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Original question:

LM5181: Power output

LM5180: LM5180 Evaluation

Santosh
Prodigy 70 points

Part Number: LM5180

Hi there,

We are verifying LM5180 for our power supply application.

I am referring SNVU592D and using the evaluation board LM5180EVM-S05 as it is. ( only deviation that input capacitor is 220 microfarad - higher than proposed in design )

While testing we have some observation that

1. While startup only, if I keep load 800 mA DC and switch on Input ( Any Input Voltage between 10 V to 60 V ) then output voltage is zero only , and remains zero till I decrease load upto 330 mA.

2. Here output is available only when load is below 330 mA

3. this is not allowable in our design so please suggest a workaround solutions

https://www.ti.com/lit/ds/symlink/lm5180.pdf?ts=1597724251931&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fdocs%252Funiversalsearch.tsp%253FsearchTerm%253Dlm5180