Gleichspannungswandlerschaltung

Details

Veröffentlichungs-Nr.

EP3869676

Aktenzeichen

EP20158327

Anmeldetag

19. Februar 2020

Veröffentlichung

7. Januar 2026

Erteilung

7. Januar 2026

Rechtsraum

EP

IPC

H02M1/32H02M3/158H02M1/00H02H7/122H02M1/44H02M7/48H02H3/07H02H7/12

Abstract

A direct current/direct current DC/DC converter circuit (1) for converting an input voltage, Vin, into an output voltage, Vout, said DC/DC converter circuit (1) comprising: a pulse width modulation PWM controller (4) adapted to provide a PWM set signal applied to a gate of a semiconductor switch (3) of said DC/DC converter circuit (1) for controlling a ratio between the output voltage, Vout, and the input voltage, Vin, and an overcurrent detector (5) adapted to detect an overcurrent flowing through a component of the DC/DC converter circuit (1) and to signal the detected overcurrent event, oce, to the PWM controller (4) which switches the semiconductor switch (3) into a protection state in response to the signaled overcurrent event, oce, to provide overcurrent protection for the DC/DC converter circuit (1),wherein after the overcurrent detector (5) stops to signal the overcurrent event, oce, to the PWM controller (4), the semiconductor switch (3) is retained by the PWM controller (4) in the protection state until a next signal edge of the PWM set signal occurs or until a predefined waiting period has expired in a waiting state of the PWM controller (4).

Anmelder

Firma

Fronius International GmbH

Land

🇦🇹 Österreich

Fachgebiete