Adaptive digital voltage regulator with Bresenham sequence...

Details Adaptive digital voltage regulator with Bresenham sequence... Adaptive digital voltage regulator with Bresenham sequence...

2007-05-01

2007-05-01

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S285000

Reexamination Certificate

active

11480608

ABSTRACT:
A digitally-controlled, DC/DC converter includes a switched-mode power stage for the purpose of converting an input voltage (Vin) into an output voltage (Vout); the power stage including a controllable switching device, which is turned ON and OFF by a control device with temporal resolution Δt. The converter further includes a duty cycle control mechanism for controlling the duty cycle of the controllable switching device; the duty cycle control mechanism including a mechanism for estimating the output voltage error, and a selector mechanism for determining the turn OFF and turn ON times of the controllable switching device by choosing, cycle by cycle, an ON time/OFF time pair from a working set of two quantized ON time/OFF time pairs, choosing in such a manner that the amplitude of the output voltage error is continually minimized. At each switching cycle, the current output voltage error estimate is generated, and an ON time/OFF time pair is chosen. Where the output voltage error estimate is small, the choice is determined via a Bresenham sequence generator.

REFERENCES:
patent: 5594324 (1997-01-01), Canter et al.
patent: 6841979 (2005-01-01), Berson et al.
patent: RE38780 (2005-08-01), Hawkes et al.
patent: 6992469 (2006-01-01), King

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