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Vbus Bypass capacitor

Expert 1125 points

Other Parts Discussed in Thread: MSP-TS430PN80USB

Hi,

 

What is the maximum bypass capacitor that could be connected across the Vbus line.

It seems that MSP-TS430PN80USB's circuit has 4uF(C39) connected across the Vbus

whereas the in the document  "Starting a USB Design Using MSP430 MCUs.pdf"  there is a reference design  "figure 10" 

in which there is no such bypass capacitor across Vbus pin.

should we follow the design according to MSP-TS430PN80USB?

And also is it necessary to connect shield through 33K?

 

Thankyou in advance.

Regards.

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