I'd be interested in hearing anyone's experiences with HID lamps

- operating
- dimming.
- making controllers.

Related stuff below.
________________


I'm looking at what is involved in operating & controlling HID (High
Intensity Discharge) lamps.
Nasty brutes.
My application is ultra low volume so a commercial controller will probably
suffice.
(I'm looking at making small "1 sun" light sources, but LEDs look more
attractive overall.
Brightness control is desirable.

Conditions: Typically may be 5 kV strike, 25 kV warm restrike, 80 Volt
operate, 20V run with ramp up over about 2 minutes from striking.
100+ lumen / Watt (exceeded only by the best LEDs so far).
2000 - 3000 - 20000 -  ... hours longevity (depends on brand, spec, source
of claim).
Capital cost: Lower lumen/$ than LEDs.
Lifetime cost - give LEDs a run for their money.


Philips 2001 draft fact sheet / app note for their UBA2302 HID controller IC


http://www.nxp.com/acrobat_download2/various/factsheet_70w_hid_with_uba_2032.pdf

App note IR / ECN May 2010
IRS2573D HID controller IC app note and circuit.

 http://www.ecnmag.com/blog/2010/05/tech/Creating-an-HID-Ballast.aspx

IR home page for above IC
$2.84/1k

https://ec.irf.com/v6/en/US/adirect/ir?cmd=catProductDetailFrame&productID=IRS2573DSPBF

Reference design available
Overpriced at $US250 ish / 1K !!!
Does provide Gerbers, parts lists etc.

https://ec.irf.com/v6/en/US/adirect/ir?cmd=catSearchFrame&domSendTo=byID&domProductQueryName=IRPLHID2

IR HID controller design aspects discussion 2006
4 pages
       http://powerelectronics.com/mag/610PET22.pdf

Chinese paper. Tianjin polytechnic university.
35W HID controller. UCC3305 based
5 pages. useful.
 http://www.ccsenet.org/journal/index.php/mas/article/viewFile/4591/3930

TI / "Unitrode UCC3305 3205 datasheet
http://focus.ti.com/lit/ds/symlink/ucc2305.pdf


IEEE abstract
Constant power controller

http://ieeexplore.ieee.org/Xplore/login.jsp?url=http://ieeexplore.ieee.org/iel5/10182/32506/01518509.pdf%3Farnumber%3D1518509&authDecision=-203

Patent claiming constant brightness innovation
http://www.freepatentsonline.com/6779896.html

Gargoyle has much to say
http://www.google.co.nz/#hl=en&q=hid+controller+circuit&aq=f&aqi=&aql=&oq=&gs_rfai=&fp=29d386fc52047408



                Russell McMahon
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