Hi,
I am reading the datesheet of UC2842A. I understood that it is PWM controller. I understood the working of Flyback controller ( attached block diagram http://www.ti.com/lit/an/slva059b/slva059b.pdf or image attached in this thread ).
I saw even the calculations also in the datasheet.
Frequency in the design file F = (1.72/(Rt*Ct)). I understood Undervoltage lockout, Oscillator section.
Questions :
1.Could please explain the design on high level how it is working ? ( I don't need how the values of Resistor and capacitor has been arrived. I want to know the working functionality in detailed way)
2.Can I get any Simulation model for the design file attached from the Webench ? ( for my specifications --- VinMin = 240.0V VinMax = 480.0V Vout = 24.0V Iout = 3.0A )
3. Could Explain in detailed way of this working ?
4. In our design three phase input 480V . The rectification process is done with three phase rectifier diode. The rectified voltage output from this range Can I keep the same circuit after Dac ( full bridge rectifier diode in Design14.pdf ). Should I change any voltage ratings of the discrete or what ?
Design file is attached.
