POWER SUPPLY DEVICE

摘要

The present invention relates to a power supply device including a primary and secondary areas insulated from each other, which comprises a power supply part converting power from the primary area and delivering to the secondary area; a control part located on the secondary area obtaining control information of the power supply part based on output voltage of the power supply part; and an Y capacitor providing an EMI noise path between the primary and secondary areas, and comprises a delivery part feeding the control information to the primary area.