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FAN6921BMR

ON Semiconductor
Part Number FAN6921BMR
Manufacturer ON Semiconductor
Description PWM Controller
Published Nov 7, 2022
Detailed Description DATA SHEET www.onsemi.com Integrated Critical Mode PFC and Quasi-Resonant Current Mode PWM Controller FAN6921BMR Descr...
Datasheet PDF File FAN6921BMR PDF File

FAN6921BMR
FAN6921BMR

Overview
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.
FAN6921BMR 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 p i n O V P, a n d D E T p i n o v e r −v o l t a g e f o r o u t p u t O V P, and brown−in / out for AC input voltage UVP.
The FAN6921BMR controller is available in a 16−pin small outline package (SOP).
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−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°C) • This is a Pb−Free Device Applications • AC/DC NB Adapters • Open−Frame SMPS • Battery Charger SOIC−16 CASE 751BG MARKING DIAGRAM $Y&Z&2&K FAN6921BMR MYD $Y = onsemi Logo &Z = Assembly P...


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