TPS65217: Vbat to Vsys

kura

Genius 4840 points

Part Number: TPS65217

When AC and USB are not connected ,System need power only from Battery.

In this case,does they need external Switch beween Vbat and Vsys?

over 8 years ago

0 Paul Kundmueller over 8 years ago

TI__Intellectual 1990 points

Hi kura,

Thanks for the post! I will get back to you shortly with an answer.

Regards,

Paul Kundmueller

0 Paul Kundmueller over 8 years ago in reply to Paul Kundmueller

TI__Intellectual 1990 points

Hi Kura,

TPS65217 offers an internal power path for AC, USB, and BAT inputs. Could you provide a little more information on your system and what you trying to accomplish with an external switch between VBAT and VSYS?

Regards,

Paul Kundmueller

0 kura over 8 years ago in reply to Paul Kundmueller

Genius 4840 points

Paul-san

Thank you for your reply.

We would like to know how to VSYS get power from Battery,When AC and USB off.

0 Jayanth Kruttiventi over 8 years ago in reply to kura

TI__Intellectual 1360 points

Kura,

WHen AC and USB are off, the system does not need any external switch. Please refer to figure 10 in the spec, if the input supply is not detected, the back gate control is enabled and VSYS is powered by internal switch.

Jay

Power management

Power management forum

TPS65217: Vbat to Vsys