DC-DC / PSU for up to 60V input, 5V output @ ~2-3 Amps

[WanaGo]

Hi,

Just wondering if anyone has any ideas for a switchmode or suitable DC-DC, for dropping 24V or 48V batteries down to a 5V level, with about 2-3 Amp capacity.
Its for a battery monitoring system.
Just trying to find suitable parts, ideally SMD/SMT parts to mount onto a PCB.
Not really wanting a module which has to sit off a PCB, prefer like a little Switching DC-DC or something.
So far havent really managed to find much.
Any switcher IC's I have found have sort of been up to 1A max, and can do about 36V input, nothing really over that.
I have found some little modules, like a little PCB with multiple components, but they are $10+ each.
I am not necessarily looking for a 1 part solution, an IC with inductor and passives etc is what I had in mind, its just trying to find a suitable part to start with I have no had much luck with as of yet.

Anyone have any ideas?

I have found these:
https://www.digikey.com/products/en?dc=81646
https://www.digikey.com/product-detail/en/murata-power-solutions-inc/OKI-78SR-5-1.5-W36HE-C/811-3289-ND/6817694
I could use 2 of these at a push if I had to...

But ideally wanting something like this, but with higher output amperage capacity.
https://www.digikey.com/product-detail/en/linear-technology-analog-devices/LT1933ES6-TRPBF/LT1933ES6-TRPBFTR-ND/959504

Any help would be appreciated

Thanks

[angust_uk]

I've used the LM5005 from TI in a past project where we needed a wide input range - https://www.digikey.co.uk/product-detail/en/texas-instruments/LM5005MHX-NOPB/LM5005MHX-NOPBCT-ND/3526995

Worked well for me, and on brief inspection seems to meet the criteria

[angust_uk]

I've used the LM5005 from TI in a past project where we needed a wide input range - https://www.digikey.co.uk/product-detail/en/texas-instruments/LM5005MHX-NOPB/LM5005MHX-NOPBCT-ND/3526995

Worked well for me, and on brief inspection seems to meet the criteria

The minimum guaranteed limiting current is only 3A, which means for it to output 3A, it has to operate in CCM with very low ripple, which means you need a huge inductor.
Even for it to output 2.5A, you need a 33uH inductor (factoring in tolerance and inductance drop).

That's exactly what I used:

[WanaGo]

Thank you everyone, this is great stuff.

We had considered a transformer, but that is not ideally really, but it is something we thought we might have to go with...

But this LM5005
That looks great. I don't know why that never came up in searches I had done on Digikey.

Many thanks, I am going to look into this now.
2.5A could be plenty. 2A likely will be enough for what we can work with.

Thanks very much