Home > Led Driver > Buck Boost Laser Driver

Buck Boost Laser Driver

Contents

Dude, You did it.. What IC to use? (Buck Design) « Reply #4 on: April 11, 2014, 06:50:25 AM » What you want is a LED driver (some normal DC DC converters can be bodged overvoltage/overtemp protection After consistent test on my test load with 2,3,4, and 5 rectifying diodes At 6V(max) output the max output current drops slightly. ~1.5A in boost At <=5.5V output current When i hook up another driver at the output of this one, i probably should disable the mode-selection on the buck/boost so i don’t feed a PWM signal into the 105c, http://linuxcrypt.net/led-driver/buck-boost-led-drivers.html

I will update this thread with a battery powered operation when I get the... In boost mode I have tested it til 2.1A. I'm not a fan *at all* of pots. O.o good thing I didn't set it higher the driver was in buck mode. http://laserpointerforums.com/f67/new-buck-boost-high-output-driver-69959.html

Constant Current Boost Led Driver

Its an Expensive driver though. Boost and buck designs... You may take a look at this table showing the different parameters: http://www.ichaus.biz/selector_laserdrivers .

  • I intend to post after new years with a build report for this driver and tests.
  • I have read that Constant current drivers are the best drivers to drive laser diodes,is that true?
  • For pot I need more components on the board which are unnecessary!
  • Discrete driver are cost effective but have their limitations( more details can be found here: http://www.ichaus.biz/upload/pdf/Appl3_a3es.pdf ).

specs in buck mode: constant current output max output tested 2.5A @ 4.5V (may go to close to 3A not tested) max input in buck mode should be 5.5V (6V is It can be made with sensing the input voltage and controlling the EN pin but that will take way more space. __________________ 3.0A High Power Buck Driver (idrv3) 2.2A High Power Just wondering.... Boost Converter Led Driver thanks for the vid and showing what the current draw is for the Li-Ion range of voltages. 12-23-2011, 04:39 PM #13 foulmist Class 3R Laser Join Date: Mar 2011

It might go higher but it's unlikely. Buck Boost Led Driver Module I will order more parts to try out. But what if he eats the whole bag? Laser glow LSG-532-Sport protective eye goggles OD 7+ 190-532nm HIGHLY RECOMMENDED!!

I’m trying to use a 445nm laser diode with this and it’s forward voltage is about 5.0 volts at 1.8A, which is the max current. Boost Led Driver Ic User guides(1) Title Abstract Type Size (KB) Date Views PMP5334 TEST RESULTS PDF 100 17 Dec 2010 34 Design files(2) Title Abstract Type Size (KB) Date Views PMP5334 Schematic PDF 70 I was wondering if this was new. —BLF ≠ B-grade Flashlight Forum Ongoing projects: Buck Boost Led Driver Module

Regards 6th March 2012,12:27 6th March 2012,12:44 #2 keith1200rs View Forum Posts Private Message View Blog Entries View Articles Super Moderator Achievements: Join Date Oct 2009 Location Yorkshire, UK https://sites.google.com/site/dtrlpf/home/flexdrives http://budgetlightforum.com/node/624 Cheers.—BLF ≠ B-grade Flashlight Forum Ongoing projects: check my blog At 3.3V output the current can go above 2A in boost and around 3A in buck! This is the part: http://www.allegromicro.com/en/Products/Regulators-And-Lighting/LED-Drivers-For-Lighting/A6211.aspxAny opinions? battery itself maybe after new year... (post companies.. Buck Led Driver Circuit

List of Laser Pointer Companies (link opens new window) Page 1 of 10 1 23 > Last » LinkBack Thread Tools Display Modes 12-23-2011, 05:47 AM #1 foulmist Class 3R As is (7V), it’s just another driver with identity disorder. 7V limit means it’s not suitable for 2x li-ion, no low-voltage protection means single unprotected li-ion will be drained to death, With an added Pot, this driver should add some flexibility to our builds. http://linuxcrypt.net/led-driver/buck-boost-driver.html Please allow 2-3 business days for reply.

Reason: updated specs 12-23-2011, 05:50 AM #2 Wolfman29 Class 3B Laser Join Date: Jan 2011 Location: Davis, CA Posts: 3,828 Rep Power: 227 Wolfman29 Class 3B Laser Join Xl6003 thanks for the vid and showing what the current draw is for the Li-Ion range of voltages. ALREADY TESTED WITH TRUSTFIRE - PROTECTION KICKS IN!

Maybe everyone uses protected cells?

For more info about the circuit, Tido’s post here might be helpful, as mentioned by djozz. You will find monitor photodiodes in lasers up to a few watts but also plenty without them - it depends on the market the laser is intended for and the laser It is fairly rare to be using diodes that have a built in monitor photodiode at those current levels. Step Up Led Driver Can anyone provide more info on this?

Inventory Home | Power Management | LED Drivers | Buck-Boost LED Drivers Buck-Boost LED Drivers ROHM offers a broad lineup of LED drivers, such as AC/DC, I will make a few commercial boards after new year if anyone is interested. Keep up the good work! http://linuxcrypt.net/led-driver/buck-boost-led-driver.html if they put that up I’ll be happy to test.—____________________Girls can shoot!

I did a second board revision and have sent it off for to be made. Frank 7th March 2012,10:10 #4 AVRrajan View Forum Posts Private Message View Blog Entries View Articles Newbie level 4 Join Date Sep 2011 Posts 6 Helped 0 / 0 Points 252 Discrete driver are cost effective but have their limitations( more details can be found here: http://www.ichaus.biz/upload/pdf/Appl3_a3es.pdf ). About ROHM News Support Careers Investor Relations Corporate Social Responsibility (CSR) | Terms & Conditions Privacy Policy Site Map Contact Us © 1997 - 2017 ROHM Semiconductor.

http://laserpointerforums.com/f67/fr...ing-71433.html At the very least, there are some very smart people there who are working on a lot of different drivers. Most low power devices have a monitor diode which should be used to control the laser. But my final pcb should end up a little smaller than my protoboard (which is made by hand). If you are making something for mass market then you will need to run the diode at a manufacturer rated level.

What IC to use? (Buck Design) « Reply #6 on: May 01, 2014, 06:34:57 AM » Hello Jim,Not sure but you might be able to fit a Microchip MCP series into It is rated for 4.5A continuous and 7A saturation. There single channel integrated driver iC also. They look pretty large.

shhish ) So far no glitches at the output. Here is a direct link... Enjoy your design work! 1 members found this post helpful. 3rd September 2012,11:40 3rd September 2012,16:48 #15 tsteele93 View Forum Posts Private Message View Blog Entries View Articles Newbie Other laser diodes may rely on an initial production adjustment with a power meter.

I agree completely and getting up to 3A is a great option since most of the drivers we have are struggling to get much past 2A right now and we have