TPS53659: PMBUS spec confusion

bryan zheng

Part Number: TPS53659

Hi E2E,

I am simulating PMBus that connect with TPS56359, but the datasheet does not defind input logic voltage to refer.

As I know, it follows SMBus specification.

Should I just follow the definition of VIH and VIL in SMBus specification to calculate rising and falling edge? (VIL=0.8V and VIH=1.35V)

Or I should follow the VIH and VIL in chapter 4.11. (VIL=0.45V and VIH=0.65V)

Please help to clarify it.

Bryan

0 Qian Chen over 5 years ago

Hi Bryan

It is US holiday now. Our engineer will reply to you next Monday.

Sorry about it.

Thanks

Qian

0 bryan zheng over 5 years ago in reply to Qian Chen

Hi Qian,

Got it.

Really appreciated.

Bryan

0 Chasel Chen over 5 years ago in reply to bryan zheng

Hi Bryan,

Please follow SMBUS/PMBUS specification. The value in 4.11 is for Intel SVID protocol.

Thanks

Chasel

0 bryan zheng over 5 years ago in reply to Chasel Chen

Hi Chasel,

Thank you.

Bryan

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