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Thread: 50W RGB LED driver board (WS2811 version)

  1. #1
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    Default 50W RGB LED driver board (WS2811 version)

    I am in the process of testing 50W RGB LED driver boards.
    They are the same size as 20W LEDs, but larger flood enclosure is needed due to generated heat.
    The driver works very close to the top limit of some of the parts, so dedicated power supply should be used for each flood (will probably fit in the flood itself.)
    @24V, blue LED runs @50% (red and green is fine.) @27V, blue is pretty much at @100% and this is the voltage I would recommend.

    I will have few boards available for those who are willing to do thorough tests.

    50W-2.jpg50W.jpg
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    Default Re: 50W RGB LED driver board (WS2811 version)

    It looks like you are using doubled-up 1/4W resistors. Any particular reason?

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    Default Re: 50W RGB LED driver board (WS2811 version)

    To get 600mA, you would have to use 0.165ohm resistors, which are very rare. 0.33ohm are common and cheap, and using 2 of them in parallel solves this problem.
    “If somebody offers you an amazing opportunity but you are not sure you can do it, say yes – then learn how to do it later!” ― Richard Branson
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    Default Re: 50W RGB LED driver board (WS2811 version)

    Makes sense

    Sent from my XT1254 using Tapatalk

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    Default Re: 50W RGB LED driver board (WS2811 version)

    I would like to point out that 28vdc is a common aircraft power rail. It should be easy to find 28vdc power supplies.

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    Default Re: 50W RGB LED driver board (WS2811 version)

    Quote Originally Posted by Shockwave View Post
    I would like to point out that 28vdc is a common aircraft power rail. It should be easy to find 28vdc power supplies.
    I looked around and 28vdc seem to be hard to find for under $50 each and the one I saw was 60 watt so you would need 1 per flood light.

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    Default Re: 50W RGB LED driver board (WS2811 version)

    I'm planning on a 36VDC supply (enough for 6 flood) and one of these to drop the voltage down. The power lines will need to support around 6A of current for 6 floods.

    About $40 bucks for the supply (plus case), and $2.25 for the Buck convertors in the Floods.

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    Default Re: 50W RGB LED driver board (WS2811 version)

    Quote Originally Posted by Roterhead View Post
    I'm planning on a 36VDC supply (enough for 6 flood) and one of these to drop the voltage down. The power lines will need to support around 6A of current for 6 floods.

    About $40 bucks for the supply (plus case), and $2.25 for the Buck convertors in the Floods.
    That seems like a better option.

  10. #9
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    Default Re: 50W RGB LED driver board (WS2811 version)

    Quote Originally Posted by MrSmoofy View Post
    I looked around and 28vdc seem to be hard to find for under $50 each and the one I saw was 60 watt so you would need 1 per flood light.
    You can get 24V/2A supply and adjust it's voltage.

    24v.png
    “If somebody offers you an amazing opportunity but you are not sure you can do it, say yes – then learn how to do it later!” ― Richard Branson
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  11. #10
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    Default Re: 50W RGB LED driver board (WS2811 version)

    The 36v supply would blow up all the pt4115 - they are 30v maximum.

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