Lord_grezington
- May 3, 2013
- 124
- Joined
- May 3, 2013
- Messages
- 124
Hello...
I am hoping to use this Mosfet http://www.farnell.com/datasheets/51964.pdf
The Specs are as follows:
Max Current = 61A (38.5A @ 100 degrees)
Max Voltage = 200V
Rds(on) - 0.044 Ohms
Max Power dissipation = 417W (3.3W/degree for derivative above 25 degrees)
Now, I want to draw around 30A (below max current @ 100 degrees) nearly continuously, , so are the calculations below correct?
Max temperature needs to be around 80 degrees, so: (80 - 25) x 3.3 = 181.5W max power dissipation.
Power dissipation is (30 x 30) x 0.044 = 39.6W (which is below Max)
I will only be taking around 48V through the Mosfet, I will also be driving the Mosfet through a driver with a Vgs of 15V to keep losses to a minimum. I will also me running it from 100Khz.
Will this work? if not where am I going wrong?
Thanks
I am hoping to use this Mosfet http://www.farnell.com/datasheets/51964.pdf
The Specs are as follows:
Max Current = 61A (38.5A @ 100 degrees)
Max Voltage = 200V
Rds(on) - 0.044 Ohms
Max Power dissipation = 417W (3.3W/degree for derivative above 25 degrees)
Now, I want to draw around 30A (below max current @ 100 degrees) nearly continuously, , so are the calculations below correct?
Max temperature needs to be around 80 degrees, so: (80 - 25) x 3.3 = 181.5W max power dissipation.
Power dissipation is (30 x 30) x 0.044 = 39.6W (which is below Max)
I will only be taking around 48V through the Mosfet, I will also be driving the Mosfet through a driver with a Vgs of 15V to keep losses to a minimum. I will also me running it from 100Khz.
Will this work? if not where am I going wrong?
Thanks