Title:
POWER SUPPLY HAVING A PLURALITY OF POWER OUTPUTS
Document Type and Number:
Japanese Patent JP3898090
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a system power supply IC having a plurality of outputs and a function of monitoring abnormality and protection for dealing with any kind of abnormality of all the kinds of power supply and carry out system-off protection, while investigation of the cause of the abnormality and a reproducing test can be carried out easily after the protection.
SOLUTION: When an abnormal condition is generated at any point of a plurality of power circuits, the abnormality detection signal along with time data is stored in a non-volatile memory with distinction of power circuits and abnormal conditions, and the operation of all the power circuits are stopped. By this stop operation, the system power supply IC and the load are protected, and the investigation of the cause of the abnormality and the reproducing test can be carried out easily by using the power supply, the abnormal condition and the time data stored in the non-volatile memory.
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Inventors:
Kenji Otani
Kiyotaka Umemoto
Kiyotaka Umemoto
Application Number:
JP2002155974A
Publication Date:
March 28, 2007
Filing Date:
May 29, 2002
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
G05F1/00; H02M3/00; H02H1/00; H02J1/08; H02M3/157; (IPC1-7): H02M3/00; G05F1/00
Domestic Patent References:
| JP2001275344A | ||||
| JP2000265895A | ||||
| JP11014122A |
Attorney, Agent or Firm:
Makoto Monda
Terumi Hemi
Terumi Hemi