TPS628502-Q1: FPWM / PFM mode change

Masatoshi Oguri

Part Number: TPS628502-Q1

Hi,

Can MODE pin controlled after the device is powered up? Back and force between FPWM and PFM dynamically during the device operation. Thank you.

Regards,

Oguri (TIJ automotive FAE)

over 3 years ago

0 Tanvee over 3 years ago

TI__Genius 13440 points

Hi Oguri,

It is recommended to not leave the Mode pin floating and if you planning to control it with an external signal then I would not expect a critical issue. Could you share how are you planning to control it?

However, you can select the mode pin as auto mode so when there is a load device goes into PWM and for the remaining time it will stay in PWM mode.

Best rgerds,

Tanvee

0 Masatoshi Oguri over 3 years ago in reply to Tanvee

TI__Expert 4780 points

Hi Tanvee,

The customer want the circuit in CCM (FPWM) when the system is active even though the load current is, say 1mA. While, when the system is in sleep, the circuit is in PFM. Thank you.

Regards,

Oguri (TIJ automotive FAE)

0 Tanvee over 3 years ago in reply to Masatoshi Oguri

TI__Genius 13440 points

Hi Oguri,

Thanks for the details. I am closing the thread feel free to reach out to us for more details.

Best regards,

Tanvee

Power management

Power management forum

TPS628502-Q1: FPWM / PFM mode change