APPLICATION
>> Application background
1 Global warming, and the thunderstorm weather increased.
2 POE power and signal coexistence, so the difficulty of protection increased.
>> Program description and notes
5 This POE port program to meet the IEC61000-4-5, GBT17626.5 and other surge test standards.
6 This POE port program to meet the IEC61000-4-2, GBT17626.2 and other static test standards.
7 Pass through 10/700us (resistance 40ohm) and 1.2/50-8/20us surge test.
>> Application:
1 POE power supply
2 POE separator
3 POE connector
1 Global warming, and the thunderstorm weather increased.
2 POE power and signal coexistence, so the difficulty of protection increased.
>> Program description and notes
1 This scheme uses GDT to do common mode (eight wire) surge protection at the front end of the transformer.
2 A low junction capacitance TVS removes differential mode energy at the back end of the transformer, meantime the TVS is used in the protection of static electricity with fast reaction time
3 Front power supply transmission is through the inductor L1~L4, and TVS5 removes the residual voltage after the inductance.
4 This POE port program complies with 802.11 electrical standards.5 This POE port program to meet the IEC61000-4-5, GBT17626.5 and other surge test standards.
6 This POE port program to meet the IEC61000-4-2, GBT17626.2 and other static test standards.
7 Pass through 10/700us (resistance 40ohm) and 1.2/50-8/20us surge test.
>> Application:
1 POE power supply
2 POE separator
3 POE connector
4 AP
>> Protection circuit diagram
>>PulseTake Protection Device
GDT1/GDT2/GDT3/GDT4: S3RD5-470A 470V±20%，5KA, < 1pF, 1GΩ. TVS1/TVS2/TVS3/TVS4: TVS1/TVS2/TVS3/TVS4: PT3C031L SOD-323
TVS5: SMCJ58CA SMC/DO-214AB
MOV1/MOV2/MOV3/MOV4/MOV5： 14D820K