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Supply voltage optimisation for ADUM5402 isopower device lowest emissions

Question asked by Jem_E on Nov 24, 2016
Latest reply on Nov 29, 2016 by bkennedy

I am having trouble meeting the CISPR11 class B emission limits. Can you advise on the best primary side supply voltage for lowest emissions; AN-0971 is not clear on this point. The secondary voltage is 3.3V and the load is about 30mA. At the moment the primary supply voltage is also 3.3V. Thank you