Abwärtswandlerschaltung mit Fliegendem Kondensator

Details

Veröffentlichungs-Nr.

EP4761081

Anmeldetag

16. Dezember 2024

Veröffentlichung

17. Juni 2026

Rechtsraum

EP

Abstract

A buck converter circuit according to the disclosure includes a pre-charging switch (10), a switching element Q1 (11), a switching element Q2 (12), a switching element Q3 (13), a switching element Q4 (14), a flying capacitor (20), a voltage supply node (40), a first flying capacitor node (41), a second flying capacitor node (41), a switch node (43) and a control system (50). The voltage supply node (40), the pre-charging switch (10) and the first flying capacitor node (41) are sequentially connected in series. The voltage supply node (40), the switching element Q1 (11) and the first flying capacitor node (41) are sequentially connected in series. The first flying capacitor node (41), the flying capacitor (20), the second flying capacitor node (41) and the switching element Q4 (14) are sequentially connected in series. The first flying capacitor node (41), the switching element Q2 (12), the switch node (43), the switching element Q3 (13) and the second flying capacitor node (41) are sequentially connected in series. The control system (50) is configured for executing a pre-charging process (100) and a cyclic converting process (200). During the pre-charging process (100), the control system (50) controls the pre-charging switch (10) and the switching element Q4 (14) to be conductive to build up a voltage difference in the flying capacitor (20). During the cyclic converting process (200) the control system (50) controls the pre-charging switch (10) to be isolating when the switching element Q1 is isolating.

Anmelder

Firma

ABB E-mobility B.V.

Land

🇳🇱 Niederlande