Hello forum. I am designing a 90v 4.5A pwm. In a preliminary test I used three tip35c directly with an arduino with the motor without load and it works. Now to add load I want to make a good circuit to manage four tip35c, for that I took the minimum gain in the datasheet as 15 and each transistor with 1.125A of maximum current so the base current is 75mA. Could I use a single PNP transistor to manage all four tip35s or do I have to use one PNP transistor for each tip35? Attached is the circuit that I had planned to do.
I thank you for your collaboration and other recommendations.
I thank you for your collaboration and other recommendations.