Custom laser array driver

[likevvii]

I have a module that has a built in laser array, optics, and phosphor.
The laser array is a nubm36. Basically a 240W array @3A.

I am searching on my own already, but I might as well ask here:

Do you guys have a recommendation for someone capable of producing a custom driver that is more compact than the one I have in the picture?
I want a wider input voltage range so I can use a li-ion battery pack.
I am looking for something that is similar to this in size:
https://www.maimanelectronics.com/product-page/high-power-laser-diode-driver-oem-cw-15а-40v-sf6060

I want the unit cost to be under 100USD so it can be a consumer product.

Do you think 3500usd is enough to develop a driver?

Thanks.

I'm also trying to customize an aspherical fresnel lens, 165mm diameter, 120mm focal length, AR coated.

 

[Borislav@87]

These work stably. You just need to use two drivers to power every two rows of 10 laser diodes. I use the same converter with 18pcs 18650 batteries


600W Aluminum Plate DC-DC Boost Converter Adjustable 10A Step Up Constant Current Power Supply Module Led Driver

https://a.aliexpress.com/_mLgIFM2

 

[likevvii]

Thank you very much for the help and ideas!
I have tried a 1200W DC boost converter before:


However, this one has voltage overshoot:



Maybe there is a way to have them slowly ramp up in voltage?
Does the driver you recommend have any overshooting?

Thank you for referring me to the power electronics company, ill give them a go and see what happens.

 

[evgeniy]

In order to organize a soft start in such drivers, it is enough to solder a 10 mF capacitor to the terminals of the voltage adjustment potentiometer

 

[RedCowboy]

Start a conversation with Giannis TDM He has the know how to design and produce your driver.

 

[Giannis_TDM]

Start a conversation with Giannis TDM He has the know how to design and produce your driver.

Can definitely do that but it needs to wait till summer time due to me taking some national exams for a possible E.E scholarship

 

[likevvii]

Can definitely do that but it needs to wait till summer time due to me taking some national exams for a possible E.E scholarship

Good luck!

What do you think the cost would be to develop something like this?
Hours + material

I was thinking for brightness control, we can just control the 4 individual arrays for: 0, 25, 50, 75, 100%
It would technically be 4 individual drivers if done this way.

 

[Giannis_TDM]

Good luck!

What do you think the cost would be to develop something like this?
Hours + material

I was thinking for brightness control, we can just control the 4 individual arrays for: 0, 25, 50, 75, 100%
It would technically be 4 individual drivers if done this way.

The BOM should not surpass 50 dollars.

 

[Giannis_TDM]

Good luck!

What do you think the cost would be to develop something like this?
Hours + material

I was thinking for brightness control, we can just control the 4 individual arrays for: 0, 25, 50, 75, 100%
It would technically be 4 individual drivers if done this way.

Honesty I do not really have a solid number to give as some prototyping runs will need to be done to iron out any sort of bugs, besides that I expect it to be lower than the figure you have on your post.

 

[Borislav@87]

In order to organize a soft start in such drivers, it is enough to solder a 10 mF capacitor to the terminals of the voltage adjustment potentiometer

Can you give me some more information on how to do a soft start? What exactly should this kindensator be and where exactly should it be soldered?
Is it the one in the picture?

 

[paul1598419]

Can definitely do that but it needs to wait till summer time due to me taking some national exams for a possible E.E scholarship

Good luck to you. I got my BSEE back in the 1970s, but paid for it myself. Did qualify for Pell grants though.

 

[likevvii]

I was able to contract develop a compact driver and firmware for a 50W laser array. Good learning process.
It took around 3500usd

 

[likevvii]

Made a compact custom driver for the 300W NUBM31T / NUBM36
V3:
3A, 82V
97.45% efficiency at 3A


I out: 0~3.5A
V in: 35~60V
V out: 60~90V


All components are on the top of the PCB and a heatsink is on the bottom.
I don't know how this will perform for thousands of hours.