PCB Heat Sink Experimenting @GadgetReboot
PCB Heat Sink Experimenting  @GadgetReboot
Uploaded November 2022 | Updated September 2026, 2 weeks ago
PCBWay Supports High Precision Advanced PCBs: pcbway.com
This experiment was inspired by pcb heat sink copper test data found in the AMS1117 LDO datasheet. It suggested that beyond a certain point, it may provide little further advantage to keep adding heat sink copper in a pcb layout.

I wanted to try a few layouts to see how it looked, including whether top and bottom copper layers were electrically connected or not.

AMS1117 Datasheet: advanced-monolithic.com/pdf/ds1117.pdf
LDO Thermal Considerations:
maxlinear.com/files/ApplicationNotes/LDOThermal.pdf
ww1.microchip.com/downloads/en/Appnotes/00761b.pdf

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PCB Heat Sink Experimenting

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