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USB Superspeed Peripherals

NaMo_1534561
Contributor II

Hello,

Is there a recommended power supply circuit diagram when using fx3S with self power?

Please tell me about the processing of the VBUS and VBATT terminals.

Best Regards,

Naoaki Morimoto

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1 Solution
HirotakaT_91
Moderator
Moderator

Hi Morimoto-san,

Thank you for sharing detailed information.

Your suggestion seems good except VBATT setting.

In case of the VBATT usage, CYUSB3KIT-001 schematic might be helpful.

On your suggested power supply, FX3 is not supplied any power when USB (VBUS) is not connected to it.

In case of self-powered device, VBATT can use for resolving above issue.

Following graphics are excerpts of CYUSB3KIT-001 schematic.

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pastedImage_1.png

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Best regards,

Hirotaka Takayama

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