AM5708: Low power mode

shigehiro tsuda

Part Number: AM5708
Other Parts Discussed in Thread: AM5706, TPS65916

Hi,

Our customer is using the combination of AM5706 and TPS65916.

They would like to make it as low power as possible.
Please tell me what power supply can be turned off with the power of the module not used when sleeping.

vdd_gpu
vdd_dspeve
vdd_iva
vdda33v_usb1
vdda33v_usb2
vddshvX(Other than power supply supplied to gpio1)

Best Regards,
Shigehiro Tsuda

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

Hi,

See section 3.9 in the AM570x TRM Rev. G, especially Table 3-367.

0 shigehiro tsuda over 8 years ago in reply to Biser Gatchev-XID

Mastermind 9490 points

Hi Biser,

Thank you for quick reply.
I saw Table 3-367.
I think the AM5706 does not support RTC only mode, is it correct?

Table 3-367 seems to have no description of the state of IO voltage.
Is it no problem even if IO voltage (vddshvX) of module not being used at sleep is set to 0V?
This means that the power supply from the PMIC (TPS65916) is turned off (0 V).

Best Regards,
Shigehiro Tsuda

0 Biser Gatchev-XID over 8 years ago in reply to shigehiro tsuda

TI__Guru**** 393215 points

Correct, RTC-only mode is not supported. This is clearly written in red at the beginning of section 3.9.
All power supply voltages MUST be ON during device standby.

0 shigehiro tsuda over 8 years ago in reply to Biser Gatchev-XID

Mastermind 9490 points

Hi Biser,

Thank you for quick reply.
I understand that all power supply voltages must be ON during device standby.

Best Regards,
Shigehiro Tsuda

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AM5708: Low power mode