66AK2G02: DC Spec of USBi_VBus Pin

miki

Part Number: 66AK2G02

Please tell us about the USBi_VBUS terminal as follows.
1) + 5.25 V input is acceptable?
2) Is it OK to think that voltage application at the time of power OFF is also permitted?
3) Are there any materials that contain absolute maximum ratings and DC specifications?

over 8 years ago

0 Yordan Kovachev over 8 years ago

TI__Guru**** 161600 points

Hi,

I am looking into this. I will post my findings here.

Best Regards,
Yordan

0 Yordan Kovachev over 8 years ago

TI__Guru**** 161600 points

Hi,

See Section 11.19.3 USB2.0 Subsystem Application from 66AK2G02 Technical Reference Manual, it provides quite useful information.
To answer your questions:
1) It should handle 5.25V, BUT the TYPICAL (recommended) value is 5V.
2) I think it is failsafe, but let's wait for the factory team to confirm here.
3) There is the device Datasheet, see Section 5.1 Absolute Maximum Ratings & Section 5.7 Electrical Characteristics.

Best Regards,
Yordan

0 Bill Taboada over 8 years ago

TI__Mastermind 42545 points

Hi Miki,
I can confirm that the VBUS pin is failsafe and can have the external voltage applied before the K2G is powered.
Regards,
Bill

0 miki over 8 years ago in reply to Yordan Kovachev

Intellectual 280 points

Thankyou
>1) It should handle 5.25V, BUT the TYPICAL (recommended) value is 5V.
>3) There is the device Datasheet, see Section 5.1 Absolute Maximum Ratings & Section 5.7 Electrical Characteristics.
What is the absolute maximum ratings of "USB0_VBUS / USB1_VBUS pins"
(I can not find the "USB0_VBUS/USB1_VBUS pins" in Section 5.1.)

0 Yordan Kovachev over 8 years ago in reply to miki

TI__Guru**** 161600 points

Hi,

The table in Section 5.1 Absolute Maximum Ratings says:
VIO (transient overshoot and undershoot):
Input and output voltage ranges (transient overshoot and undershoot)(4) 20% overshoot /undershoot for 20% of signal duty cycle.

Best Regards,
Yordan

0 miki over 8 years ago in reply to Yordan Kovachev

Intellectual 280 points

Thank you for your reply.

The table in Section 5.1 shows the absolute maximum ratings for I/Os 1.35V, 1.8V and 3.3V;
but it says nothing about I/Os 5V (USB0_VBUS, USB1_VBUS).

Is the absolute maximum ratings for 5V (USB0_VBUS, USB1_VBUS) undefined?

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66AK2G02: DC Spec of USBi_VBus Pin