I already spend a plenty of time for understanding the design which I got from TI WEBBENCH, and gets clear bit understanding of it,but still I have some doubts, of those I want explanation.
- Why in all the designs which I see the VCC pin of the PWM controller(here in this design is UC1845AJG) is connected to aux winding of transformer as well as with the bridge rectifier output i.e. main line ? The following explanation for vcc pin I got in datasheet but I am confused with it.
What is the use of Qsc near the Vref pin ?
Provides MOSFET rating in design is vds=800v, I want to understand how it is decided ?
Why two schottky diode are used in parellel on output side?
Please point me out to the related article if these question are tool silly too answer.I am ready for more digging.
I will be very thankful to you.
EDIT1: IC i am using is UC1845AJG