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Deek-Robot P-11 power module  

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triform
(@triform)
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2020-05-10 4:24 pm  

I have gotten two of these and they both blew.  Avoid it.

Details:

 


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triform
(@triform)
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Joined: 1 year ago
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2020-05-10 6:06 pm  

Update:  I STILL would NOT BUY, but the 1.8v, 3,3v, and 5v from the USB does still work ok. I removed the boost converter chip.  Not sure if I would even use it though.

 

IMG 20200510 125706

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itsCaseyDambit
(@itscaseydambit)
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2020-05-10 6:15 pm  

Thanks for the insight. Being as power supplies are the root of any project, it's nice to know what not to buy.

I've been pleased with the MP1584EN

IMG 2536

In this project, I packed four units onto one board with a common in-voltage bus of 19.4vDC (not the best idea, but it's compact). I can get four different dc-voltage outputs from this one small space.

Works for me. 🧐 

 


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triform
(@triform)
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2020-05-10 7:18 pm  

@itscaseydambit

Nice board!

I really wanted it for mounting to the top of a larger breadboard I have, I suppose I could try the board as-is now since I was not really going for the boost side anyway.

I could also put together a few LM317T's on one of my small Naan boards and have the three (1.8v-5v) on it. I have a lot of 317's from long ago. I did want non-switching regulators anyway, so the boost convertor dyeing is probably better. 

Thinking now, I will do that. I'll use the Deek board and make my own on the lil-naan or on the micro once I get them in from the PCB house. 

Scott


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itsCaseyDambit
(@itscaseydambit)
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2020-05-10 7:32 pm  

BTW: if you need a power supply of 1.8vDC, the MP1584EN is not for you. They are DC-DC buck converters with no boost conversion, but, they supply 2.5vDC+ (roughly) with a decent draw of 3-3.5 amps if needed.

I ran one module on a 9vDC output dead short for around 90 seconds to test. It provided the amperage, but, the unit got REALLY HOT! Hence, I'm designing a fan cooling system for the assembly.


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itsCaseyDambit
(@itscaseydambit)
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2020-05-10 7:35 pm  

@triform

I'm curious...what is the input voltage you're using to supply the module?


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itsCaseyDambit
(@itscaseydambit)
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2020-05-10 7:45 pm  

@triform

I, too, have LM317 assemblies that I soldered together a while ago. I really like their performance, voltage wise. They only produce 500 milliamps, though, and they get rather warm, too (as I'm sure you're aware).

I LOVE this kinda stuff. It's engineering, it's production, it's craft work. 

It's also something I know so little about LOL. Every project is a learning experience that I drink up like a sponge.


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triform
(@triform)
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2020-05-10 9:17 pm  
Posted by: @itscaseydambit

@triform

I'm curious...what is the input voltage you're using to supply the module?

The Deek module has a micro USB in.  All the stuff I will be running is way low power and would only want a linear regulator anyway for no extra noise. I have a few 317s running pics at 3.3 and 5v.  They don't get warm at all as just a uC is usually just a few Milliamps. 


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