USB 3.0 HUB Expansion Dock Based on TUSB8041

 
Figure 1 Original physical image
 
 
 
Figure 2 Revised 3D drawing
 
Using JLCPCB's four-layer 3313 laminated structure,
the power supply section has been revised with a 1.6mm board thickness. When drawing the schematic, a capacitor was forgotten at CH224K, causing it to not work. A jumper wire was added and tested, and it works fine. The open-source version has been corrected.
 
 
 
(a)
 
 
(b)
 
Figure 3 Forgotten capacitor
 
The power switching section is implemented using two PMOS and two NMOS. The LED lights up on whichever side has power. It is recommended to use LEDs of different colors for differentiation.
The 1.1V power supply has an RC delay start to meet the power-on sequence required by the main controller.
 
 
Figure 4 Power switching circuit
 
The speed was tested using a Netac WH61 hard drive enclosure (Figure 5(a)). The speed of the hard drive enclosure directly connected to the computer is shown in Figure 5(b).
 
(a)
(b)
Figure 5 Speed ​​test
 
This design uses JLCPCB's free PCB+SMT fabrication. Except for VL160, all can be purchased from the LCPCB online store.
Because SMT was used, some capacitors were in 0201 packages, which are more difficult to solder. Those who are making their own boards and soldering them themselves can replace them with 0402 package capacitors.
 
The USB 2.0 data cable on the CH224K side is for fast charging protocol communication; the speed is not high, and strict length matching is not required. Please ignore the DRC error here.