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LED driver and voltage help? Answered

Here goes nothing. How everyone can help. Right now i have a 50watt led that can be wired 85-277VAC.
It has a led driver that  has all this on it.

Now with all that being said it is an hP0050 led driver. Now on 120VAC it pulls .42 amps. Now at 12V this should pull 4.2 amps.

What i need to know how to do is use 12-24VDC input and still be able to power the 50 watt led in DC voltage.

Anyone help.. I would need to be able to do it cheaply bc my larger lights ahve 4 of the 50 watt leds in it so i would ahve to do this 4 times..


So look for a 200W LED driver, with mains input, 0.35A output, the voltage will sort itself out. You need a constant CURRENT driver, which is what you already have,

Here are a couple more images. From the pcs below this is testing the amp pull on the Red and Black wire that connect tot he led. The output DC voltage to the led is 29.79. The red leg has an amp draw of .98 to 1.06 and the black wire to led is 1.68-1.80.


Forget the voltage, the current is the value being controlled, and either your meter isn't working properly at the frequency the supply is outputting - or you're putting your meter in directly ??? You DO have your LED in circuit too ???

Yeah, without the LED it will show some funky readings.

Like he said, for this application ( constant current driver ) Current is what you need to Control. As odd as it sounds, let the voltage do it's thing.

This is with the led in place powering it when the reading were taken from the driver. So i need a driver or a step up boost convertor that will take my 12VDC in and convert it to a 20-36VDC out that has a constant of 1500MA or 1.5A. Most of the ones i see just say 1500MA MAX

200 Watt? even tho the led only requires 50w and the current driver is rated at 1500MA

No not really. BC i have lights that only have 1 led, or 2, or 3 or 4. So i will do individual drivers like they are now.

So now you need a 12V input boost converter of 50, 100, 150 and 200W rating for 1,2,4 and 4 lamps. Your LEDs need more than 12V each to make them run

Yes the Led requires based on the ballast 20-36V. So i know i need a step up DC boost convertor to take 12V in and output 20-36V. Right now the LED draws right at 30VDC from the driver.

As far as the 50,100,150,200 i need a driver for each led.

the 50 has one led

the 100 has 2 leds

the 150 has 3 leds

the 200 has 4 leds

Right now all we offer is 120V lights b/c of this issue and i need to keep the redundancy of each led being on its own driver so in-case one driver fails it will not kill the whole light.


3 years ago

This tells me the driver is a constant current 1.5A source capable of 20 to 36vdc.

If your LED is really sucking 50 watts then at 1.5A it is hovering around 33vdc.

You will need a different 50 watt 1.5A constant current driver that runs off of 12 or 24 VDC.

Right this is what i am looking for. I have found a few but not sure what would work the best. I will be needing a bunch of them since my lights have from 1 led that is 50 watts to a fixture that has 4 leds that each are 50 watts. Each led has its own driver.

I have attached an image of the driver that is currently running the led off of 120V


OK, last year, to light a warehouse I used a dozen hung reflectors each composed of three 50 watt LEDs on a heat sink wired in series using a single 1.5A driver 80vdc to 125vdc which was adjusted to run 1.25A for extended 30 year led life.

The lights come instant on, very bright and under a third of the operating cost.

The point being you do not need a driver per LED !

You can run three in series with a 150 watt driver at the 1.5A

But these are used on bow fishing boats so i need the redundancy of individual drivers.

One driver will work for all 3 Just Fine :) Be sure it can handle the combined voltage and current

On that note, a quick Ebay search didn't turn anything up so it may be difficult to find

Understand...... That's a lot of light on a boat.


If ur using a 50watt Led, most of them are in that 30-33V range, the driver will adjust the voltage for you, and only deliver the Amps (current) that the Led requires.

May I ask where you saw 12-24V? I have a 10W RGB Led that will take a 9-12V input, but anything that High wattage will most likely be 30-33v as Icing said

Most 12V lights like i am talking about can be wired input of 12-24VDC.

This is not currently how mine is wired or ran. I would even be ok if i could find 2 different drivers. One for 12V and one for 24V