Product category:
Power Supply ICs and Controllers
News Release from: International Rectifier | Subject: IRS2168D
Edited by the Electronicstalk Editorial
Team on 12 February 2007
Ballast chip simplifies multiple-lamp
circuits
High-voltage IC integrates PFC, ballast control and 600V half-bridge driver in a compact 16-lead SO package.
International Rectifier has introduced the IRS2168D fully integrated and protected high-voltage integrated circuit (HVIC) for advanced electronic linear fluorescent lamp ballasts that incorporate active power factor correction (PFC) The new IC integrates PFC, ballast control and 600V half-bridge driver in a compact 16-lead SO package and features a wide range input voltage PFC to simplify complex multiple-lamp circuits offering a fault counter on the current-sense pin for multiple-lamp ballasts and cycle-by-cycle protection on the PFC side for high reliability
This article was originally published on Electronicstalk on 15 Feb 2001 at 8.00am (UK)
Related stories
1kV rad-hard power MOSFET saves satellite space
International Rectifier has introduced the world's first 1000V radiation-hardened power MOSFET.
MOSFETs improve 12V-input converter efficiency
Two new 20V HEXFET power MOSFET families from International Rectifier are designed to increase efficiency by up to 4% in 12V-input DC/DC convertors.
In addition to integrating many features for maximum programmability and protection, the IRS2168D provides a wide range input to address the challenge of designing complex multiple-lamp electronic ballast circuits, rounding out IR's portfolio of nondimmable fluorescent ICs.
The IRS2168D's PFC circuitry provides a high power factor (PF) of 0.995, low total harmonic distortion (THD) of less than 10% and DC bus regulation within a tolerance of +/-2.5%.
The IC has many programmable features including those for pre-heat time, pre-heat frequency, run frequency, and ignition ramp.
Protection features are provided for half-bridge overcurrent, PFC overcurrent, lamp failure-to-strike, and filament failures in addition to other protection features such as closed-loop ignition current regulation, DC bus under-voltage reset and an automatic restart function.
The IC also features an integrated bootstrap diode, fixed internal 1.6us half-bridge deadtime, voltage-controlled oscillator (VCO), end-of-life window comparator pin, lamp removal/autorestart shutdown pin and an internal 15.6V Zener diode clamp on Vcc.
IR's new ballast control IC uses IR's advanced high-voltage IC process which incorporates next-generation high-voltage level-shifting and termination technology to deliver superior electrical over-stress protection and higher field reliability.
• International Rectifier: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
