Recommended Power Supply Circuit Diagram for FX3S

NaMo_1534561 · ‎Mar 26, 2019

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

HirotakaT_91 · ‎Mar 29, 2019

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.

Best regards,

Hirotaka Takayama

Re: Recommended Power Supply Circuit Diagram for FX3S