PFC-DCM (discontinuous conduction mode) ICs

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Easy design and lowest system cost

Fully compatible with the world standard, these devices are optimized to offer extremely compact and cost effective PFC solutions for electronic ballast and off-line SMPS. By using a zero current detector for discontinuous operation mode a near unity power factor and an excellent THD are achieved. The latest addition are the TDA4863 and TDA4863-2 which are the improved versions of the active power factor controller TDA4862.

Produkte
Details

TDA4862, TDA4863 and TDA4863-2

  • IC for sinusoidal line-current consumption
  • Power factor achieves nearly 1
  • Controls boost converter as active harmonic filter for low THD
  • Start up with low current consumption
  • Zero current detector for discontinuous conduction mode
  • Output overvoltage protection
  • Output undervoltage lockout
  • Internal start up timer
  • Totem pole output with active shut down
  • Internal leading edge blanking LEB

Improvements TDA4863 and TDA4863-2 referred to TDA4862

  • Very low start up current
  • Very low comparator and multiplier offsets for universal input applications
  • High sophisticated amplifier for low distortion inteferences caused by MOSFET switching
  • More accurate overvoltage threshold
  • Higher gate drive capability (TDA4863-2 only)
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