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TPS54160: minimal inductor value

Part Number: TPS54160

Hi Team,

Good day! Could you help us with our customer. I have shared their full inquiry below.

I am looking for minimal inductance value of inductor in DC/DC converter with TPS54160.

Equation 28 in datasheet specifies the following equation:


Let's assume that my maximal current IOUT in application will be 500 mA. But the current will be variable and sometimes it may be much lower, for example 50 mA. If I calculate the equation with 50 mA, the minimal required inductance will result in 10x higher value than inductance at 500 mA. This would mean using too large inductor.

What would be the correct approach here to calculate the minimal inductor value? What about the high minimal inductance at low currents?

Best regards,