This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS61197: Dimming by turning on and off the boost converter

Part Number: TPS61197

Dear Ti Team,

I am trying to do some dimming using turning on and off boost converter so i have only one mosfet.

I tied PWM pin to 5V and i applied PWM signal on EN pin.

My problem is: 

    - if PWM is 100% duty cycle, the leds light up to the nominal current

    - if PWM is below 100% duty cycle the leds remains in off state.

Do you know what could happen ?

Regards,

Nicolas.