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Power Factor Controllers | FAN6921MR

mWSaver鈩� Power Factor Controller (PFC) CrCM + QR PWM Controller, Brown Out Protection

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Overview

The highly integrated FAN6921MR combines Power Factor Correction (PFC) controller and Quasi-Resonant PWM controller. Integration provides cost effect design and allows for fewer external components.
For PFC, FAN6921MR 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, FAN6921MR can reduce input current distortion at zero-crossing duration to improve THD performance.
For PWM, FAN6921MR provides several functions to enhance the power system performance: valley detection, green-mode operation, high / low line over power compensation. FAN6921MR provides many protection functions as well: secondary-side open-loop and over-current with auto recovery protection, external latch triggering, adjustable over-temperature protection by RT pin and external NTC resistor, internal over-temperature shutdown, VDD pin OVP, and DET pin over-voltage for output OVP, and brown-in / out for AC input voltage UVP.
The FAN6921MR controller is available in a 16-pin small outline package (SOP).

  • AC-DC Merchant Power Supply
  • 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碌s for QR PWM Stage
  • Internal 10ms Soft-Start for PWM
  • Brownout Protection
  • High / Low Line Over-Power Compensation
  • Auto-Recovery Over-Current Protection
  • Auto-Recovery Open-Loop Protection
  • Externally Latch Triggering (RT Pin)
  • Adjustable Over-Temperature Latched (RT Pin)
  • VDD Pin and Output Voltage OVP (Latched)
  • Internal Over-Temperature Shutdown (140掳C)

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FAN6921MRMY

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Obsolete

CAD Model

Pb

A

H

P

SOIC-16

751BG

3

260

REEL

2500

N

CrCM/BCM

Variable

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30

550 / 700

18

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