USB 2.0 protection scheme

一、 The application background
1. Usb support hot plug;
2. USB2.0 maximum transmission bandwidth at 480 MBPS;
3. USB2.0 vulnerable to electrostatic damage;


二、 The scheme in this paper
1. In the usb power cord VBUS, adopt protection IC chips.
2. In the usb cable USES a TVS, junction capacitance is small, low residual, fast response speed, can satisfy the demands of USB2.0 high-speed transmission.
3. Can through the ESD IEC61000-4-2 Level 4 Contact Discharge: 8 kv, Air Discharge: 15 kv test.


三、 Project information is as follows: