2.5kV USB2.0 Isolator with 400mA supply and full speed (12Mbit/s) support

• This project is used to verify the solution verification board design of the Lichuang Mall isolator chip/ADUM3160BRWZ.
• This project is  a solicitation project for Lichuang EDA open source hardware platform  solution verification module .

Introduction

On a desktop, the USB port's GND signal is usually at the GND level of the electrical equipment in the building. So even if the USB device has isolated power and is isolated from ground, that isolation will be bypassed by the USB connection. In some cases this is undesirable, for example for measuring equipment it may be necessary to use some potential in the circuit as a reference rather than a common ground. In addition, if the USB device experiences an electrical failure, there will also be problems with the direct connection of the 5V and GND lines between the USB device and the PC. For example. If a measuring device experiences a catastrophic short circuit, it can damage the PC. So there are good reasons to use USB isolators - it's just that they are often expensive. Likewise, most of them cannot provide connected USB devices. Typically you need to connect a power supply on the USB slave side (behind the isolation barrier) which is not very convenient.

Main components

• Power module DC-DC/ IB0505S-2W
• Isolator chip/ADUM3160BRWZ
• TVS tube, common mode inductor, magnetic beads

Function description

• The input adopts typec interface and has ESD protection.
• The input and output are isolated using an isolator chip/  ADUM3160BRWZ
• The front stage supplies power to the rear stage through Jinshengyang isolated power supply.
• The output adopts USB2.0 A female interface
• 400mA output capability (MAX)
• TL431 does the lowest load (40mA)
• Anti-emi treatment was performed, and common mode inductors and other devices were added.

  physical object