Driver for qb144 v2??

Im new to this and I want to put two of the qb144 together , there voltage is 36 max 2100ma so I need a driver for 72v correct? Will the 150XLG-150-H-AB suffice seeing that it provides the ma but 56v?

rollup01 said:

Im new to this and I want to put two of the qb144 together , there voltage is 36 max 2100ma so I need a driver for 72v correct? Will the 150XLG-150-H-AB suffice seeing that it provides the ma but 56v?

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those XLG drivers are weird I think they are both CC and CV. it says the CC voltage region is 27-56V and 'full power current range' is 2680-4170ma.

assuming you were thinking of running them in series, you would want a CC driver that puts out @ 2100ma, and 72V. that one wont work since it would be too much current (2680ma) even at the minimum, and wouldn't supply enough voltage.

if you wanted to do parallel, you would want a CV driver that puts out @ 4200ma and 36V. that might work if you dialed down the voltage on the driver to 36V and then at max current you would be just shy of 4200 you needed. i am not exactly sure how these XLG drivers work tho so someone else should chime in.

Just get a 36V driver and wire them in parallel.

rollup01 said:

Im new to this and I want to put two of the qb144 together , there voltage is 36 max 2100ma so I need a driver for 72v correct? Will the 150XLG-150-H-AB suffice seeing that it provides the ma but 56v?

Click to expand...

Yes, it would be 72v if wired in series. I'd do that and use the 150XLG-150-M-AB, 60~107V, 700~2100mA.

rollup01 said:

Im new to this and I want to put two of the qb144 together , there voltage is 36 max 2100ma so I need a driver for 72v correct? Will the 150XLG-150-H-AB suffice seeing that it provides the ma but 56v?

Click to expand...

It will work, but you would have to connect them in parallel. No biggie the xlg range constant power which is hard to understand until you have it on hand.
But in practice its just connect the boards and turn it up until lights go out, and then lower slowly until they are on again. This drivers will adapt voltage and current according to the chip and current draw.

1212ham said:

Wire in series and use the 150XLG-150-M-AB, 60~107V, 700~2100mA.

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This works aswell. This is one of my favourite drivers in existence, so flexible and very nice current range. I wish they made a xlg-200-m as the 240-m leaves a lot of power unused.

Rocket Soul said:

This works aswell. This is one of my favourite drivers in existence, so flexible and very nice current range. I wish they made a xlg-200-m as the 240-m leaves a lot of power unused.

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I looked it up, looks good but just to make sure because on some specifications it says 1400 ma max current but thats for running at max voltage right. At 72 volt I should be good for 2100 ma correct?

rollup01 said:

I looked it up, looks good but just to make sure because on some specifications it says 1400 ma max current but thats for running at max voltage right. At 72 volt I should be good for 2100 ma correct?

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The xlg150m? Yes, datasheet has it at 2100mA at 72V, report around 2200mA. Remember voltage will change as you push it harder, and its not recommended to run them on full, id prefer to run around 40-50w.

Rocket Soul said:

The xlg150m? Yes, datasheet has it at 2100mA at 72V, report around 2200mA. Remember voltage will change as you push it harder, and its not recommended to run them on full, id prefer to run around 40-50w.

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Cool, well they are rated for up to 75 watt each so I was thinking 60w each for a total of 120. Should be efficient enough?