I have two NMOS MOSFETs in a half-bridge configuration
The problem is that they need to drive the load from -10V to +15V. See the attached schematic
Therefore they are both high side MOSFETs and I need to drive them with an isolated supply from say -5V to +5V (also the control signal has to be isolated)
Can anyone explain how I can do this with discrete components, for example using NPN/PNP transistors?
I have tried the circuit from this blog but it never works properly in LTspice. The MOSFETs take way too long to turn off (like 100us) and they only have 0.69n of gate capacitance.
The problem is that they need to drive the load from -10V to +15V. See the attached schematic
Therefore they are both high side MOSFETs and I need to drive them with an isolated supply from say -5V to +5V (also the control signal has to be isolated)
Can anyone explain how I can do this with discrete components, for example using NPN/PNP transistors?
I have tried the circuit from this blog but it never works properly in LTspice. The MOSFETs take way too long to turn off (like 100us) and they only have 0.69n of gate capacitance.
Attachments
-
13.6 KB Views: 5