TPS63900: Negative going Undervoltage Lockout

Timothy Waack

Prodigy 60 points

Part Number: TPS63900

Hello,

The TPS63900 datasheet is missing Negative-Going UVLO threshold voltage.

What is the min, typ, max of this parameter?

Thank you,

Tim

over 2 years ago

0 Tao Zhang over 2 years ago

TI__Mastermind 22460 points

Hi Tim,

please take followed picture as reference

Regards

Tao

0 Timothy Waack over 2 years ago in reply to Tao Zhang

Prodigy 60 points

Hi Tao,

According to the TI application note below UVLO threshold voltage hysteresis is not the same parameter as Negative-going UVLO threshold voltage.

slva769a.pdf

Thank you,

Tim

0 Tao Zhang over 2 years ago in reply to Timothy Waack

TI__Mastermind 22460 points

Hi Tim,

that is right, for i can not find date about Negative-going UVLO yet, but i think we can get Negative-going UVLO from Positive-going UVLO and hysteresis. how do you think about this.

Regards

Tao

+1 Timothy Waack over 2 years ago in reply to Tao Zhang

Prodigy 60 points

I read the app note again, and I think I understand using positive going and hysteresis to get negative going UVLO is acceptable.

My doubts were due to table 2. But the paragraph below explains how all three are related.

0 Tao Zhang over 2 years ago in reply to Timothy Waack

TI__Mastermind 22460 points

Hi Tim,

good job, see you next time if you need.

Regards

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TPS63900: Negative going Undervoltage Lockout