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TPS54561EVM-555: Enable Max input on TPS54561 EVK

Lakshminarayana
Genius 3790 points
Part Number: TPS54561EVM-555

Hi,

The Datasheet specifies maximum (Abs Max) of 8.4V and On the EVK input range is from 7-60V.

Resistor divider network is been used to set the Minimum operating Voltage.

But At 60V max, EN reads a voltage of 10.5 which is deviating from the datasheet specs Is that okay?

TPS54561EVM-555 Schematic Figure 2.

Thank you.

  • 0
    TI__Guru 64365 points

    Hello

    Yes you are correct.

    This is OK for the EVM for testing purposes.  The EN divider

    will limit the current into the EN pin.

    However, for your final application, you should use a Zener clamp on the EN

    input to limit the voltage to below the Abs max value.

    Thanks