HDS Systems
Page 8 of 10 FirstFirst 12345678910 LastLast
Results 211 to 240 of 295

Thread: High efficient 5A/9A Buck Converter for SST-50, SST-90

  1. #211
    Flashaholic cdrake261's Avatar
    Join Date
    Jun 2011
    Location
    Columbus, IN
    Posts
    438

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Will the 5 amp single mod driver fire up three XML?

  2. #212

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Quote Originally Posted by lightliker View Post
    Via Paypal ordered: 1 x adjustable 9A, leads at ONE side (where the coil is located), international and registered mail, totally € 46,50
    Is this the best way to cool down the buck converter with cooling tape at the side of the microprocessor?
    Leads as long as possible (12 cm).
    SSR-90 white 5700K ordered at the adress you suggested!

    Input voltage will be 24V, I red that the mounted capacitors can handle 25V.

    Now waiting till the funstuff arrives and looking for a nice floody/throwy reflector
    Best way is potting the driver with thermal potting compound ( Arctic Silver thermal adhesive, Arctic Alumina)
    PS.: next time please contact me before paying anything.

    Quote Originally Posted by cdrake261 View Post
    Will the 5 amp single mod driver fire up three XML?
    Sure, I just don't know if the XML can handle the 5A.

  3. #213
    Flashaholic cdrake261's Avatar
    Join Date
    Jun 2011
    Location
    Columbus, IN
    Posts
    438

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Quote Originally Posted by Der Wichtel View Post
    Sure, I just don't know if the XML can handle the 5A.
    Your triple XML doesn't seem so bothered by running 5amps from my h6flex. The single mode sounds appealing....

  4. #214

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Yes I got more than 5A with the XM-L as well during testing but the LEDs were mounted on a very large copper heatsink.

  5. #215
    Flashaholic cdrake261's Avatar
    Join Date
    Jun 2011
    Location
    Columbus, IN
    Posts
    438

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Quote Originally Posted by Der Wichtel View Post
    Yes I got more than 5A with the XM-L as well during testing but the LEDs were mounted on a very large copper heatsink.
    It's not so much a continuous use flashlight as is it's a wow-light

  6. #216

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Der Witchel, i've ordered 1pc 9A non adj to Russia.
    Paid 38.45.
    Please, let me know when you send it.

  7. #217
    Enlightened
    Join Date
    Dec 2006
    Location
    Sweden
    Posts
    55

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    so did I

  8. #218

    Default

    So are these available with adjustable current? In OP, it says single mode only, but i see people ordering an adjustable driver? I'd like a 5amp 3 mode LMH. Possible now or still No?

  9. #219

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    sorry, no modes yet

  10. #220

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Der Wichtel,

    I'm very interested in purchasing one of your 9A Buck Converters to use with a single SST-90 LED. I don't know very much about electronics, therefore I have the following questions. I'm trying to decide whether to use use 2x32650 6000 MAH batteries in serial (8.4v) or 4x18650 3100 MAH batteries in serial (16.8v) with your driver. Would the total power be about the same in either case? Is 8.4v any more efficient than 16.8 volts? Would the heat produced be about the same?

    Thanks,

    Andy

  11. #221

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    if the capacity ratings of those batteries are correct ( I don't think so) then both setup will be very similar.
    With 8.4V the drivers will work slightly more efficient

  12. #222
    Flashaholic*
    Join Date
    Feb 2008
    Location
    Golden Poppy State
    Posts
    1,236

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    I know that Callie's Kustoms sells 3100mah 18650 6.2A protected/not-protected cells. They are based on the panasonic cells.

  13. #223

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Quote Originally Posted by Der Wichtel View Post
    if the capacity ratings of those batteries are correct ( I don't think so) then both setup will be very similar.
    With 8.4V the drivers will work slightly more efficient
    Thanks Der Wichtel

  14. #224
    Enlightened
    Join Date
    Dec 2006
    Location
    Sweden
    Posts
    55

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    driver received :-) thank you !!
    i will try to test it as soon as I find arctic alumina to buy here in Sweden...

    Or can I test run the driver for a couple of minutes over 2 SST-90s from a car supply without potting to heatsink (and ruining the driver) ?
    the first page says that heatsink is required if running one LED...

  15. #225

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Hi,
    should be no problem for a couple of minutes. But don't start your car engine, some cars have very large voltage ripples coming from the generator.

    Best regards
    Yitao

  16. #226
    Enlightened
    Join Date
    Dec 2011
    Location
    Slovenia
    Posts
    87

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    So if I understand this right, it is completely OK to drive single SST 90 with 9Amp driver connected to two 26650 li-ion in series (8,4V).....??

  17. #227

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    yes, that's right

  18. #228
    Enlightened
    Join Date
    Dec 2011
    Location
    Slovenia
    Posts
    87

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    A little theory for beginners.....like me....

    If I drive single SST-90 with "DW" 9Amp buck driver I need at least 3.9V (SST 90 input) + 1V (power drop) = app 5V input voltage.... am I right?
    But what is the maximum voltage acceptable for single SST-90.
    And then if I connect 2 or 3 SST-90 in series, what is the case now.....

  19. #229

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Have a look into the datasheet. It's all there.
    As described in the datasheet "Input voltage must be at least 2V above output voltage".
    You must stay above the minimum supply voltage of 6V as well. However due to voltage drop across the wire I recommend at least 7V.
    For the maximum voltage you can use up to 22V.

    If you connect more LEDs then you need to have at least an input voltage of: Number_of_LEDs * Vf + 2V and up to 22V

  20. #230
    Enlightened
    Join Date
    Dec 2011
    Location
    Slovenia
    Posts
    87

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Quote Originally Posted by Der Wichtel View Post
    Have a look into the datasheet. It's all there.
    As described in the datasheet "Input voltage must be at least 2V above output voltage".
    You must stay above the minimum supply voltage of 6V as well. However due to voltage drop across the wire I recommend at least 7V.
    For the maximum voltage you can use up to 22V.

    If you connect more LEDs then you need to have at least an input voltage of: Number_of_LEDs * Vf + 2V and up to 22V
    OK...this is clear now, but how will the driver know how much LEDs I have connected, so it wont drive single SST 90 with 11.1 Volts,
    thinking that is connected to triple SST 90....
    How the driver selects the proper output votlage in conjunction with the number of connected LEDs.
    Or there is a driver for singe SST 90 and a driver for triple SST 90, and this has to be specified when orrdering...??

    I have just read the datasheet, but I steel don`t understand....
    Last edited by jezdec; 01-09-2012 at 11:14 AM.

  21. #231

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    it regulates the current, not voltage. If you hook up a single LED the driver will regulate current to 9A and the output voltage will set automatically to the forward voltage of the LED. With more LEDs the voltage will rise up at 9A.

  22. #232
    Enlightened
    Join Date
    Dec 2011
    Location
    Slovenia
    Posts
    87

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    OK...I give up...this is too much for me.
    But OK I undersand that I can connect from 1 to 5- SST 90 and use input voltage from 7 to 22 volts,
    as long as I have input voltage 2V above output voltage....and the driver will do the rest.

    Am I right?

  23. #233

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    yes, that's right

  24. #234
    Enlightened
    Join Date
    Dec 2011
    Location
    Slovenia
    Posts
    87

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    OK..thank you

  25. #235

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    receved drivers today Thanks

  26. #236
    Unenlightened
    Join Date
    Jul 2011
    Posts
    1

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    Hello,

    It seems that since i don't have enough posts, i cannot PM you. So in that case... i would be interested in purchasing one of your 9A drivers. I have sent you an email to that effect earlier today and eagerly await your reply.

    I am also quite new to the wonderful world of electronics. If I were to utilize a piezo switch to run this driver, what would i need to get it to work? I realize that piezo switches only produce a momentary signal and i would have to use a toggle circuit of sorts but I am unsure how to do this. ANY help would be greatly appreciated.

    Also i have searched the web for quite some time and although i have found a few apparently "simple" toggle circuit diagrams, I can't seem to wrap my head around them.

    Thank you

  27. #237

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    is there wiring diagram for this powerful driver?, pdf manual does not included diagram. Cheers

  28. #238

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    on the first page in the datasheet is a wiring diagram

  29. #239
    Unenlightened
    Join Date
    Oct 2009
    Location
    Jyvaskyla, Finland.
    Posts
    5

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    DW, it seems to me that I fried the 9A buck driver that I bought from you. I used it to drive the thermoelectric cooler, normally not exceeding 15V 2A on input and not operating continuously, but recently I applied 19V from battery (6s of almost empty LiFePO4) and the driver gave no output. I have some suggestions why it could fail.
    Is there any way for me to repair the driver? May I send it back to you for repair (and how much $$ )? Meanwhile I need another 9A adjustable driver, maybe even two of them. PM sent.
    PS. Can you increase the input voltage rating of these drivers to 30V (next steps - 45V and 60V) ?

  30. #240

    Default Re: High efficient 5A/9A Buck Converter for SST-50, SST-90

    pm sent for repair.

    There is no way to increase the input voltage to 30V or above with the current design. For higher levels I have to build a complete new driver which would be much bigger

Page 8 of 10 FirstFirst 12345678910 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •