FAN6921 - Fairchild

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

FAN6921
Manufacturer

Fairchild
ChipWorker Part#

CW669778566
Description

Integrated Critical Mode PFC / Quasi-Resonant Current Mode PWM Controller
Documentation

Datasheet

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FAN6921 Specifications

Attribute	Attribute Value

Part Number	FAN6921
Manufacturer	Fairchild
ChipWorker Part#	CW669778566
Documentation	Datasheet
Mounting Style	Surface Mount
Case/Package	SOP-16

Product Description

This application note presents practical step-by-step design considerations for power supply system employing Fairchild’s FAN6921 PFC/PWM combination controller, which combines a Boundary Conduction Mode (BCM) Power Factor Correction (PFC) controller and QuasiResonant (QR) PWM controller. Figure 1 shows the typical application circuit, where the BCM PFC converter is in the
front end and the Quasi-Resonant flyback converter is in the back end.

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