drillz
Mechanical
- Sep 15, 2007
- 21
Hi,
I am driving an N-Type MOSFET in an offline flyback SMPS. At the moment , the drive circuit is as follows...
However, I believe that the gate capacitance must have a discharge path to ground to make the MOSFET switch quicker...therefore, i have dreamed up the following circuit....
I would be most grateful if readers could possibly offer any comments on this, and whether you may know of websites with better gate discharge circuits?
(Incidentally, Vout = 24V, 2A
Lp = 866uH,
Np = 80
Ns = 5.5
DC Bus = 320V
Frequency = 224KHz
Max duty cycle = 50%
This is for orders that i am getting for 24V smps for LED displays for a marquee-hire company.)
I am driving an N-Type MOSFET in an offline flyback SMPS. At the moment , the drive circuit is as follows...

However, I believe that the gate capacitance must have a discharge path to ground to make the MOSFET switch quicker...therefore, i have dreamed up the following circuit....

I would be most grateful if readers could possibly offer any comments on this, and whether you may know of websites with better gate discharge circuits?
(Incidentally, Vout = 24V, 2A
Lp = 866uH,
Np = 80
Ns = 5.5
DC Bus = 320V
Frequency = 224KHz
Max duty cycle = 50%
This is for orders that i am getting for 24V smps for LED displays for a marquee-hire company.)