TPSM84624: TPSM84624MOLR selection procedure

ramakrishna ch

Part Number: TPSM84624
Other Parts Discussed in Thread: TPSM843620

Tool/software:

Regarding TPSM84624MOLR

As per above table mentioned 5V input can generate upto 3.5V @ 1.6MHz.

Can i generate the Input of 4.75V and output is 4.2V @ 6amps? And what are the frequency ranges are possible for this output range?

Please share your reply.

4 months ago

0 Amod Vaze 4 months ago

TI__Mastermind 24030 points

Hi Ramakrishna,

As mentioned here in this post that I replied to yesterday: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1374413/tpsm84624-tpsm84624molr-selection-procedure This device will hit negative OC so you need to look at other options like TPSM843620

Thanks,
Amod

0 ramakrishna ch 4 months ago in reply to Amod Vaze

Prodigy 130 points

Hi,

Webench results are showing positive. Please clarify on negative overcurrent limit details also..

Thank you

0 Amod Vaze 4 months ago in reply to ramakrishna ch

TI__Mastermind 24030 points

Hello,

I need to sync up with WEBENCH team on this and they will update their model. I checked with some team members internally on Table 2 of the datasheet and there is not much information available on why the VOUT limitation except that it is either due to NOC (negative current limit being hit) or stability (slope compensation variation at higher duty cycles). Given that the datasheet limits the VOUT to 3.5V max at around 5V input, the 4.2V output can potentially see issues once designed. So, I would highly recommend using a device that does not show this limitation like TPSM843620.

Thanks,

Amod

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TPSM84624: TPSM84624MOLR selection procedure