TPS65142: TPS65142 VFLK and VGHM can floating?

Lawrence He

Genius 3280 points

Part Number: TPS65142

Dear,

we saw the TPS65142 datasheet typical application, VFLK PIN and VGHM PIN was floating?

or MCU GPIO control VFLK?

If any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence.

over 5 years ago

0 Henry Wang over 5 years ago

Intellectual 700 points

Dear Sirs,

This customer also has below questions.

1. May I use the TPS61542 to replace Skyworks/ AAT2823?
2. VFLK (Pin 22): does it need or not add external pull up/down resistor, the value of a resistor?
3. VGHM (Pin 24): this function for what application?
4. OPI (Pin 30): the resistor value of R10?
5. XAO (Pin 7): pulling up 3.3V when disable?

0 Henry Wang over 5 years ago in reply to Henry Wang

Intellectual 700 points

Dear Sirs,

Any update?

0 Shinya Morita over 5 years ago in reply to Henry Wang

TI__Mastermind 33525 points

Hi,

I have notified our expert regarding this topic. Please expect a response by 8/13/19.

Thanks,

Shinya

0 Shinya Morita over 5 years ago in reply to Shinya Morita

TI__Mastermind 33525 points

Hi,

1. We do not have AAT2823 information and could not tell replacement is possible or not.

Other questions will be supported by expert by 8/16/19.

regards

Shinya

0 Costin Cazana over 5 years ago in reply to Henry Wang

TI__Expert 4940 points

Hi Lawrence,

2&3. VFLK is the voltage shaping control signal, VGHM is the output. Both can float when this function is not needed.

4. R10 and R3 are AVDD voltage divider for Vcom input voltage

5. XAO is open drain output used to monitor the internally generated reset

Regards,

Costin

Power management

Power management forum

TPS65142: TPS65142 VFLK and VGHM can floating?