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Looking for LED driver for 100W 70-75V 2A LED from 9-12V sourc

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.