Electricity: power supply or regulation systems – Output level responsive – Using a transformer or inductor as the final control device
Reexamination Certificate
2008-06-06
2011-12-27
Berhane, Adolf (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a transformer or inductor as the final control device
Reexamination Certificate
active
08085011
ABSTRACT:
A boost regulator for converting an input voltage to a higher output voltage including an inductor, an error circuit, a switching circuit, a ripple circuit, and a hysteretic comparator circuit. The inductor has a first end coupled to the input voltage and a second end. The error circuit determines an error of the output voltage and provides an error voltage indicative thereof. The switching circuit switches the second end of the inductor between the output voltage and ground as controlled by a pulse width modulation signal. The ripple circuit synthetically replicates ripple current through the inductor based on voltage applied across the inductor and provides a ripple voltage indicative thereof. The hysteretic comparator circuit develops the pulse width modulation signal based on comparing the ripple voltage within a hysteretic window voltage range based on the error voltage.
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Berhane Adolf
Intersil America's Inc.
Stanford Gary R.
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