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WO1996007960B1 - Commande de convertisseur de puissance comportant une combinaison pfc-pwm autonome montee en cascade, avec une commutation synchronisee - Google Patents

Commande de convertisseur de puissance comportant une combinaison pfc-pwm autonome montee en cascade, avec une commutation synchronisee

Info

Publication number
WO1996007960B1
WO1996007960B1 PCT/US1995/011021 US9511021W WO9607960B1 WO 1996007960 B1 WO1996007960 B1 WO 1996007960B1 US 9511021 W US9511021 W US 9511021W WO 9607960 B1 WO9607960 B1 WO 9607960B1
Authority
WO
WIPO (PCT)
Prior art keywords
stage
switch
converter
coupled
synchronous switching
Prior art date
Application number
PCT/US1995/011021
Other languages
English (en)
Other versions
WO1996007960A1 (fr
Filing date
Publication date
Priority claimed from US08/300,475 external-priority patent/US5565761A/en
Application filed filed Critical
Publication of WO1996007960A1 publication Critical patent/WO1996007960A1/fr
Publication of WO1996007960B1 publication Critical patent/WO1996007960B1/fr

Links

Abstract

Un convertisseur de puissance en cascade à commutation synchronisée comprend un premier étage convertisseur de correction du facteur de puissance et un second étage convertisseur continu-continu pour générer une tension de sortie en réponse à une tension et un courant d'entrée. La tension de sortie (Vout) est commandée par un circuit qui mesure un niveau de courant dans le circuit, compare ce niveau à un niveau souhaité prédéterminé et développe une réponse ailleurs dans le circuit. La modulation du bord d'attaque du premier étage et la modulation du bord arrière du second étage s'effectuent pour assurer une commutation synchronisée entre les deux étages de puissance. On utilise un seul signal d'horloge de référence (CLK) pour commander simultanément les deux étages de puissance. On modifie le cycle de fonctionnement du premier étage en fonction de la tension d'entrée (Vin). Le cycle de fonctionnement du second étage est tenu d'une manière idéale à 50 %, mais va varier quand la tension d'entrée de cet étage varie. Un comparateur (128) est couplé au premier étage pour comparer une tension de sortie (Vout) à une valeur de seuil et empêcher le second étage de se mettre en route si la tension de sortie du premier étage est en dessous de la valeur de seuil.
PCT/US1995/011021 1994-09-02 1995-08-24 Commande de convertisseur de puissance comportant une combinaison pfc-pwm autonome montee en cascade, avec une commutation synchronisee WO1996007960A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/300,475 US5565761A (en) 1994-09-02 1994-09-02 Synchronous switching cascade connected offline PFC-PWM combination power converter controller
US08/300,475 1994-09-02

Publications (2)

Publication Number Publication Date
WO1996007960A1 WO1996007960A1 (fr) 1996-03-14
WO1996007960B1 true WO1996007960B1 (fr) 1996-05-17

Family

ID=23159248

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/011021 WO1996007960A1 (fr) 1994-09-02 1995-08-24 Commande de convertisseur de puissance comportant une combinaison pfc-pwm autonome montee en cascade, avec une commutation synchronisee

Country Status (2)

Country Link
US (1) US5565761A (fr)
WO (1) WO1996007960A1 (fr)

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