Changes between Version 2 and Version 3 of venice/power


Ignore:
Timestamp:
05/27/2021 10:22:15 PM (19 months ago)
Author:
Cale Collins
Comment:

removed thermal related info, moved to venice/thermal. Created link

Legend:

Unmodified
Added
Removed
Modified
  • venice/power

    v2 v3  
    33= Venice Thermal
    44
    5  * Please also see [wiki:ventana/thermal_management Very Resourceful Thermal Management Page]
    6 
    7 == Venice Thermal Ratings
    8 
    9 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.
    10 
    11 The 1600MHz IMX8MM Industrial Temp SoC used for Venice is rated at:
    12  * Max: 105C Tj (Junction Temp)
    13  * Min: -40C Tj (Junction Temp)
    14 
    15 The thermal resistances for the packages assuming natural convection is:
    16  * RθJC (junction to case) = 4°C/W
    17  * RθJB (junction to board) = 7.8°C/W
    18  * RθJA (junction to ambient) varies per baseboard but is expected to be about 20°C/W
     5 * See [wiki:venice/thermal ]
    196
    207
    21 == Venice Temperature Readings
    22 Venice has the ability to measure the board temperature and CPU temperature.
    23 
    24 Both values are important, but the CPU will be the hottest component and thus should be watched closely.
    25 
    26 === CPU Temperature
    27 The IMX8MM internal CPU junction temperature can be read via Linux:
    28 {{{#!bash
    29 cat /sys/class/thermal/thermal_zone0/temp
    30 }}}
    31 
    32 The value show is C*1000 and the position of the thermal sensor varies per baseboard but is typically near the power supply.
    33 
    34 === Board Temperature
    35 The board temperature can be measured through the GSC:
    36 {{{#!bash
    37 cat /sys/class/hwmon/hwmon0/temp1_input
    38 }}}
    39 
    40 The value show is degress C*1000 and the position of the thermal sensor varies per baseboard but is typically near the power supply.
    41 
    42 
    43 == Venice Power Dissipation
     8= Venice Power Dissipation
    449
    4510The following table provides typical power consumption (Watts) for the various Venice board models without any attached peripherals.
     
    6025
    6126
    62 == Venice Heatsinks
    63 
    64 The Venice System On Module (SoM) has a 20x20x10mm (LxWxH) aluminum heatsink for passive thermal dissipation.
    65 
    66 Some 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]
    67 
    68