Post Go back to editing

LT3752 - About Active Clamp MOSFET Selection

Hello,

According to LT3752 datasheet, body diode of the active clamp MOSFET should withstand a forward pulsed current given by the equation on page 34.

However, in demo board DC2175A, active clamp forward MOSFET has a body diode forward current rating of 16A. Calculated forward pulsed current according to datasheet for this design is around 30A.

Is there something wrong witth demo board or calculated value of the body current according to datasheet?

or am I missing something very obvious?

DC2175A Schematic: https://www.analog.com/media/en/technical-documentation/eval-board-schematic/DC2175A-3-SCH.PDF

SPD04P10P G Datasheet: https://www.infineon.com/dgdl/Infineon-SPD04P10P-DS-v01_06-en.pdf?fileId=db3a304412b407950112b42ad1e743f8

Regards,