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Nextrox DC/DC Converter 12V Step Down to 5V 3A Power Supply Module

by Nextrox
4.2 out of 5 stars 100 customer reviews
| 19 answered questions

Currently unavailable.
We don't know when or if this item will be back in stock.
  • All epoxy sealed containers with Waterproof Housing; Non-isolated
  • High efficiency: >96%; Reliable, low heat dissipation max. 40 ℃;
  • With overload / over-current / over / low voltage protection, stable performance.
  • Light compact, convenient to use and transport; Auto recovery
  • Widely used in Car device, such as LED Display, Hard Disk Player, MP3, DVD, GPS, etc
Currently unavailable. We don't know when or if this item will be back in stock.


Technical Details

  • Brand Name: Nextrox
  • Item Height: 1.18 inches
  • Item Length: 1.57 inches
  • Item Width: 0.79 inches

Product Description

Specifications:
Input range: 8~23v
Output voltage:5V
Output current/power:3A

Efficiency: >96%
Weight: 30g
Size(LxWxH): 26×36×21(mm)
Cable length: 100mm

Package included:
1 x DC12v to 5v 15W Converter


Product Information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 12V to 5V Verified Purchase
It does what it says at a good price indeed.

5V output is very stable.

Efficiency: it _may_ reach the 96% mentioned, but if you need something for low load scenarios, here are real-world measurements:

0.18W (or roughly 15mA@12V) idle consumption.

0.25W load, 12V input: 52%
1W load, 12V input: 83%
2W load, 12V input: 92%

one can see that indeed with growing load, efficiency increases to excellent values - 83% at roughly 7% load is an outstanding value.

Only disappointment was for idle/very low load scenarios - wanted to use this for small solar installations where every mA (and idle consumption) counts.
This is however a characteristic of most switching regulators and can't be counted negatively against this very device.

Also, out of curiosity, tested 3 different USB-cigarette-lighter car adapters - none exceeded 70% in any of the above load scenarios (which was a little surprising, giving that switching regulators are used there, too).

Would give 4.5 stars - a little reduced for the missing wire marking and the long shipping time straight out of China - but can't, so 5 seems more fair to the product than 4.
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Size: 12V to 5V Verified Purchase
I use this in my car to provide 5v off the car battery. It has been on only when I am driving until now. Today I left it on for 4hrs in the heat of the day (98 degrees inside the car where the unit was) and the converter itself started to melt (the external wires were not hot). The outer case was too hot to touch and had splotches where the outer case had started to melt, and you could see through to the inside.
The ONLY reason I gave this two starts vs one is it could of been faulty. I have a second unit I will be testing soon. Until then, I will NEVER use this converter unattended.
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Size: 12V to 5V Verified Purchase
I bought this converter to hardwire a dashcam to my car. It worked fine to power the dashcam, but caused unacceptable noise to the FM radio. I removed this converter and replaced it with the Edo Tech Hardwire Charger Cable kit and the noise was eliminated.
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Size: 12V to 5V
Another reviewer has posted some low-power consumption testing results, but my application was higher power so did some testing of my own.
In conclusion, it's a good converter for loads under 1A. Above that, efficiency does not improve, and the heat dissipated goes up, making it non-ideal for continuous usage. It didn't reach 96% efficient in any of my tests. At the max power I was able to test (2A@5V or 10W), case temperature rose to 115F before I stopped testing.

0.67A@5V draw (3.33W) - 92% efficient. 0.29W waste heat
1.00A@5V draw (5.00W) - 92% efficient. 0.43W waste heat
1.33A@5V draw (6.67W) - 88% efficient. 0.82W waste heat
1.67A@5V draw (8.33W) - 88% efficient. 1.19W waste heat
2.00A@5V draw (10.0W) - 87% efficient. 1.50W waste heat
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Size: 12V to 5V Verified Purchase
does the job, and it fits beautifully inside this box with an arduino uno: http://www.amazon.com/gp/product/B003ZKJNVY

the only thing that is stupid, is the negative lead on the 5v side is RED..... it should be BLACK !! So just be aware that you'll want to read the label on it carefully to see which lead is + and -.
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Size: 12V to 5V Verified Purchase
Ever wanted to run your Raspberry Pi (5v) from the typical Ham shack 12v supply point - this is for you.
I use it to power my RPi Web Server form a 12 volt solar charged battery so no fear of blackouts etc.
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Size: 12V to 5V Verified Purchase
I bought this to hard wire a dash cam in my truck to the ignition switch. When I turn on the truck it turns on the camera and same for the shut down. I also have a pretty substantial stereo setup and I am running a 5 channel amp and there is not a single noise bleeding through the system from this converter. I am very happy with my purchase.
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Size: 12V to 5V Verified Purchase
Was told by ROKU that there was no adapter available to go from my boat's 12V circuit to the ROKU 2XS, so I used this to make my own adapter. Now I don't have to waste the extra power of an inverter to power this unit.

Do note, the input and output labels on this converter are in micro print, so it's worth noting that the 12V input connects to Red/Black on the one shipped to me.

Delivery did take a couple of weeks due to it being sent from China to US Mail, but was still delivered over a week prior to original estimate.
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