TPS92612-Q1: LEDs flashes randomly for a low PWM, umbral between LED ON/OFF. At this point, light control with PWM is not continous.

Hi,

I'm using TPS92624-Q1 with the same schematics as described in the datasheet, with Rsns=1.2R, without Rp, and 7 series LED for 24Vdc supply voltage.

This frame is repeated 5 times, all in parallel with supply voltage. And all frames share the same inverse polarity protection diode. And all frames share the input PWM control line.

All operate OK, but when it works with PWM control, if duty cycle is at the point between LEDs ON - LEDs OFF (very low PWM), each frame of 7 LEDs flashes randomly. At this point, light control with PWM is not continous.

I thans you this forum.