Electric power conversion systems – Current conversion – With starting arrangement
Reexamination Certificate
2011-03-01
2011-03-01
Vu, Bao Q (Department: 2838)
Electric power conversion systems
Current conversion
With starting arrangement
C363S050000, C323S901000
Reexamination Certificate
active
07898830
ABSTRACT:
An apparatus, such as a Buck converter system, for generating an output voltage while at the same time monitoring whether an overload or over current condition occurs at the output, and protecting the system if the overload or over current condition occurs. The apparatus includes a first circuit adapted to monotonically change a control voltage from a first voltage (e.g., approximately ground potential) towards a second voltage (e.g., a reference voltage VREF); a second circuit adapted to generate the output voltage based on the control voltage; a third circuit adapted to detect whether a magnitude of an output current exceeds a current threshold; and a fourth circuit adapted to change the control voltage from the second voltage towards the first voltage in response to the third circuit detecting that the magnitude of the output current exceeds the current threshold.
REFERENCES:
patent: 4504898 (1985-03-01), Pilukaitis et al.
patent: 5479086 (1995-12-01), Konstanzer
patent: 5751115 (1998-05-01), Jayaraman et al.
patent: 6693811 (2004-02-01), Bowman et al.
Casey Charles A.
Criscione Marcello
Nora Paolo
Piccitto Federico
Maxim Integrated Products Inc.
North Weber & Baugh LLP
Vu Bao Q
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