Stromversorgung mit Selbstdiagnose und Schutzschalter

Details

Veröffentlichungs-Nr.

EP3048712

Aktenzeichen

EP15187630

Anmeldetag

30. September 2015

Veröffentlichung

3. August 2016

Rechtsraum

EP

IPC

H02M3/158H02H7/12G01R31/40// H02M1/32

Abstract

A third switching element (S1) is connected between: a converter portion including first and second switching elements (Q1, Q2), an inductor (L1), and a capacitor (C1); and an external connection terminal to which a DC power supply is connected. In a first control state in which the third switching element is turned ON and the switching elements are turned ON and OFF, a voltage value at a connection point between the inductor and the third switching element is detected. If voltage value ‰¥ Vth1 is satisfied, a second control state is executed in which the third switching element is turned OFF and switching of the switching elements is controlled. If voltage value ‰¤ Vth2 is satisfied in the second control state, it is determined that abnormality of the DC power supply has occurred. If voltage value > Vth2 is satisfied, it is determined that abnormality of the converter portion has occurred.

Anmelder

Firma

Murata Manufacturing Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete