Dc/dc converter recommendation

How-Tos & Esk8 mechanics
1

Hey everyone,

Since winter is coming i wanted to add some LED’s on my skateboard so I bought a dc/dc converter LM2596 problem is it warms up a lot and shuts off because of safety reason.
Would appreciate it if someone can recommend a reliable dc dc converter that works nicely and warm while outputting 2A max. (Input voltage is 42V max)

Thanks in advance for help.

Regards,
Mad scientist

2

https://www.amazon.com/gp/aw/d/B00W8UTRJA?psc=1&ref=ppx_pop_mob_b_asin_title

3

Thats only got a 1.5A continuous rating

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4

Pay not attention to the idiot

5

And that’s only in open air too. :slightly_smiling_face:
If it has heat shrink or is next to a warm pack or ESC then the rating goes down even more.

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6

That’s a step-up (boost) converter though. :slightly_smiling_face:
That 5A rating is…umm…optimistic IMO. “Max” is typically not a true continuous rating, just a short-term capability.

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7

Ok I’ll shut up and go away lol. I’m not very helpful today

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8

What output voltage(s) do you need?
Where will it be mounted?

9

I use this one.

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10

Hey guys thanks for the fast replies.
Input: 42V max
Output: 12V, 2A continous

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11

It will me mounted close to BMS, slightly away from VESC, but in the enclosure

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12

Hey Mooch what would you recommend, would appreciate if its small

13

There is a 10A one like so: https://www.ebay.com/itm/10A-DC-DC-6-5-60V-to-1-25-30V-Adjustable-Converter-Step-Down-Module/402456778157?hash=item5db44b15ad:g:phQAAOSwiS9fbZgj
Thought I can’t speak to it’s reliability or efficacy.

If you have the room, these are solid: https://www.amazon.com/Diymore-Synchronous-Converter-Step-Down-Module/dp/B072BN43P8

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14

Just saw you need 12V, will probably save some space getting something that does not adjust voltage out. Plenty of 12V5A buck converters out there.

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15

I use one of these, even at 4A output it doesn’t get warm.

https://www.amazon.com/gp/product/B07V8J6BJQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

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16

Go for isolated bucks. Oherwise overvoltage will fuck you over, when you turn it on and off rapidly…

17

Do you have one you recommend?

18

I use a beefier version of this one and it has worked flawlessly. Mine is rated for 60volts 10amps, I pull 5-7 amps through it and it does great.

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https://www.mouser.com/ProductDetail/Delta-Electronics/V36SE12004NRFA?qs=%2FW4LtXOBxKtjEnZ0waYubA%3D%3D
https://www.mouser.com/ProductDetail/CUI-Inc/PDQE30-Q48-S12-D?qs=GedFDFLaBXEV5Z7J7D3IIw%3D%3D
These are all good candidates IMO.

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20

Thanks!

The Delta board’s 4.2A current rating is based on using a 300LFM fan. How hot did it get (what current levels?) for you in an enclosure? Did you heat shrink it?

For the CUI converter, did you use the recommended input/output caps? Or was it stable without them?