Hello.
I've been tasked to create a backlight driver which can dim to '0'. I've recently been playing with the TPS61177AEVM which has been a great start but I'm wondering if and how the output current can be taken below 1% input duty cycle reliably?
I have tried this by inputting a 5V 450Hz PWM signal and at 0.21% duty there is a weird step between being off to a clearly visible image. Noticeably with a PWM freq of 13kHz and above the weird step at 0.21% is removed but the display slightly flashes at around 0.07% Duty.
I will be using a light meter soon to provide you with real values instead of the varies types of 'dim'.
I hope you can help.
Kind regards.
