TPS63070: Internal pull up/down in the PS/SYNC pin?

Shinya Sawamoto

Part Number: TPS63070

Hello team,

Let me ask a quick question.
Is there an internal pull up/down in the PS/SYNC pin?
I'd like to know if we can open the PS/SYNC pin or needed external pull up/down?

Thanks in advance.
S.Sawamoto

over 6 years ago

0 Helen chen over 6 years ago

TI__Mastermind 40080 points

Hi Sawamoto,

For the TPS63070, PS/SYNC pin works in this way: Pull to low for forced PWM, pull high for PWM/PFM (power save) mode. Apply a clock signal to synchronize to an external frequency.

Why do you need to let it open?

0 Shinya Sawamoto over 6 years ago in reply to Helen chen

TI__Expert 5315 points

Hi Helen,

Thanks for the reply.
In the external synchronize mode, which should be the pin pulled when the external input is stopped and becomes HIZ state?
Should we need to add an external pull down if we'd like to set it FPWM on the HIZ state?

Regards,
S.Sawamoto

0 Helen chen over 6 years ago in reply to Shinya Sawamoto

TI__Mastermind 40080 points

Hi Sawamoto,

Thanks for the update.

Do you mean the TPS63070 is still working in the HIZ state? if it is, you can add an external pull down to set it in the FPWM mode in HIZ state.

Power management

Power management forum

TPS63070: Internal pull up/down in the PS/SYNC pin?