Power supply unit having multiple power supply outputs

Details Power supply unit having multiple power supply outputs Power supply unit having multiple power supply outputs

2006-05-16

2006-05-16

Feild, Lynn (Department: 2835)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Diverse or unlike electrical characteristics

C307S043000, C307S086000, C361S030000, C361S093800

Reexamination Certificate

active

07045915

ABSTRACT:
A power supply unit (system power supply IC) has a multiplicity of power supply circuits providing for different supply voltages. Should an abnormal condition take place in any of the multiple power supply circuits, the power supply circuit suffering the abnormality issues an abnormality detection signal that contains a power supply circuit number and an abnormality type, which signal is stored in a nonvolatile memory together with time data indicative of the time of reception of the abnormality detection signal before all the power supply circuits are disabled. Thus, this arrangement protects the system power supply IC and the loads connected thereto, and provides convenient means for analyzing the abnormality and replicating it if necessary, based on the abnormal power supply circuit number, abnormality type and time data stored in the nonvolatile memory.

REFERENCES:
patent: 4292543 (1981-09-01), Reed, Sr.
patent: 5994790 (1999-11-01), Nagashima et al.
patent: 6121693 (2000-09-01), Rock
patent: 6366061 (2002-04-01), Carley et al.
patent: 6373671 (2002-04-01), Watanabe et al.
patent: 6598170 (2003-07-01), Nagashima
patent: 6769521 (2004-08-01), Saito et al.

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