【TUSB1105】incidence of the suspend

Takao Yamamoto

Genius 4135 points

Dear all,

My customer made static valuation of their USB product using TUSB1105RGTR.

And they found out about incidence of the suspend through radiation of 8kV indirect discharge.

Please teach me about improvement plan.

Best regards,

0 Elias Villegas M. over 9 years ago

Hello,

Can you elaborate more on what do you mean by "incidence of the suspend"

Regards

0 Takao Yamamoto over 9 years ago in reply to Elias Villegas M.

Genius 4135 points

Hello,

We set up folowing two conditions to evaluate the suspend.

１．Decrease of power consumption at CPU

２．Light up LED in the suspend by host PC's software

We caught "incidence of the suspend" by above ways.

* Static valuation was run trough IEC61000-4-2.

In addition,

Is this circuit design OK to do well?

Best regards,

0 Elias Villegas M. over 9 years ago in reply to Takao Yamamoto

Hello,

Are you saying that the SUSPND input is detecting a "high" level when you perform the ESD test?

The SUSPND input is only rated for 7kV HBM.

Regards

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