Need help in designing LED automotive circuit board

Thread Starter


Joined Oct 3, 2006
Here is the scenario. It is an LED design for an automotive 12v DC application. I have used LED Dynamics Buck Pucks in the past to feed 1 Lux III. I am having too many problems with them, so we need to design something new. Here are the problems

-They are causing FM interference in some cars due to we think..the switching frequencey
-The LED is blinking in some cars when the ignition is turned on, this needs to be fixed
-Too expensive for our application

So, I want a driver that will
-Power 1 Lux III at 900-1000ma(TBD) from 12v DC
-We want to design the circuit board to fit into our device(we have diagrams, but it needs to be a 32mm circle)
-Have no FM interference
-Will keep the LED at the same brightness for a long period of time
-Have no "flickering" issues
-be able to meet our budget

Does anyone have any ideas who can help design/make these. We want around 500-1000 of them. I spoke with George @ TaskLED we are looking for other people that can help!

Does anyone have any idea whats causing the flickering and FM issue?? Any help would be greatly appreciated.