Inductive compensation based control of synchronous rectification switch

An electronic device includes a synchronous rectification circuit having an actively controlled switching element through which resonant current flows during operation. The actively controlled switching element is disposed in a package which adds stray inductance to a main current path of the synchr...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Leong Kennith Kin, Krischan Klaus
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An electronic device includes a synchronous rectification circuit having an actively controlled switching element through which resonant current flows during operation. The actively controlled switching element is disposed in a package which adds stray inductance to a main current path of the synchronous rectification circuit. The electronic device also includes a fixed inductor magnetically coupled to the stray inductance or an additional inductance in series with the stray inductance so that the fixed inductor is not in the main current path of the synchronous rectification circuit and change in current through the inductance to which the fixed inductor is magnetically coupled induces a reference voltage at the fixed inductor which is in phase with a zero crossing point of the resonant current at different switching frequencies of the actively controlled switching element. A corresponding method of controlling the electronic device is also described.