C10G SOM – Thermal Analysis and Power Dissipation¶

This document outlines the power consumption and thermal performance of the C10G SOM under various heatsink and fan configurations. All tests were run using the devkit reference design available here:
Critical Link MitySOM-C10G Reference Project – pro_24.1_stable

• Processor Clock: 100 MHz
• Transceiver Reference Clock: 100 MHz
  • Transceiver Data Clock: 8GHz
• Temperature readings obtained using the tempvolt console command
• Ambient temperature held at 21 °C

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Thermal Results – With 12 Transceivers Enabled¶

Heatsink	Does Heatsink include a Fan?	External Fan	Ambient (°C)	Device (°C)	ΔT (°C)	Power (W)
None	No	Yes	21	48.34	27.34	6.96
FJ29@3.3V	Yes	No	21	45.63	24.63	6.96
FJ29@5V	Yes	No	21	44.28	23.28	6.96
ATS-52290G-C1-R0	No	No	21	82.85	61.85	8.64
ATS-52290G-C1-R0	No	Yes	21	38.19	17.19	6.72

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Thermal Results – With 6 Transceivers Enabled¶

Heatsink	Does Heatsink include a Fan?	External Fan	Ambient (°C)	Device (°C)	ΔT (°C)	Power (W)
None	No	Yes	21	44.28	23.28	5.76
FJ29@3.3V	Yes	No	21	43.6	22.6	5.88
FJ29@5V	Yes	No	21	42.92	21.92	5.88
ATS-52290G-C1-R0	No	No	21	74.73	53.73	6.84
ATS-52290G-C1-R0	No	Yes	21	36.16	15.16	5.64

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Thermal Results – With Transceivers Removed from FPGA Design¶

Heatsink	Does Heatsink include a Fan?	External Fan	Ambient (°C)	Device (°C)	ΔT (°C)	Power (W)
None	No	Yes	21	38.86	17.86	3.84
FJ29@3.3V	Yes	No	21	38.19	17.19	3.96
FJ29@5V	Yes	No	21	38.19	17.19	3.96
ATS-52290G-C1-R0	No	No	21	59.17	38.17	4.32
ATS-52290G-C1-R0	No	Yes	21	33.45	12.45	3.84

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Notes¶

• ATS-61290W-C1-R0: The MAXIGRIP clip does not attach properly to the SoC due to clearance issues. The fan was attached directly using thermal tape.
• External fans used were Sanyo Denki 9G1224G101.
• Temperature rise is calculated as ΔT = Device Temp − Ambient Temp.
• The FJ29 fansink is the recommended solution as it clips tightly onto the SOC on the SOM

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Test Setup¶

Fan placement and setup during testing: