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TPS82130: max duty cycle check

Jim Tsai
Expert 4470 points
Part Number: TPS82130

Hi,

My customer design requirement is as below:

output voltage: 3.3V

output current: 3A

what's the min input voltage the device can support?

  • +1
    TI__Expert 7320 points

    Hi Jim,

    TPS82130 has 100% duty cycle feature for lowest dropout, and the max duty/min input voltage is decided by below equation.

    VIN(min) = VOUT(min) + IOUT*RDP.

    RDP is typical 160mOhms so under 3A output, the min VIN is 3.3+3*0.16=3.78V.