Frequenzmodulationssteuerung für Vollbrückenumrichter mit Phasenverschiebung

Details

Veröffentlichungs-Nr.

EP3713067

Aktenzeichen

EP20161510

Anmeldetag

6. März 2020

Veröffentlichung

15. Januar 2025

Erteilung

15. Januar 2025

Rechtsraum

EP

IPC

H02M7/04H02M3/335

Abstract

A phase shift full bridge (PSFB) converter includes: an isolation transformer (110); a full-bridge (112) having a first pair of switch devices (QA, QB) connected in series at a first node (A) coupled to a first terminal of the primary side of the isolation transformer (110), and a second pair of switch devices (QC, QD) connected in series at a second node (B) coupled to a second terminal of the primary side of the isolation transformer (110); a rectifier (114) coupled to the secondary side of the isolation transformer; and a controller (116) for switching the first and second pairs of switch devices out of phase with each other. Under nominal input voltage conditions for the PSFB, the controller switches the first and second pairs of switch devices at a nominal switching frequency. Under reduced input voltage conditions for the PSFB, the controller switches the first and second pairs of switch devices at a frequency lower than the nominal switching frequency.

Anmelder

Firma

Infineon Technologies Austria AG

Land

🇦🇹 Österreich

Fachgebiete