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lukaskn
Associate II
July 23, 2024
Solved

Vl53L5/VL53L7 temperature reading

  • July 23, 2024
  • 2 replies
  • 1234 views

Hi,

i am using both the VL53L5 and L7 in a quite limited space, where the sensor need to run in the 8x8 continuous mode. Therefore, the thermal design is quite challenging.  So, my question is: what temperature does the sensor specifically deliver with the parameter "silicon_temp_degc"? Can it be assumed to be its junction temperature? If not, can a delta between silicon temperature and junction temperature be estimated?

Best answer by TDK

It has to be junction temperature. The silicon area is small--it's all at about the same temperature. Reporting silicon temperature is easy and cheap. There would be no reason to put any sort of external sensor in there. It's not going to be perfectly accurate anyway.

2 replies

TDK
TDKAnswer
Super User
July 23, 2024

It has to be junction temperature. The silicon area is small--it's all at about the same temperature. Reporting silicon temperature is easy and cheap. There would be no reason to put any sort of external sensor in there. It's not going to be perfectly accurate anyway.

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    John E KVAM
    John E KVAM
    ST Employee
    July 23, 2024

    Here is an app not on thermal issues that should help.

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