Cree XB-D driver circuit Answered
I would use following design with some modifications to be able to drive 3x3 Cree XB-D LEDs Green/Blue:
I would use 12V ATX computer PSU as voltage source.
PWM source: Arduino nano
Attached picture show how I modified the design: 3x3 LED setup
My main concern, is it correct my calculation of LED currents: based on my understanding, 220mohm current sense resistor setup 2,272A current through FET. Based on Kirchhoff's current law, it will be 757mA for 1 LED.
Is that correct?
Any advise and suggestion would highly welcome.