Wednesday, July 24, 2019

Active Power Factor Correction Using MC33262

This project is Active Power Factor Correction Using MC33262 

Parts list:
IC MC33262
1:12 Transformer 4.7mH (Inductance calculated by formulas)
Bridge diode
EMI filter
Ultra fast diodes UF5402(2pcs)
Capacitor 0.47uF 50v 
Capacitor 220uF 450V
MOSFET 8N50E
Resistor 100K
Resistor 22K(2pcs)
Resistor 3.3M (2pcs)
Resistor 30K 
Resistor 1.5K
Resistor 2.2R

Circuit:
Following circuit designed for 15W load, you have to calculate the resistor and inductor value using some formulas in the datasheet here: 

Active Power Factor Correction Using MC33262
Gerber File:

EeasyEDA File:

Results: 
Current waveform (yellow line) is for an LED lamp with power factor of 0.68, as you can see the current waveform become sinusoidal after using the circuit.
Active Power Factor Correction Using MC33262

Video:
For more details please watch this video