EMC design of PD power supply2025-06-23

With the development of technology and the advancement of semiconductor materials, PD power supplies are moving towards miniaturization, high frequency, and high power. EMC design is becoming increasingly challenging. EMC encompasses EMI and EMS, and EMI includes RE, CE, Harmonic, and Flicker. EMS includes ESD, EFT, Surge, RS, CS, DIP, and PFM. Due to the high uncertainty and numerous variables of RE and CE, it is more difficult and takes longer. This article mainly introduces some practical debugging methods for RE and CE.

The influence of RC values in the absorption circuit on VDS and VCS2025-06-17

Classification and selection of X and Y capacitors2025-06-12

IEC62368 and IEC60601 temperature rise test shell temperature limit differences2023-03-31

The difference between the temperature rise test of IEC62368-1 and IEC60601-1 is mainly reflected in the temperature rise limit of the accessible parts (outer surface of the housing)