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

fYear

2002

fDate

21-24 May 2002

Firstpage

561

Lastpage

564

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2002 3rd International Symposium on

Print_ISBN

0-7803-7277-8

Type

conf

DOI

10.1109/ELMAGC.2002.1177495

Filename

1177495