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FAQ
How much capacitor can VBUS use when using the USB function? Issue Date：2017-04-26
The VBUS capacitors need to comply with the USB-IF specification inrush current. For USB 2.0, the USB-IF defined that inrush current could not exceed 50 uC. Therefore, if the VBUS normal voltage is 5.0V (Q = CV), the VBUS capacitor shall not exceed 10 uF.
Users need to design their own circuit, and adjust the VBUS capacitor. With the USB analysis tool USBET20 provided by USB-IF, user can see if the VBUS capacitor conforms to the USB-IF specification.
| Products: | Microcontrollers ,Arm Cortex-M0 MCUs ,Nano120 USB Series ,Nano130 Advanced Series ,NUC120/122/123/220 USB Series ,NUC140/240 Connectivity Series ,Arm Cortex-M4 MCUs ,M452 USB Series ,M4TK Touch Key Series ,NUC442/472 Series ,NUC505 Series |
|---|---|
| Applications: | |
| Function: | Peripherals,Connectivity,USB |