Plecto
Full Member level 5
I'm designing a class D amplifier for a work related project. One of the key parameters are low quiescent current and I've figured out that the type of N-ch mosfet used is by far the biggest factor. I've been looking at mosfets with as low as possible total gate charge, and input and output capacitance, but are there other parameters that will influence the quiescent current? I'm also wondering what the difference between input capacitance and total gate charge is? I thought the input capacitance could be calculated by dividing the given gate charge by the specified gate voltage, but that doesn't seem to be the case.