Verfahren und Vorrichtung zur Synchronen Gleichrichtung sowie Vorrichtung und Gleichstromwandler

Details

Veröffentlichungs-Nr.

EP4723461

Anmeldetag

1. August 2023

Veröffentlichung

5. Dezember 2024

Rechtsraum

EP

IPC

H02M3/335

Abstract

A synchronous rectification driving method and apparatus, and a device and a direct-current converter. The method comprises: S201, when driving signals which are controlled to be inputted into synchronous rectification transistors in a synchronous rectification circuit all operate normally, acquiring measurement data which represents the total current flowing through synchronous rectification transistors in any switch unit; and S202, comparing the measurement data with a preset threshold, and if the measurement data is less than or equal to the preset threshold, controlling, for each switch unit, driving signals inputted into N synchronous rectification transistors in the switch unit to be continuously turned off, wherein N is a positive integer less than or equal to M. Compared with controlling, according to only Vds of synchronous rectification transistors, driving signals inputted into synchronous rectification transistors to be continuously turned off, controlling driving signals inputted into N synchronous rectification transistors in a switch unit to be continuously turned off after it is detected that measurement data is less than or equal to a preset threshold can reduce the probability of a MOSFET being controlled to be turned off in advance due to a small voltage Vds, thereby improving the reliability of a synchronous rectification circuit.

Anmelder

Firma

Vertiv Corporation

Land

🇺🇸 USA