W5500 Chip Freezing Test

The W5500 chip was tested in a typical freezer, checking for normal operation in an environment where it dropped below minus 20 degrees Celsius.
ORIGINAL POST
By Louis
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Hardware Components
W5500
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The W5500 chip was tested in a typical freezer, checking for normal operation in an environment where it dropped below minus 20 degrees Celsius.

 

The normal operating category of the chip listed on the WIZnet website is minus 40 to +85.

  • Check chip operation at temperatures falling below -20℃. 
  • Review normal operation during W5500 Wake-up in freezing state for a long time. 
  • Measure the speed drop after aging at -20℃ for a long time. 

 

Purpose 

  1. Check that there is no speed deviation when the W5500 chip is operated at room temperature and when it is operated at a low temperature below -20.
  2. When the W5500 is wake-up in the freezer for a long time, examine its normal operation.
  3. Measure the operation and speed drop when aging at a temperature below -20 degrees for a long time.

 

Conducting the test at normal room temperature between 15 and 25 degrees Celsius.

Chip Surface Temperature : 42.9℃ 

W5500 TCP Recv : 0.042Mbps (42Kbps) 

 

Test carried out below minus 20 degrees.

(Left) – Freezer Inside Temperature : -20.2℃ 

(Right) – Chip Surface Temperature : -8.4℃ 

W5500 TCP Recv 0.042Mbps (42Kbps) 

 

Operation When Wake-Up W5500 in freezer for a long time.

 

(Left) – Freezing Chip Surface Temperature in Operation : -6.2℃ 

(Right) – Freezing Chip Surface Temperature without Movement 19.4℃ 

W5500 TCP Recv : 0.046Mbps (46Kbps) 

 

Operation and speed degradation when aging at a temperature below -20 degrees for a long time

1st Test (1 hour Later)

(Left) – Freezer Inside Temperature : -23.1℃ 

(Right) – Chip Surface Temperature : -7.0℃ 

W5500 TCP Recv 0.042Mbps (42Kbps) 

 

2nd Test (3 hour Later)

 

(Left) – Freezer Inside Temperature : -20.2℃ 

(Right) – Chip Surface Temperature : -8.4℃ 

W5500 TCP Recv 0.042Mbps (42Kbps) 

 

3rd Test (5 hour Later)

(Left) – Freezer Inside Temperature : -26.4℃ 

(Right) – Chip Surface Temperature : -10.9℃ 

W5500 TCP Recv 0.042Mbps (42Kbps) 

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