Totzeitreduktion unter Verwendung eines Gate-Stromspiegels in einem Stromwandler

Details

Veröffentlichungs-Nr.

EP4369603

Aktenzeichen

EP22315275

Anmeldetag

10. November 2022

Veröffentlichung

26. November 2025

Erteilung

26. November 2025

Rechtsraum

EP

IPC

H03K17/0412H02M1/38H02M1/00H03K17/691

Abstract

Gate driver circuit, for a half bridge of a converter (100) where a first switching device (S<H>), having a first gate, and a second switching device (S<L>), having a second gate, are controlled independently and in a complementary way respectively through a first gate driver buffer (1a) and a second gate driver buffer (1b), and a controller (60) providing gate pull up and gate pull down pulse signals to the first and second gate drivers buffers, comprising a first gate current mirroring circuit (2a) on a sink branch of said first gate driver buffer (1a) and a second gate current mirroring circuit (2b) on a sink branch of said second gate driver buffer (1b) to provide, in advance from said pulse signals (GP1, .GP2) issued from the controller (60), a first early gate pullup command signal (EC1) issuing from the first gate current mirroring circuit (2a), for the second gate driver buffer (1b) under a turning off of said first switching device (S<H>) and a second early gate pullup command signal (EC2) issuing from the second gate current mirroring circuit (2b), for the first gate driver buffer (1a) from a turning off of said second switching device (S<L>), in advance from gate pull up pulse signals (GP1, GP2) issued from the controller (60).

Anmelder

Firmen

MITSUBISHI ELECTRIC R&D CENTRE EUROPE BV
MITSUBISHI ELECTRIC CORPORATION
Mitsubishi Electric R&D Centre Europe B.V.

Land

🇳🇱 Niederlande

Fachgebiete