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FAN4800 Datasheet Low Start-Up Current PFC/PWM Controller Combos

Manufacturer: Fairchild (now onsemi)

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General Description

The FAN4800 is a controller for power-factor-corrected, switched-mode power supplies.

Power Factor Correction (PFC) allows the use of smaller, lower-cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully complies with IEC-1000-3-2 specifications.

Intended as a BiCMOS version of the industry-standard ML4800, the FAN4800 includes circuits for the implementation of leading-edge, average-current, boost-type power factor correction and a trailing-edge Pulse Width Modulator (PWM).

Overview

FAN4800 — Low Startup Current PFC/PWM Controller Combinations November 2010 FAN4800 Low Startup Current PFC/PWM Controller.

Key Features

  • Low Startup Current (100µA Typical).
  • Low Operating Current (2.5mA Typical).
  • Low Total Harmonic Distortion, High Power Factor.
  • Pin-Compatible Upgrade for the ML4800.
  • Average Current, Continuous or Discontinuous Boost, Leading-Edge PFC.
  • Slew Rate Enhanced Transconductance Error Amplifier for Ultra-Fast PFC Response.
  • Internally Synchronized Leading-Edge PFC and Trailing-Edge PWM.
  • Reduction of Ripple Current in the Storage Capa.

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