TLV62585: Power-on waveform

Che Wen Yeh

Part Number: TLV62585

Tool/software:

Hi Teams,

The output voltage of the TLV62585 drops during power-on under load(with Eload CC mode >1.5A). The circuit waveform is shown below. Could you please help check if this can be improved? Thanks.

Inductor current is about 3.87A

24 days ago

+1 Muhammad Zakir Baig 23 days ago

TI__Intellectual 1780 points

Hi Che Wen Yeh,

Thanks for posting your question.

Can you use a Constant Resistance load with short cables at output side because its the real application load. I hope this would solve your problem .

Let us know if you still see the same pattern.

Best Regards,
Zakir

0 Che Wen Yeh 23 days ago in reply to Muhammad Zakir Baig

Intellectual 910 points

Hi Zakir,

In CR mode, the waveform appears normal.

Is this related to the IC's COT mode? Could there be any issues when using actual devices (power for DIMMs)? Thanks.

+1 Muhammad Zakir Baig 22 days ago in reply to Che Wen Yeh

TI__Intellectual 1780 points

Hi Che Wen Yeh,

Yes, in real world applications we never have loads that are constant current therefore it would work fine even with DIMMs.

Best Regards,
Zakir

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TLV62585: Power-on waveform