Schaltnetzteil, Stromversorgungssystem und Bilderzeugungsvorrichtung

Details

Veröffentlichungs-Nr.

EP2750273

Aktenzeichen

EP13186173

Anmeldetag

26. September 2013

Veröffentlichung

20. November 2019

Erteilung

20. November 2019

Rechtsraum

EP

IPC

H02M1/36H02M3/335G03G15/00// H02M1/00

Abstract

A switching power source (20) includes: a transformer (23); a semiconductor switching element (25) that is provided at a primary side of the transformer (23); a rectifying-and-smoothing circuit (27) that is provided at a secondary side of the transformer (23); a switching controller (50) configured to perform a switching control to turn on-and-off the semiconductor switching element (25), wherein the switching controller (50) comprises: a stoppage circuit (67) configured to perform a stoppage process to stop the switching control when a first-level control signal is input, a restart circuit (65) configured to restart the switching control when a second-level control signal different in its level from the first-level control signal, and a limiting circuit (71) configured to limit, at the time of a start-up of the switching power source, a performance of the stoppage process performed by the stoppage circuit (67) until an output voltage of the switching power source (20) increases to a target voltage.

Anmelder

Firma

Brother Kogyo Kabushiki Kaisha

Land

🇯🇵 Japan

Fachgebiete