Changes between Version 9 and Version 10 of venice/thermal


Ignore:
Timestamp:
07/23/2025 10:43:08 PM (2 days ago)
Author:
Ryan Erbstoesser
Comment:

add notes for ambient

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  • venice/thermal

    v9 v10  
    22
    33= See also
    4 * [/wiki/ventana/thermal_management Ventana Thermal Page]
     4* [wiki:ventana/thermal_management General Thermal Page]
    55* [/wiki/newport/powerthermal Newport Thermal/Power Page]
    66* [/wiki/DVFS Dynamic Voltage and Frequency Scaling of the Processor]
    … …  
    99
    1010= Venice Thermal
     11
     12'''It is crucially important to read Gateworks Thermal explanation on the [wiki:ventana/thermal_management General Thermal Page]'''
     13
     14== Venice Thermal Ratings
     15
     16The Gateworks Venice SBCs are rated with parts that reach temperatures from -40 to +85C. Some parts are rated higher, but 85C is the minimum. Note, this is the part temperature, which is often hotter than the ambient air temperature. More explanation is available on the [wiki:ventana/thermal_management General Thermal Page]
     17
     18Gateworks pre-installs a heatsink on the CPU for all Venice boards. This heatsink provides basic cooling for the board during development but customers need to design their own thermal solution based on their particular enclosure, environment and operating conditions.
     19
     20The 1600MHz IMX8MM Industrial Temp SoC used for Venice is rated at:
     21 * Max: 105C Tj (Junction Temp)
     22 * Min: -40C Tj (Junction Temp)
     23
     24The thermal resistances for the packages assuming natural convection is:
     25 * RθJC (junction to case) = 4°C/W
     26 * RθJB (junction to board) = 7.8°C/W
     27 * RθJA (junction to ambient) varies per baseboard but is expected to be about 20°C/W
    1128
    1229== Venice Heatsinks
    … …  
    2037Some boards also have a 4-pin Fan controller connector suitable for driving a 5V fan via PWM with Tachometer feedback if active cooling is needed for the system. The fan is automatically controlled through the fan set points as defined [wiki:gsc#FanController here]
    2138
    22 === Venice Thermal Resistances
     39== Venice Thermal Resistances
    2340 - Thermal Pad between baseboard and SOM thermal resistance: 0.75 °C/W
    2441 - Paste (only used on i.MX8M Plus) thermal resistance:  0.12 °C/W
    2542 - i.MX8M Plus Heatsink on GW702x SOM is of the material AL6061 or AL6063.
    2643
    27 == Venice Thermal Ratings
    2844
    29 Gateworks pre-installs a heatsink on the CPU for all Venice boards. This heatsink provides basic cooling for the board during development but customers need to design their own thermal solution based on their particular enclosure, environment and operating conditions.
    30 
    31 The 1600MHz IMX8MM Industrial Temp SoC used for Venice is rated at:
    32  * Max: 105C Tj (Junction Temp)
    33  * Min: -40C Tj (Junction Temp)
    34 
    35 The thermal resistances for the packages assuming natural convection is:
    36  * RθJC (junction to case) = 4°C/W
    37  * RθJB (junction to board) = 7.8°C/W
    38  * RθJA (junction to ambient) varies per baseboard but is expected to be about 20°C/W
    3945
    4046