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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Product information
| Product Dimensions | 1.57 x 0.79 x 1.18 inches |
|---|---|
| Item Weight | 0.353 ounces |
| ASIN | B00A71CMDU |
| Item model number | FBA_Kimdrox |
| Customer Reviews |
4.2 out of 5 stars |
| Is Discontinued By Manufacturer | No |
| Date First Available | November 14, 2012 |
| Manufacturer | Nextrox |
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Nextrox DC/DC Converter 12V Step Down to 5V 3A Power Supply Module
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Works exactly as described. I see 5. 2v ...
Works exactly as described. I see 5.2v on the outbound which works perfectly for me. Using this on USB ports for a boat.
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