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I'm really not sure what you are asking for. The power supply part is challenging but not unduely difficult. What I don't understand is "1w leds 36nos". Does that mean you want a power supply that is capable of lighting 36 LEDs, where each LED consumes 1 watt at some voltage between 9 and 20 volts. Did I get that right?
actually i hav chosen a 1w high power led from NICHIA corp. also we havent desided to make a linear or switching coz as soon as we make a prototype only we will decide which will b better in efficiency and also economic.
if it is better to buy a cheaper module, can u suggest me some local suppliers so that it will be easy for me to go for it.