TPS61169: CTRL pwm voltage

Rangel Moreira Fischer

Part Number: TPS61169

Hi,

I would like to know If i power the vin of tps61169 with 3.3V, and the CTRL pin with a pwm signal voltage of 1.8V, it works or not works.

I read the datasheet and in page 10 is written: "The enable rising edge threshold voltage is 1.2 V", so i would to confirm if it is the case with a square pwm signal of 1.8 volts too.

Thank's.

over 1 year ago

0 Jared Zhou over 1 year ago

TI__Genius 17795 points

Hi Rangel,

Our expert is out of office and will reply to your questions once coming back. Thanks for your patience.

BR, Jared

0 Patrick Yao over 1 year ago

TI__Mastermind 28960 points

Hi Rangel,

I think it is okay to use this 1.8V PWM.

Patrick

0 Rangel Moreira Fischer over 1 year ago in reply to Patrick Yao

Prodigy 100 points

Hi @Patrick Yao,

I need to be sure because i am developing the printed circuit board.

Thank`s.

0 Patrick Yao over 1 year ago in reply to Rangel Moreira Fischer

TI__Mastermind 28960 points

Hi Rangel,

The 1.2V is the minimum high level voltage, so voltage above this threshold will also be treated as logic high. 1.8V is okay.

Patrick

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TPS61169: CTRL pwm voltage