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Suppress of EMI in a Synchronous Buck Converter

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sers000

New Member
Hey,

I have been trying to minimize the noise in the circuit. I have applied a snubber consisting of a resistor and a capacitor after the switching components and the ringing effect as a result of switching has been greatly minimized. Now I am trying to minimize EMI levels to a value less than 25dBuV between 10MHz to 300MHz. What methods would you guys suggest?
Currently at the highest harmonic, its at 30 dBuV:
121030


121031
 

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  • Sync_1OPA_Feedback.asc
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  • T521X156M063ATE035.asc
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  • SER2918H-103KL.asy
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  • T521X156M063ATE035.asy
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