In the IR2011 mosfet driver, you can use it to drive two mosfets. I'm using an NPN mosfet. I'm not sure what to do with the low side though, I won't be using it, so I think that given there is no supply and return, I can leave these not connected? I plan on just using the high side of the driver, with my NPN mosfet.
My question spawns from the possibility of electrical noise on the LIN pin, with a high HIN pin, and the expected behaviour of these. Should I tie LIN to ground?
From the mosfet driver to the gate of the mosfet, if I put the 10 ohm resistor in, I should see reduced harmonics, but is it really needed in an automotive application? What happens without it, in slow frequency applications, and high frequency applications?
As the IR2011 is noted as having a buffer on the high side, is this the same as a capacitor, or are capacitors needed, would you use capacitors if the switching frequency was low (say 1 - 20 Hz)?
Another Q: If I want a mechanical relay, without the mechanical operation failure possibility of them, a MOSFET is my only choice? (I'm guessing it is, but I've been wrong..)