- #1
NexusN
- 29
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Homework Statement
Hi everyone,
I have a question on the SMPS.
I am studying the switching loss due to the switching action using a mosfet,
it was clear in the resistive load part, the amount of loss is the integration of the changing voltage and current through the switch.
However, when it comes to an inductive load, the books stated that
"when the current is swinging, the voltage remains fixed, and when
the voltage is swinging, the current remains fixed."
Eventually an area enclosed by the voltage, current curve and time axis is the loss.
It is understandable that when the current is raising linearly, the voltage is fixed at Vin, but why when the current is keeping constant, the voltage across the transistor drop linearly?
I cannot give the graph at the moment, if you find a graph help, please let me know and I can capture and show you.
Thank you for your attention.