Title :
The study and analysis of the conducted EMI suppression on power MOSFET using passive snubber circuits
Author :
Yaisom, C.U. ; Khanngern, W. ; Nitta, S.
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol., Bangkok, Thailand
Abstract :
This paper presents the study and analysis of RCD, RLD, and RCD-RLD passive snubber circuits affect on the power losses and suppression of the conducted EMI emission on the power MOSFET. The paper describes the snubber effects on dv/dt during the turn-off period, di/dt during the turn-on period, overvoltage, spike voltage, power loss and the conducted EMI emission. A 100 watt-50 kHz buck converter is used in the simulation and experiment. The measured and simulated results of conducted EMI emission are compared to verify the effectiveness of each snubber circuit.
Keywords :
DC-DC power convertors; electromagnetic interference; interference suppression; losses; overvoltage; passive networks; power MOSFET; snubbers; 100 W; 50 kHz; RCD snubber circuits; RCD-RLD snubber circuits; RLD snubber circuits; buck converter; conducted EMI emission; conducted EMI suppression; passive snubber circuits; power MOSFET; power losses; spike voltage; turn-off period; turn-on period; Buck converters; Circuit simulation; Electromagnetic interference; MOSFET circuits; Power MOSFET; Snubbers; Switched-mode power supply; Switches; Switching circuits; Voltage control;
Conference_Titel :
Electromagnetic Compatibility, 2002 3rd International Symposium on
Print_ISBN :
0-7803-7277-8
DOI :
10.1109/ELMAGC.2002.1177495
