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Formulas
1-
Current Form Factor: FF
a)
Sine wave
QC
= conduction angle:
b)
Rectangular
waveform:
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QC
|
15º
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30º
|
45º
|
60º
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90º
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120º
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180º
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(FF)2sen.
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31.956
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15.832
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10.452
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7.721
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4.933
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3.527
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2.468
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(FF)2ret.
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24.000
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12.000
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8.000
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6.000
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4.000
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3.000
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2.000
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2-
Forward voltage losses:
3-
Thermal resistance heatsink to ambient:
4-
Formulas for calculation of I2t for time limited in 0.1 to 10ms, tx measured in seconds.
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