And I would like to find a good way to power it off 20 V via USBC however, I would like the driver for it to be PWM dimmable and preferably constant current. I have looked at things like the lumiboost LED driver, but it is on back order and I don’t really know what other LED drivers I could use or take a look at or possibly even make my own. I just need some help and someone to recommend something.
Thank you very much.
Taskled has some boost driver like this one : Ultraboost Driver
Which supports PWM and Analog dimming. It’s a direct application of the LT3756 so if you want to design a PCB yourself you can use it as well.
But considering 700mA isn’t a lot of current there are probably simpler/cheaper LED driver IC, This for example, PWM and analog dimming, with a 36V max output voltage, which looking at the COB datasheet is enough for 700mA, unless you wqnt to overdrive it.
I’m sure there are Other results that would work.
I use this kind for 100W led arrays, (33v 3A) available on ebay, ali, and other marketplaces, i build a uv light with 2 of those arrays and one driver each, powered by 12 v 400W server power supply. works great. i build it 6-7 years ago.
Just make sure you power supply makes enough watts, or your driver will not put out needed power.
I realised the task LED driver is probably my best option. But how long does it take for them to reply over email? It’s been about two days. Seems like they’ve been running for a long time.
