KwangHeon
Newbie level 3
I'm studing the flyback smps circuit.
As far as I know, the primary side snubber circuit is required for the protection of switching MOSFET.
Calculation of the values of capacitor and resistor is headache for me.
How about using a diode (like 1N4005 or 1N4006 just below the break down voltage of MOSFET) between the drain and source of MOSFET instead of snubber?
It does not require any calculations.
But I haven't seen any schematic of this kind.
What's the problem with this diode only simple circuit?
As far as I know, the primary side snubber circuit is required for the protection of switching MOSFET.
Calculation of the values of capacitor and resistor is headache for me.
How about using a diode (like 1N4005 or 1N4006 just below the break down voltage of MOSFET) between the drain and source of MOSFET instead of snubber?
It does not require any calculations.
But I haven't seen any schematic of this kind.
What's the problem with this diode only simple circuit?