DX  » Community » Reviews » HZDZ Adjustable Step-down Buck Module - Blue (3A)
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    • Overall Rating: 4
    • Price: 5
    • Quality: 5
    • Ease Of Use: 2
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Small regulator for small systems

    posted by ohyva on 06/30/2014 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    Small size allows it to be easily fitter in my proto systems. Reasonable well requlated with load. I measured 70mV output drop when moving to no load to 550mA load. The test was made using a rechargeable 9V battery with 5V output setting. There was no notic...
    Cons:
    The module footprint does not match 0.1"x0.1" raster, so no easy way to use this in a breadboard or any other fixed r...
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    • Overall Rating: 5
    • Price: 4
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Noisy, but excellent for low-profile power conversion

    posted by cadocado on 05/28/2014 Certified Owner

    Involvement:General (knows how to use it) - Ownership:1 day to 1 week

    Pros:
    I have two of these, which I use to charge Li-Ion cells from a solar panel. These are good for accepting an unknown or variable input and converting it to a steady output.
    Cons:
    I think they give a noisy signal. I want to check it with an osciloscope, but using these in combination with a li-ion charging...
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    • Overall Rating: 4
    • Price: 4
    • Quality: 4
    • Ease Of Use: 4
    • Usefulness: 4
    2 DXPoints
    earned for this post
    Quite small for a 3A device

    posted by walker12 on 02/04/2014 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:less than 1 day

    Pros:
    Small (22x17 mm, 0.87"x0.67") Quite efficient chip, MP1584, with soft turn-on, current limit and adjustable switch frequency. (frequency is fixed to around 1MHz for this device) According to datasheet peak efficiency (around 88%) seems to be at 1 to 2A...
    Cons:
    Adjusting resistor very small. Frequency synchronization not possible. (Not really an issue in most cases)
    View Detail » 
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