Resonanzwandlersteuerung

Details

Veröffentlichungs-Nr.

EP2546968

Aktenzeichen

EP11250660

Anmeldetag

15. Juli 2011

Veröffentlichung

18. Mai 2016

Erteilung

18. Mai 2016

Rechtsraum

EP

IPC

H02M3/337

Abstract

The disclosure relates to methods of controlling operation of a resonant power converter and to controllers configured to operate according to such methods. Exemplary methods disclosed include a method of controlling a resonant power converter (900) comprising primary and secondary side circuits, the primary side circuit having first and second series connected switches (905a, 905b) connected between a supply voltage line (906) and a ground line (907) and a resonance circuit comprising a capacitor (908b) and an inductor (Ls, Lm), the resonance circuit connected between a node connecting the first and second switches (905a, 905b) and the ground line (907), the method comprising the repeated sequential steps of: closing (2702) the first switch (905a) to start a conduction interval; sampling (2703) a voltage (Vcr) across the capacitor (908b) to obtain a sampled voltage level; and opening (2704, 2705) the first switch (905a) to end the conduction interval when a voltage (Vcr) across the capacitor crosses a voltage level determined by addition of the sampled voltage level with a predetermined voltage difference (deltaVcrh), wherein controlling the predetermined voltage difference (deltaVcrh) determines a power output of the resonant power converter (900).

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete