TPS55288: UVLO behavior

user6172070

Prodigy 70 points

Part Number: TPS55288

Hi guys.

I want to know UVLO behavior.

What happens to the resistor state after UVLO works.

Keep the setting or becoms to default setting?

Thank you and best regards.

over 3 years ago

0 Zack Liu over 3 years ago

TI__Mastermind 34201 points

Hi Sir,

Do you mean register? No resistor.

When the EN/UVLO pin voltage is pulled below 0.4 V, the TPS55288 is in shutdown mode, and all functions are disabled. All internal registers are reset to default values.

0 user6172070 over 3 years ago in reply to Zack Liu

Prodigy 70 points

Hi Mr Liu.

Thank you for reply. Resitor is my mistake.. resister is correct.
Is this shutdown mode not related VIN votage?
I use internal regulator for Vcc. I think this regulator is build between VIN and GND.

So, I think VIN voltage is also effect this behavior.

Thank you and best regards.

+1 Zack Liu over 3 years ago in reply to user6172070

TI__Mastermind 34201 points

Hi Sir,

If VIN voltage is less than VIN_UVLO, the register will also be reset to default values.

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TPS55288: UVLO behavior