mobile | classic
Dataweek Electronics & Communications Technology Magazine





Follow us on:
Follow us on Facebook Share via Twitter Share via LinkedIn


Search...

Electronics Buyers' Guide

Electronics Manufacturing & Production Handbook 2019


 

Adaptive LED current ripple suppressor
26 June 2019, Power Electronics / Power Management

Diodes Incorporated announced the availability of the AL5822 LED current ripple suppressor, which provides high levels of ripple suppression while maintaining high power factor for commercial and industrial lighting applications.

It is now mandatory to meet regulatory requirements to suppress low-frequency ripple (100 Hz to 120 Hz) in LED lighting applications in many markets. The AL5822 delivers a high level of ripple current suppression in single-stage, high-power LED installations, even when triac or PWM dimming techniques are being used to vary the light level. This ensures there is no sign of flicker or strobing across the entire dimming range, while still maintaining a high power factor.

The AL5822 has been designed and tested to comply with the Title 24 building code requirement of less than 30% flicker. The results show that the AL5822 suppresses over 97% of ripple while still achieving a power factor of greater than 0,9.

By monitoring the current flowing through the LEDs, the AL5822 compensates for ripple by adjusting the drive voltage for the external MOSFET. This control loop keeps the MOSFET operating in the saturation region to deliver a constant current.

With support for various pre-stage circuits, the AL5822 can work with a number of drivers, such as the AL1665 single-stage PFC flyback buck/boost controller, also from Diodes Incorporated. The integrated features of the AL5822 remove the need for magnetic discrete components, minimising the overall bill of materials.

The AL5822 operates over an input voltage range of 24 to 305 V a.c. Safety features include LED short-circuit, over-temperature, and over-current protection.

For more information contact Dirk Venter, Altron Arrow, +27 11 923 9600, dventer@arrow.altech.co.za


Credit(s)
Supplied By: Altron Arrow
Tel: +27 11 923 9600
Fax: +27 11 923 9884
Email: info@arrow.altech.co.za
www: www.altronarrow.com
  Share on Facebook Share via Twitter Share via LinkedIn    

Further reading:

  • DC UPS for DIN-rail mounting
    31 July 2019, Vepac Electronics, Power Electronics / Power Management
    The Effecta DCH series power supplies with UPS function are suitable for a variety of applications, and their robust IP 20 housing is applicable for all DIN-rail applications. With its power boost mode, ...
  • FPGA video and image processing ecosystem
    26 June 2019, Altron Arrow, Programmable Logic
    Microchip Technology, via its Microsemi subsidiary, announced its Smart Embedded Vision initiative that provides solutions for designing intelligent machine vision systems with Microchip’s low-power PolarFire ...
  • 80 V buck driver for LEDs
    26 June 2019, Altron Arrow, Power Electronics / Power Management
    Infineon Technologies’ new LED driver, the ILD8150/E, features an innovative hybrid dimming mode technology for achieving 0,5 percent of the target current. With its supply voltage range from 8 V up to ...
  • AC-DC power supplies for medical devices
    26 June 2019, Vepac Electronics, Power Electronics / Power Management
    XP Power has announced two new ranges of AC-DC power supplies that provide BF class insulation for healthcare applications where ehnanced EMC performance is a key requirement. The PBR500 and PBR650 ...
  • N-channel enhancement mode FET
    26 June 2019, Electrocomp, Power Electronics / Power Management
    Diotec Semiconductor’s 2N7002 is a widely used small-signal MOSFET in SOT-23 package. With an RDS(on) of maximum 2 Ω, the component offers a lower on-state resistance than the common industry standard. ...
  • Digitally controlled power supply
    26 June 2019, Vepac Electronics, Power Electronics / Power Management
    XP Power’s nanofleX series of configurable, modular, digitally controlled AC-DC power supplies is constructed in a compact, low-profile 1U mechanical chassis format that suits today’s space constrained ...
  • DC-DC power module reference design
    31 July 2019, Würth Elektronik eiSos, Power Electronics / Power Management
    MagI³C power modules from Würth Elektronik are DC-DC converters with integrated controller IC, inductors and capacitors. With the new MagI³C power supply reference design, the manufacturer aims to demonstrate ...
  • Fingerprint sensor module
    31 July 2019, Altron Arrow, Computer/Embedded Technology
    The One Touch Access 100-USB from NEXT Biometrics is a high-quality, bezel-less USB fingerprint area sensor module designed for integration into custom application products such as notebooks, tablets, ...
  • Analog Devices explores use-cases for wearable devices
    31 July 2019, Altron Arrow, News
    In general, it is not just about exercising more or better nutritional intake – there is more interest in monitoring certain vital body parameters. This is the reason why companies in the smart watch ...
  • Debugging probe for STM32 MCUs
    31 July 2019, Altron Arrow, Test & Measurement
    The STLINK-V3MINI probe, new from STMicroelectronics, combines the features of the STLINK-V3SET with standalone simplicity for faster programming and ease of use. The compact, portable probe can be ...
  • High-speed fuses to protect critical power electronics
    31 July 2019, Altron Arrow, Circuit & System Protection
    Littelfuse high-speed (semiconductor) fuses protect critical power electronics from over-currents that may cause damage to electronic equipment. The company’s high-speed fuses are reliable, very fast-acting ...
  • PCIe clock buffers
    31 July 2019, Altron Arrow, Analogue, Mixed Signal, LSI
    Microchip Technology announced four new 20-output differential clock buffers that exceed PCIe (PCI Express) Gen 5 jitter standards for next-generation data centre applications. The ZL40292 (85Ω termination) ...

 
 
         
Contact:
Technews Publishing (Pty) Ltd
1st Floor, Stabilitas House
265 Kent Ave, Randburg, 2194
South Africa
Publications by Technews
Dataweek Electronics & Communications Technology
Electronics Buyers’ Guide (EBG)

Hi-Tech Security Solutions
Hi-Tech Security Business Directory

Motion Control in Southern Africa
Motion Control Buyers’ Guide (MCBG)

South African Instrumentation & Control
South African Instrumentation & Control Buyers’ Guide (IBG)
Other
Terms & conditions of use, including privacy policy
PAIA Manual





 

         
    Classic | Mobile

Copyright © Technews Publishing (Pty) Ltd. All rights reserved.