I created this circuit as general purpose MOSFET driver circuit for PWM frequency up to 10KHz (usually from microcontrollers):
But R3 and R5 are getting hot soon as I connect 5V supply and I did not connect PWM signal line (means that is floating). Could somebody please explain why? and what would be good values for resistors R3, R4 and R5?
They are 0805 resistors and SOT23 BJTs. Components are closer and hand soldered by me. Earlier I had experimented same circuit with normal through hole 1/4 watt resistors and TO-92 BJTs and I did not notice the heating problem that time.
I took this circuit from enter link description here, figure 4.
Thanks in Advance.