Curious Minds-- Using a step up/boost converter?

[ArdDarvis]

Hey guys, I have another question, which is good, and hopefully not annoying.

I was wondering... would it be applicable to simply use an adjustable step up/boost converter in lieu of using a dna (etc) board?

I found this which includes both step up and step down. Unfortunately I know that the LM2596 has a 50ish volt limit, but the capacitors are only 35v.

I also found this, which I like much more because of the 50v caps and LCD that displays input (for battery level monitoring) and output (for output monitoring, duh).


So, my question is, are these applicable when making VV battery mods? I don't claim to know what I'm talking about, so please correct me. Any insight is appreciated.

 

[Robert Cromwell]

They work fine if you pay close attention to the max output current and do not use a low resistance that causes over current in the device.

 

[Robert Cromwell]

I have an adjustable output 30 amp bench top power supply that I wired up to an 808 connector from an old battery and made a 3000+ watt KR808 passthru mod with. Works well on my Esmart clearomizers at 10 watts For some strange reason I can't find any 808 compatable RDA's

 

[ArdDarvis]

thanks for the reply. I read in reviews (of step up converters in general) almost exactly what you just said.

Before I make this endeavor, I will be sure to create a cheat sheet so that there is no guess work on the fly. 2.5a max seems realistically workable for what I want.

Thanks again. I appreciate it.

 

[ArdDarvis]

Just had a thought...

If I use a step up converter, I would put the fire switch on the input side, right?
I imagined it would be safer than putting it on the output side, but please correct me.

And in doing so (putting the switch on the input side), I'm not sure what my switch is rated for. Its this one, which is said (by someone) that it is 3A/36V but who really knows - would you recommend a mosfet?

 

[chefjoosie]

A 3 amp switch is plenty for either of those chips you mentioned. I'm not sure you are reading the specs on them closely or not.
Are you aware that neither of those are rated to run over 2.5 or 3 amps max, or 1 amp continuous. So you could expect the performance/output of something along the lines of an Ego stick battery.

I know some people have pushed similar chips further, but when you do you run into safety/reliability/longevity issues.

 

[ArdDarvis]

So you could expect the performance/output of something along the lines of an Ego stick battery.

Yes, I've come to understand this. Thank you for pointing it out to me- I really appreciate it.

These questions were just what came up on the journey of exploring alternative approaches. After a lot of reading, I've decided again using either of those step up convertors.

I just bit the bullet and got a DNA 20 board like I should have a long time ago. I think the sailing will be a little smoother from here on out, at least with this project. Just gotta get this first one under my belt and things will be easier in the future.

Thanks again guys for the help. Sometimes its good to just have stupid questions answered, ya know