DRV8424: Switching Loss Calculation.

Kengo.Y

Guru 10385 points

Part Number: DRV8424

Hi team,

Could you teach me the meaning of the 0.5 in the below calculation?

Sincerely.
Kengo.

+1 Wang5577 over 2 years ago

Kengo,

During the switch, the FET current is from zero to Irms. The average current is 0.5x Irms.

You can find the FET Voltage vs current curve from figure 2 of www.ti.com/.../snva237 or other switching FET introduction material.

Regards,

Wang

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