Title:
POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/075236
Kind Code:
A1
Abstract:
In the present invention, a first communication line (F1) transmits a control signal (S) from an interface circuit (34) to an n-th drive circuit (GDn) in sequence via a first drive circuit (GD1). A second communication line (F2) transmits a semiconductor switch state detection signal (DS) from the n-th drive circuit (GDn) to the interface circuit (34) in sequence via the first drive circuit (GD1). An i-th drive circuit (GDi) includes a driver for driving an i-th semiconductor switch (SWi) in response to the control signal (S), an abnormality detection circuit for detecting an abnormality of the i-th semiconductor switch (SWi), and first and second notification members (A1, A2). The abnormality detection circuit detects an abnormality of the i-th semiconductor switch (SWi) on the basis of the control signal (S) and an operating state of the i-th semiconductor switch (SWi) and notifies of the detection result by using the first notification member (A1). The abnormality detection circuit generates state detection signals indicating operating states of the i-th to the n-th semiconductor switches (SWi to SWn), detects mismatch between the control signal (S) and the operating states of the i-th to the n-th semiconductor switches (SWi to SWn) on the basis of the control signal (S) and the state detection signals, and notifies of the detection result by using the second notification member (A2).
Inventors:
ZHANG XIAOCHEN (JP)
Application Number:
PCT/JP2022/037404
Publication Date:
April 11, 2024
Filing Date:
October 06, 2022
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELECTRIC INDUSTRIAL SYSTEMS CORP (JP)
International Classes:
H02H7/00; H02H3/05; H02J9/06
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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