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# TPS62130A-Q1: ok

Part Number: TPS62130A-Q1

Hello Support,

I have seen the reference design of TPS62130AQRGTRQ1 and want to convert 12V to 5V,3A output.

Since it is a buck convertor what minimum input current is required with 12V input voltage?

Since it is not linear regulator I think it does not required 3A minimum input current?

Thanks,

Dhaval

• Hi Dhaval,

If I understand your question correctly you are asking what the input current will be at 5Vout, 3A Iout?

You can use the efficiency for these input/output conditions to estimate the input current.

Assuming 1MHz operation with a 2.2uH inductor.

 Vin (V) 12 Vout (V) 5 EFF 0.9 Iout (A) 3 Iin (A) 1.3889

Since Efficiency = (Pout/Pin) , then Iin = (Vout * Iout) / (Efficiency * Vin)

Let me know if this solves your question.

Thanks,

Joseph

• Hello Joseph,

This has resolved the issue.

Thanks,

Dhaval