PMUoz0B

Based on FE8.1-USBHUB2.0

 
Overview

It has been tested that a Typec interface can realize data transmission, and a Typec power supply interface is provided (maybe more stable). The DC interface has not been tested
and welded to the part as shown. It can be used normally.
The capacitors are all 0805, and the resistors are all 0603. Because I There are 0805 capacitor sample books and 0603 resistor books. There are many components. If you want less space, you can replace the 0402 packaged
magnetic beads. In theory, they should be replaced with 0 ohm resistors. It is best to have the SS54 diode voltage drop as small as possible (because USB voltage is 5V, I actually use SS54L)
 
9.23:
There is a problem with the DC interface function. It will burn the main control. Just delete it later. You can also refer to the voltage stabilizing circuit. At least the voltage is OK. It should be caused by DC access. The pulse signal burns the main control
 
9.24:
Add a pull-down resistor to the anode of the diode to handle the reverse leakage current.
Delete the DC power supply part
and it should be able to be used normally.
 
I refer to the open source engineering projects of the big guys. Thanks
to the FE8.1-USBHUB hub-Jia Lichuang EDA open source hardware platform (oshwhub.com)
http://www.61ic.com/circuit-2489.html
USB Hub FE2.1 - Jialichuang EDA open source hardware platform (oshwhub.com)
参考设计图片
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