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USB Hosts Hubs Transceivers

edfr_1130341
New Contributor

Hi,

The USB3 hub CYUSB330x requires 3.3V analog power supply. In the DVK external power supply is used to derive these voltages. How can i design self-powered USB3 hub that uses VBUS only?

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Sananya_14
Moderator
Moderator

Hi,

Please confirm if you want a bus powered hub design which uses VBUS for supply? You can directly use VBUS with a 3.3V regulator instead of deriving 5V (VCC_5V) from an external power supply. When the hub is bus-powered in the DVK as well, VBUS is connected to VCC_5V which provides 3.3V and 1.2V.

Best Regards,

Sananya

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Sananya_14
Moderator
Moderator

Hi,

Please confirm if you want a bus powered hub design which uses VBUS for supply? You can directly use VBUS with a 3.3V regulator instead of deriving 5V (VCC_5V) from an external power supply. When the hub is bus-powered in the DVK as well, VBUS is connected to VCC_5V which provides 3.3V and 1.2V.

Best Regards,

Sananya

View solution in original post

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