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DS90UB913A-CXEVM: The operating with PoC for DS90UB913A-CXEVM

Atsushi Yamauchi
Genius 4810 points
Part Number: DS90UB913A-CXEVM
Other Parts Discussed in Thread: LP38693, DS90UB913A-Q1

I would like to confirm PoC operation for DS90UB913A-CXEVM.

DS90UB913A-Q1 is given the power supply by PoC. LDO is LP38693 in this EVM.

In the ramp up period, there was inrush current about 350mA.

I think 350mA is the current limit of LP38693, so this operation with inrush current is correct.

Is it right?

Best regards,

Atsushi Yamauchi

  • 0
    TI__Intellectual 1820 points
    Hello,

    I don't think 350mA is the current limit of LP38693. There are 2 (two) LP38693s on the 913A EVM. LP38693 is 500mA load capability LDO.
    The 350mA inrush current may be just charging current into the filtering capacitor of the LDO supply voltage pin.

    Best Regards,
    Sugiura