Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



The smallest boost drivers that I have ever seen! 5mm x 5.3mm

Giannis_TDM

Well-known member
Joined
Apr 27, 2019
Messages
488
Points
63
So just out of curiosity and a little self-challenge I wanted to see how small of a driver I could make. Turns out that I can make a 200mA rated PWM-enabled boost driver at that size quite easily! Without further ado here are the boards!

PS and a nice little error from osh lol:

Don't worry, I know how to get around it. I'll be ordering 6 boards and assembling 2 as proof of concept.
 



Unown (WILD)

Well-known member
Joined
Sep 4, 2020
Messages
399
Points
63
Do you have any actual physical drivers made. I see design after design but no real product. I'd like to know if any of your designs actually work.
 

Giannis_TDM

Well-known member
Joined
Apr 27, 2019
Messages
488
Points
63
Do you have any actual physical drivers made. I see design after design but no real product. I'd like to know if any of your designs actually work.
I think you have missed a thread of mine: https://laserpointerforums.com/threads/new-drivers-by-me-testing-and-suggestions-thread.107689/ I don't think I can get oscilloscope readings in software. If that doesn't convince you, Here's a pic of my designs IRL
(they are all but the one in the middle, Brownish PCB is the 1A boost, Green is 3A buck and purple is the now canceled 3A boost.)
Oh and here is a comparison for driver size for the driver I mentioned in this thread to a 5.6mm diode:

If you want more hard evidence: Here are some bare PCBs for the 1A boost:

If you still have doubts here is a 455 module running with my 1A boost set to 180mA

 

Shmackitup

Active member
LPF Site Supporter
Joined
Aug 31, 2016
Messages
193
Points
43
Will these drivers have enough boost for the 488nm diodes? They have a higher forward voltage than the typical green diodes and so far only the X-Wossee boost drivers work with them.
 

Giannis_TDM

Well-known member
Joined
Apr 27, 2019
Messages
488
Points
63
Will these drivers have enough boost for the 488nm diodes? They have a higher forward voltage than the typical green diodes and so far only the X-Wossee boost drivers work with them.
Yes, Look on the main thread, not the testing one, The 1A boost supports up to 36v out. Also to give you a rough idea, The 455 diode I am running there has a vF of around 5.5-6v. And I should mention that the 5.3mm x 5mm driver is lacking many features compared to the normal 1A boost like reverse pol prot and hence It won't be available for sale. The normal 1A boost is 7mm x 12.8mm.
 

RA_pierce

Well-known member
Joined
Sep 16, 2007
Messages
3,503
Points
83
These tiny drivers look cool. If you produce some and want to let go of a few, I'd like to try a couple (even if they don't have reverse polarity protection)!
What's the input and output voltage range?
 

94Z28

2
Joined
Jul 1, 2016
Messages
540
Points
43
I actually pulled out my "toaster oven reflow station" today and started making a batch of LED drivers. I too built some buck/boost drivers back in the day and had some guys on here testing for me with 450nm diodes. I would be interested to test if you need someone to. I have Oscilloscopes, lab power supplies, and other high-end testing gear at my disposal. I can flow them also if needed.
 

Giannis_TDM

Well-known member
Joined
Apr 27, 2019
Messages
488
Points
63
I actually pulled out my "toaster oven reflow station" today and started making a batch of LED drivers. I too built some buck/boost drivers back in the day and had some guys on here testing for me with 450nm diodes. I would be interested to test if you need someone to. I have Oscilloscopes, lab power supplies, and other high-end testing gear at my disposal. I can flow them also if needed.
Thanks for the offer but I already have designed proper test jigs for em as discrete PCBs and I got a recently calibrated DS1054Z with most of the options.
 

94Z28

2
Joined
Jul 1, 2016
Messages
540
Points
43
Thanks for the offer but I already have designed proper test jigs for em as discrete PCBs and I got a recently calibrated DS1054Z with most of the options.
Sounds good. Let me know when you are ready to sell then and I will still be testing some ;)
 

Giannis_TDM

Well-known member
Joined
Apr 27, 2019
Messages
488
Points
63
Last edited:




Top