LED Flyback Control IC

International Rectifier offers their LED Flyback control IC

Image of International Rectifier's LED Flyback Control ICThe IRS2983 is a fully-integrated, fully-protected, SMPS control IC designed to drive Flyback converter LED drivers. The IRS2983 features include primary-side-power regulation, which allows a basic converter to be implemented without the need for an opto-isolator in a Flyback LED driver with a fixed load, enabling a low-cost, high-reliability, isolated LED driver design to be realized. The IRS2983 may also be used in converters that do include secondary feedback through an opto-isolator. Another feature of the IRS2983 includes a high-voltage startup, enabling VCC supply to be derived initially from the high-voltage DC bus until the auxiliary inductor winding is able to take over. The IRS2983 operates in critical conduction (CrCM) or discontinuous (DCM) modes and is fully-protected against open- and short-circuit, as well as inductor saturation. The IRS2983 may be used in single-stage Flyback LED drivers with an unsmoothed DC bus to obtain high power factor and low THD.

  • Flyback LED driver
  • Critical-conduction/transition mode operation
  • Primary constant power control
  • Burst-mode operation at light load
  • Over-current protection
  • Micropower startup (150 A)
  • Low quiescent current (2.5 mA)
  • Latch immunity and ESD protection
  • Open-load, over-voltage protection
  • Noise immunity
LED Flyback Control IC
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Publicado: 2014-01-08