Papers Submitted to WSEAS Conferences and WSEAS Journals: Wseas Transactions

Monday, 28 June 2010

Wseas Transactions

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The following information was submitted:

Transactions: WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS
Transactions ID Number: 88-131
Full Name: Florian Ion
Position: Lecturer
Age: ON
Sex: Male
Address: B-dul Unirii, No. 18-24, 130082, Targoviste
Country: ROMANIA
Tel: 0040-724-356.001
Tel prefix:
Fax:
E-mail address: flion@valahia.ro
Other E-mails: ionflorian@yahoo.com
Title of the Paper: The Effect of the Output Capacitor on the Power Spectrum of the EMI Radiation, the Output Voltage Ripple and the Efficiency of a SEPIC Converter
Authors as they appear in the Paper: Florian Ion, Marcel Ionel, Gabriel Predusca
Email addresses of all the authors: flion@valahia.ro, ionel.marcell@yahoo.com, gpredusca@valahia.ro
Number of paper pages: 10
Abstract: This paper presents the effect of the output capacitor on the EMI spectrum of radiation, the output voltage ripple and the efficiency of a SEPIC Converter. Two SEPIC converters were designed with LT1871 (Linear Technology) and LM2577 (National Semiconductor), for an input voltage of 4 to 16V, the output voltage of 5V, output current of 0.5A, and the switching frequency of 52kHz. The functionality of the converter was simulated in LTspice IV and OrCAD, and it was compared with the experimental results. It was measured the level of EMI spectrum, the output voltage ripple and the efficiency of the converter with different types of capacitors. An acceptable output voltage ripple, which respects the standards FCC Class A and Class B, was obtained with solid and tantalum capacitors in parallel with small MLCC capacitors. The minimum of ripple and frequency spectrum was obtained by adding a LC Filter to the output of the converter. With this filter the converter respects !
the standard SAE J1113.
Keywords: SMPS, SEPIC converter, output voltage ripple, converter's efficiency, frequency spectrum
EXTENSION of the file: .doc
Special (Invited) Session: The Effect of the Output Capacitor on the Power Spectrum of the EMI Radiation of a SEPIC Converter
Organizer of the Session: 645-178
How Did you learn about congress:
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