heightened density.
Read more...Automotive Ethernet communications EBV Electrolink
News
EBV Elektronik has expanded its automotive solutions offering with Infineon’s Marvell Automotive Ethernet portfolio.
Read more...Energy harvesting using a battery-less IoT system NuVision Electronics
Editor's Choice Power Electronics / Power Management
Energy Harvesting plays an essential role in the foundation of ambient IoT, a new generation of ultra-low power connected devices that operate by drawing energy from their environment instead of relying on traditional batteries.
Read more...Converting high voltages without a transformer Altron Arrow
Editor's Choice Power Electronics / Power Management
With appropriate power converter ICs, such as the LTC7897 from Analog Devices, many applications can be suitably powered without having to use complex and cost-intensive transformers.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version