CCS/LP5024: LP5024 about color mixer and brightness control

Tool/software: Code Composer Studio

Dear,

have any test report about TIDA-050011, we have some question about color mixer and brightness control.

However, at the ultra-low brightness levels required to slowly illuminate a completely dark room,

the PWM step increments showed obvious shelving at PWM color-mix values < 10

 
as below schematic:

LED Side Board A0.pdf

If any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence.