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Version: 5.0

Colibri VFxx Power Consumption

Overview

This is one of a series of posts about Toradex modules' power consumption measurements. This article provides information about the power consumption of Colibri VF61 and Colibri VF50 modules used in different operating conditions.

Colibri VFxx's power consumption depends on the devices connected to it. Below are the power consumption results of several test cases, demonstrating realistic system configurations at various CPU loads for the Colibri VFxx module and Viola carrier board.

Disclaimer

Toradex tests its modules following internal protocols as a way of standardizing the results. The overall power consumption of each module depends on multiple factors, such as:

  • Environmental temperature
  • Particular Silicon Revision of the SoC
  • Versions of the Software Components installed on the module
  • Use cases

The following results were achieved by simulating an ideal scenario. Applications in different conditions may not achieve the exact same results. It is suggested that a customer measures its SoM's power consumption under its own particular use cases before designing hardware based on this data.

Testing Conditions

  • The tests were performed using 3 different modules of each model.
  • The provided data is the average of the results obtained for each module group.
  • All of the SoMs were heated up first (using a stress test) to simulate the conditions of a continuous use scenario.

00101201 Colibri VF50 128MB V1.2B

Software version: To be determined

Results

Test Casemain(A)P(W)
Idle0.844
Idle 20 minutes0.853
1 Core0.922
Headless (CPU Idle)0.780
Headless (CPU full) Average 30s0.837
Headless (CPU full) Maximum reading 30s0.843
Floating Point/Neon0.911
Full stress test Average 30s0.952
Full stress test Maximum 30s1.005
Suspend Current0.129
internal RTC in use after power off11 µA
internal RTC in use after power cut11 µA

00131201 Colibri VF50 128MB IT V1.2B

Software version: To be determined

Results

Test Casemain(A)voltage(V)P(W)
Idle0.2043.3060.674
Idle 20 minutes0.2033.3060.671
1 Core Stress0.2233.3060.737
2 Cores Stressn/an/an/a
3 Cores Stressn/an/an/a
4 Cores Stressn/an/an/a
Headless (CPU Idle)0.1683.3070.555
Headless (CPU full) Average 30s0.2023.3060.667
Headless (CPU full) Maximum reading 30s0.2053.3060.677
Ethernet Stress0.1843.3060.608
Floating Point/Neon0.2353.3060.776
Full stress test Average 30s0.2233.3060.737
Full stress test Maximum 30s0.2243.3060.740
Suspend Current0.0913.3070.300
Internal RTC in use after power off10 µA
internal RTC in use after power cut6.6 µA

00121201 Colibri VF61 265MB IT V1.2B

Software version: To be determined

Results

Test Casemain(A)voltage(V)P(W)
Idle0.2333.2940.767
1 Core Stress0.2713.2920.892
Headless (CPU Idle)0.2023.2960.665
Headless (CPU full)0.2383.2940.785
Ethernet Idle Fast (CPU full)0.2713.2920.892
Ethernet Vollast Fast (CPU full)0.2803.2910.921
Floating Point/Neon0.2693.2920.886
CPU full M4 idle0.2783.2920.915
CPU full M4 stress0.2783.2920.915
Suspend Current0.0513.3080.168
Internal RTC in use after poweroff9.2uA
Internal RTC in use after power cut9.2uA

Additional Resources

Colibri VF50 Page and Datasheet: Colibri VF50

Colibri VF61 Page and Datasheet: Colibri VF61

Specifications and Design Guides: Carrier Board Design Guides

Thermal Management in Toradex Modules: Thermal Management

How to Suspend Your Module Running Linux: Suspend/Resume (Linux)

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