Naslov
Conducted Emissions for Different Conversion Ratios of GaN-Based Synchronous Buck Converter

Autori
Bačmaga, Josip ; Blečić, Raul ; Barić, Adrijan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Skup
Joint International Symposium on Electromagnetic Compatibility and Asia-Pacific International Symposium on Electromagnetic Compatibility

Mjesto i datum
Sapporo, Japan, 03.06.2019. - 07.06.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
conducted EMI ; duty ratio ; gallium-nitride FET ; power efficiency ; switching DC-DC converter

Sažetak
Large voltage conversion ratios of the switching DC-DC converters are difficult to achieve at high switching frequencies due to the short pulses of the control signals for the FET switches. To overcome this, multiple stages of the DC-DC converters with smaller conversion ratios can be used. A synchronous buck converter based on the gallium-nitride FET switches is designed to analyze the impact of the different voltage conversion ratios on the power efficiency and differential-mode conducted EMI at the input of the converter. The conducted EMI and power efficiency are measured for duty ratios of 10% to 50% and for switching frequencies up to 5 MHz. The input and output voltage and power levels are set to reproduce the operating conditions of the front-end and load converter in the multi-stage step-down switching DC-DC converter topology

Izvorni jezik
Engleski

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