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).
|Index||Product||Product & Eco Status||*Pricing||Packaging & Packing Info||**Package Marking Convention||Qualification Support||Compliance Certificates|
Green as of Dec 2009
|$1.26||SO 16L NB Details||
Line 1:$Y (Fairchild logo)
&Z (Plant Code)
&2 (2-Digit Date Code) &K
ESD (CDM) : 1250 V
ESD (HBM) : 4500 V
|AN-6920MR||Integrated Critical-Mode PFC / Quasi-Resonant Current-Mode PWM Controller FAN6920MR(795 K) 02-Apr-2013|
|AN-6204||FAN6204 - Synchronous Rectification Controller for Flyback and Forward Freewheeling Rectification(682 K) 10-Apr-2013|
|AN-6921||Integrated Critical Mode PFC / Quasi-Resonant(598 K) 05-Apr-2013|
|Application||Document Number||Featured Products||Output
|Notebook Adapter||RD-269||FAN6921ML, FAN6921MR||90W||90-264VAC||BCM Boost PFC and Quasi-Resonant Flyback Converter|