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TPS54531: TPS54531

Yuri Klainerman

Prodigy 20 points

Part Number: TPS54531

Question about switching losses calculation for TPS54531 (page 19 in Datasheet):

what is the units of 0.5e-9 and why Vin^2 ?

over 4 years ago

0 Lucia Gao over 4 years ago

TI__Mastermind 24720 points

Hi,

Zhao will help support this soon.

Lucia

0 Zhao Ma over 4 years ago

TI__Genius 15135 points

Hi, Yuri

0.5*e^-9 unit is Sec/V, (0.5*e^-9)*Vin=Tr=Tf --> PH rising/falling time.

So the Psw = 0.5*Tr*Vin*Iout*fsw + 0.5*Tf*Vin*Iout*fsw = Tr*Vin*Iout*fsw = Tf*Vin*Iout*fsw