My LED specifications are:
Size: 34*34*1.0mm
Power: 100W
Current: 2A
Voltage: 70-75V
Peak Irradiance: 8W/cm2
Viewing Angle: 60 degree
Chips Arrays: 40 chips, 20 in Series 2 in Parallel
I have searched it out LT3755 and LT3956 but need some expert opinion.