FAN6921BMR Datasheet | onsemi

Description The highly integrated FAN6921BMR bines Power Factor Correction (PFC) controller and Quasi- Resonant PWM controller. Integration provides cost effect design and allows for fewer external ponents. 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 pensation. 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 t OFF 8 ms for QR PWM Stage - Internal 10 ms Soft- Start for PWM - Brownout Protection - High / Low Line Over- Power pensation - 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 Plant Code &2 = 2- Digit Date Code Format &K = 2- Lot Run Traceability Code FAN6921BMRMYD= Specific Device Code...