Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2007-11-20
2007-11-20
Han, Jessica (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
C323S284000, C323S285000
Reexamination Certificate
active
11145269
ABSTRACT:
A step-up/step-down switching regulator control method for a regulator having an inductor with first and second leads, a first switch for controllably coupling the first lead to a source of power, a first device between the first lead and a circuit ground, a second switch for controllably coupling the second lead to the circuit ground, and a second device between the second lead and a regulator, the method comprising operating the switches in a sequence of phases when the source of power has a voltage exceeding the regulator output and in the same sequence of phases when the source of power has a voltage less than the regulator output, the phases being phase1with the first and second switches closed, phase2with the first switch closed and the second switch open, and phase3with both switches open. The first and second devices may be switches or diodes. Various embodiments are disclosed.
REFERENCES:
patent: 6087816 (2000-07-01), Volk
patent: 6166527 (2000-12-01), Dwelley et al.
patent: 6275016 (2001-08-01), Ivanov
patent: 6831448 (2004-12-01), Ishii et al.
patent: 2006/0055384 (2006-03-01), Jordan et al.
Amram Summit Jeffrey Lewis
Miwa Brett A.
Volk Karl Richard
Blakely , Sokoloff, Taylor & Zafman LLP
Han Jessica
Maxim Integrated Products Inc.
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