irs2092 and different temperature of mosfet

[duramadre]

ok, 3,3k.
your value for dead time? on your schematic...

 

[nigelwright7557]

8K2 on mine.

 

[duramadre]

it is normal that if I decrease the frequency of PWM, it reduces the heat of the mosfet (in my case a MOSFET) and increases the heat of the coil?

 

[nigelwright7557]

With a higher switching frequency there are more switching states so the mosfet will get warmer.

 

[duramadre]

ok for the mosfet, but the coil behaves in the opposite way in terms of temperature, right?

 

[nigelwright7557]

ok for the mosfet, but the coil behaves in the opposite way in terms of temperature, right?

The slower the clock frequency the more the choke passes current.

 

[duramadre]

is preferable to have the mosfet warmer or hotter than the coil? what are the temperatures of alert of both components?

 

[duramadre]

Nigel, powersupply on pin 15-13 is 14,7 Vdc and on pin 10-12 is 13,8. it's correct?

 

[nigelwright7557]

Nigel, powersupply on pin 15-13 is 14,7 Vdc and on pin 10-12 is 13,8. it's correct?

That's fine.

 

[duramadre]

and then a mosfet because it is hot and the other not? : (

 

[duramadre]

at what temperature should run the mosfets and the coil? average mean

 

[duramadre]

temperatures which are at risk?
however also uses the connex ifbr 4227 without driver

 

[nigelwright7557]

Which mosfet is hotter ? upper or lower ?