Power loss model temperature

fl4p / fetlib

Find the right switch. Scrapes data-sheets and ranks FETs by power loss in a DCDC converter

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Open fl4p opened 1 month ago

fl4p commented 1 month ago

take datasheet Rds_on values for given temperature (usually at 25°C, 175°C Tj)
take values from Rds_on chart
if only one point avaliable, use polomynal fit of common temperature curve (at 175°C the norm. Rdson is around 1.8-2.5)

Rdson - TJ plots