保利广州鱼珠改造项目城市设计.pptx

1
Leiditech ESD introduction
TVS/ESD
2
Ports protection1
pin directly short to USB’s Vbus plate, No trace connection.
pin directly short to USB’s GND plate, No trace connection.
can NOT be placed at the boundary of different power Plates.
’S I/O pin first, then connected to the controller
3
Ports protection2
pin directly short to USB’s VBUS plate, No trace connection.
pin directly short to USB’s GND plate, No trace connection.
+/D- Pin directly short to USB’s D+/ D- line.
’S I/O pin first, then connected to the controller
4
3. Ports protection1
1. 4 pics GDT as first lever Surge protect
2. 4 pics ESD directly short to ’s data line as differential mode protection
3. IEC 61000-4-2 Level 4 (ESD) -- 8kV / 15kV
61000-4-4 EFT 4KV
5
4. Ports protection2
1. 4 pics GDT as first lever Surge protect
2. 2 pics ESD directly short to ’s data line as differential mode protection
3. IEC 61000-4-2 Level 4 (ESD) -- 8kV / 15kV
61000-4-4 EFT 4KV
6
5. Ports protection3
Pin SRV05-4 short to ’s data line with 4 data pin.
pin directly short to Board’s GND plate.
connected to GND with Capacitance.
61000-4-2 Level 4 (ESD) -- 8kV / 15kV
SRV05-4
7
Ports protection
SRV05-4
or
solution use two pics SRV05-4.
SRV05-4’S data pin short to DVI data.
61000-4-2 Level 4 (ESD) -- 8kV / 15kV
8
Ports protection
SRV05-4
or
solution use two pics SRV05-4.
SRV05-4’S data pin short to VGA data line.
pin directly short to Board’s GND plate.
connected to GND with Capacitance.
61000-4-2 Level 4 (ESD) -- 8kV / 15kV
9
Ports protection
10
Ports protection
2*ULC0568M