LP8864S-Q1: pwm detector hysteresis

Dongbao Zhou

Part Number: LP8864S-Q1

hi team,

could you explain the highlight description of "pwm detector hysteresis" in LP8864 datasheet?

If the minimum pwm input on-time change is 6.4us, the overall pwm input resolution is pretty low which doesn't match the datasheet description (at least 10bit in 20kHz). Is it a typo, it shall be 6.4ns?

Regards,

Dongbao

over 1 year ago

0 Patrick Yao over 1 year ago

TI__Mastermind 34780 points

Hi Dongbao,

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

Patrick

0 Zhiqian Wu over 1 year ago

TI__Mastermind 31445 points

Hi, dongbao

I will check with our designer, as it is a holiday, I will give you a feedback after the holiday.

0 Dongbao Zhou over 1 year ago in reply to Zhiqian Wu

TI__Expert 4170 points

Any update? Zhiqian

0 Zhiqian Wu over 1 year ago in reply to Dongbao Zhou

TI__Mastermind 31445 points

HI, Dongbao

6.4us is correct. This is the hysteresis of PWM detector. It will not influence the resolution of PWM input.

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LP8864S-Q1: pwm detector hysteresis