Hi,
i'm designing and realizing on prototypal board the class d amplifier in figure below
the problem is that the Infineon MOSFETS become too hot beyond the calculations that I made, also without load and with lower voltage than i need. Also they present 100ns of miller plateau at which the measured current on high side mosfet drain is of any amperes.
I test many mosfets and they all have the same problem maybe less pronounced.
The only one that doesn't have that kind of dissipation issue is International Rectifier mosfet in figure.
What do you think? Is it a bad driving or parasitic components of other mosfets?
I'm looking for a mosfet with lower Rds in order to increase output power...
Could you help me?
Thanks
i'm designing and realizing on prototypal board the class d amplifier in figure below
the problem is that the Infineon MOSFETS become too hot beyond the calculations that I made, also without load and with lower voltage than i need. Also they present 100ns of miller plateau at which the measured current on high side mosfet drain is of any amperes.
I test many mosfets and they all have the same problem maybe less pronounced.
The only one that doesn't have that kind of dissipation issue is International Rectifier mosfet in figure.
What do you think? Is it a bad driving or parasitic components of other mosfets?
I'm looking for a mosfet with lower Rds in order to increase output power...
Could you help me?
Thanks