There are 2 resistors that set the deadtime.
Remove the upper one on the circuit.
This will give 105nS dead time.
See if that cools down the lower mosfet.
it's ok for 600w? with 50 0 50 ac or 58 0 58 ac?
for reduce dead time how i can?
(many many thanks)
for reduce dead time how i can?
(many many thanks)
I removed the r26 and the temperatures are the same. Tomorrow order two IRFB 4020 and test if the comportomento MOSFETs is different
how can I verify that it is the dead time? I have removed the r26 but the mosfet always remains at a temperature more than double the other.
Although tonight he played for 2 hours at very high volumes. only that the coil gets too hot. 50 degrees despite the fan.
Although tonight he played for 2 hours at very high volumes. only that the coil gets too hot. 50 degrees despite the fan.
You must have the right core material.
The type is I used was T106-2 and that barely gets warm.
You will pick one up on ebay.
I think there is something that the face warm. the same amp mounted in a chassy does not heat up so much time, it stops at 43 degrees max. cards purchased in the past instead of the coil heats up a lot.
for the dead time if the port pin to B-(-78V dc, it's ok?) should I set it to a minimum, right?
for the dead time if the port pin to B-(-78V dc, it's ok?) should I set it to a minimum, right?
Yes dead time should be at -78vdc
Thats the setting I use.
My 2092 amps never get warm.
I even run mine without a heat sink and for brief periods on full power it is OK.
Thats the setting I use.
My 2092 amps never get warm.
I even run mine without a heat sink and for brief periods on full power it is OK.
then connect directly to the pins of the dead time at -78 with no means of resistance, you confirm that?
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