Good day to everyone!
I'm trying to build a project in witch a positive triangle wave (V high about 6V, V low about 3V) is to be switched on different loads. The problem I am seeing is that when using a MOSFET, there is a lot of current going through it at about 500KHz (the maximum frequency I need). I created a small test scenario in the simulator:
The simulation results are the following:
As we can see, there is quite some current going through the turned OFF transistor.
So, my questions are: Is this a problem related to the body diode (drain-source capacitance)? If it is so, is there a way to make such a circuit work, without current coupling through the transistor? Finally, is there some other topology/ device that may be used to completely decouple the load from ground?
Thanks in advance for all the help!
I'm trying to build a project in witch a positive triangle wave (V high about 6V, V low about 3V) is to be switched on different loads. The problem I am seeing is that when using a MOSFET, there is a lot of current going through it at about 500KHz (the maximum frequency I need). I created a small test scenario in the simulator:
The simulation results are the following:
As we can see, there is quite some current going through the turned OFF transistor.
So, my questions are: Is this a problem related to the body diode (drain-source capacitance)? If it is so, is there a way to make such a circuit work, without current coupling through the transistor? Finally, is there some other topology/ device that may be used to completely decouple the load from ground?
Thanks in advance for all the help!