T
treez
Guest
Hello,
We are designing a 4.19uH inductor for a 680W boost converter.
The inductor current peak is 49.5 Amps.
The inductor current trough is 39.4 Amps.
We are using a PQ40/40 core from EPCOS....as follows...
https://www.epcos.com/inf/80/ds/b65883a.pdf
We are using the core with N92 material, and will put a 3mm gap in it.
This way, 8 turns will give us an inductance of 4.19uH, and a saturation current level of 91.7 Amps.(300mT)
However, how, from the above PQ40/40 ferrite datasheet do we calculate what will be the hysteresis losses in this inductor?
Also, is the gap too large and does this mean it will give a poorly tolerant inductance value?
We are designing a 4.19uH inductor for a 680W boost converter.
The inductor current peak is 49.5 Amps.
The inductor current trough is 39.4 Amps.
We are using a PQ40/40 core from EPCOS....as follows...
https://www.epcos.com/inf/80/ds/b65883a.pdf
We are using the core with N92 material, and will put a 3mm gap in it.
This way, 8 turns will give us an inductance of 4.19uH, and a saturation current level of 91.7 Amps.(300mT)
However, how, from the above PQ40/40 ferrite datasheet do we calculate what will be the hysteresis losses in this inductor?
Also, is the gap too large and does this mean it will give a poorly tolerant inductance value?