TPS65987D: 0x28 VBUS_OvpUsage accuracy

Anderson2

Part Number: TPS65987D

Hi,

If 0x28 bit 14:13 VBUS_OvpUsage are set to 10b, VBUS will be disconnected when VBUS voltage exceeds the expected voltage by 10%.

Would you tell me "10%" accuracy? I'd like to know min and Max value variation.

over 6 years ago

0 Rahul Sharma16 over 6 years ago

TI__Expert 6430 points

Hi Anderson,

By 10% accuracy we mean that VBUS voltage is allows to go 10% lower or 10% higher compared to the nominal voltage od negotiated PDO.

For example, if the system picks 20V PDO, then the VBUS is allowed to vary from 18V to 22V.

Please click "This resolves my issue" if I was able to answer your query.

Thanks,
Rahul

0 Anderson2 over 6 years ago in reply to Rahul Sharma16

Expert 1035 points

I think this mean if the system picks 20V PDO, then VBUS is allowed up to 22V.(20*110%)

I want to know 22V accuracy in this case.

I think chip has manufacture irregularity. Typical is 22V. How about min and Max?

0 Rahul Sharma16 over 6 years ago in reply to Anderson2

TI__Expert 6430 points

The measurement tolerance is around 5%.

Which means 22V can be 20.9V to 23.1V.

Thanks,
Rahul

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TPS65987D: 0x28 VBUS_OvpUsage accuracy