Tool/software:
I want to use the TPS923653 in analog dimming mode.
With a PWM frequency of 1kHz on ADIM/HD I should be able to have a resolution of 8-bits.
However, when I enable the device ("H" on the EN/PWM pin) and then start the PWM on ADIM/HD, the part returns an error on the FAULT line when I use one of the first 3 steps (so duty cycle 0.39%, 0.78% and 1.17%).
From step 4 on, all operates as expected. So steps 1, 2, 3 not working, steps 4..255 working
The signal timing is as follows:
Can anyone explain what is happening? Actually I don't need to use the driver at such a low duty cycle, but I need to understand what is going on.
Ben
