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FAN6921BMR - PWM Controller

General Description

The highly integrated FAN6921BMR combines Power Factor Correction (PFC) controller and Quasi

Resonant PWM controller.

Integration provides cost effect design and allows for fewer external components.

time technique to provide a regulated DC ou

Key Features

  • Integrated PFC and Flyback Controller.
  • Critical Mode PFC Controller.
  • Zero.
  • Current Detection for PFC Stage.
  • Quasi.
  • Resonant Operation for PWM Stage.
  • Internal Minimum tOFF 8 ms for QR PWM Stage.
  • Internal 10 ms Soft.
  • Start for PWM.
  • Brownout Protection.
  • High / Low Line Over.
  • Power Compensation.
  • Auto.
  • Recovery Over.
  • Current Protection.
  • Auto.
  • Recovery Open.

📥 Download Datasheet

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Full PDF Text Transcription (Reference)

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DATA SHEET www.onsemi.com Integrated Critical Mode PFC and Quasi-Resonant Current Mode PWM Controller FAN6921BMR Description The highly integrated FAN6921BMR combines Power Factor Correction (PFC) controller and Quasi−Resonant PWM controller. Integration provides cost effect design and allows for fewer external components. For PFC, FAN6921BMR uses a controlled on−time technique to provide a regulated DC output voltage and to perform natural power factor correction. With an innovative THD optimizer, FAN6921BMR can reduce input current distortion at zero−crossing duration to improve THD performance. For PWM, FAN6921BMR provides several functions to enhance the power system performance: valley detection, green−mode operation, high / low line over power compensation.