Electrical circuit for voltage transformation and use of the...

Details Electrical circuit for voltage transformation and use of the... Electrical circuit for voltage transformation and use of the...

H - Electricity

02

M

H02M 1/42 (2007.01) H02M 7/06 (2006.01)

Patent

CA 2499617

The invention relates to an electrical circuit for voltage transformation, said electrical circuit being suitable for power factor correction. The invention enables a good power factor correction to be achieved with a high efficiency of between 80 % and 95 % in the MHz frequency region. To this end, few components suitable for high frequencies (capacitors, inductances, diodes and high frequency switches) are used. Said diodes are, for example, Schottky diodes with SiC as the diode material. The high frequency switch comprises a powerful MOS transistor.

La présente invention concerne un circuit électrique convertisseur de tension. Le circuit électrique permet la correction du facteur de puissance. L'invention permet d'obtenir une bonne correction du facteur de puissance avec un rendement élevé de 80 % à 95 % dans la plage des fréquences de l'ordre du MHz. A cet effet sont utilisés quelques composants qui supportent les hautes fréquences (condensateurs, inductances, diodes et commutateurs haute fréquence). Les diodes utilisées sont par exemple des diodes Schottky en matériau SiC. Le commutateur haute fréquence présente un transistor MOS puissant.

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