1st test: Voltage divider 4K7-4K7 using TPS56637 5V 5A drop-down circuit.


ADC readings for voltage-divider:


9VDC wall adapter, 63-66
XP-581 set at 9VDC, 61-64
XP-605 set at 9VDC, 62-64
what any of that actually means needs way more explanation

more importantly what does the power rail look like noise wise ?


Used 270R resistor for backlight, disabled all PWM/HPWM functionality on code:
i assume that's now one resistor per each backlight

what is the volts across the backlight resistor ?

did you ever measure backlight current @ 5v ?