TPS54160A: Minimum VIN to transfer VOUT of TPS54160A application

liao yungchien

Part Number: TPS54160A

How is relationship between VIN and VOU

for example, i want to design a circuit that OUTPUT is 6V .

The VIN minimum is 6+(voltage reference 0.8)=6.8V right?

0 Marshall_Beck over 2 years ago

Hello, you are interested in the dropout behavior of the device it sounds.

You can approximate required vin for 6V regulation by:

6V = Vin - .410*Iout - LDCR*Iout

LDCR is DCR of output filter inductor.

I am also considering the Vdrop from power FET at max duty cycle, which is close to 100%. This is an approximation.

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