A
Can heat sinks cause EMI issues?
Yes.
The heat sink might be connected to "ground" and emit very little. OR It might be connected to a power transistor (MOSFET) that is switching very fast. In the last case the heat sink adds a antenna to the source of noise.
The heat sink might be connected to "ground" and emit very little. OR It might be connected to a power transistor (MOSFET) that is switching very fast. In the last case the heat sink adds a antenna to the source of noise.
Yes, heat sinks can cause EMI issue. In order to reduce radiation the heatsink can be grounded at the cost of increased common mode currents to the power supply, escalating conducted EMI.
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