Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1997-06-27
2000-05-30
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327538, 327589, 307110, G05F 110
Patent
active
060695218
ABSTRACT:
An active digital voltage regulator circuit stores energy during times when the local power supply voltage is greater than a predefined voltage, e.g., during times when the parasitic inductances supplement the local power supply voltage. The active digital voltage regulator circuit uses the stored energy to supplement the local power supply voltage during times when the local power supply voltage starts to collapse, e.g., during periods when inductive losses are preventing the power supply from maintaining the local power supply voltage. A control circuit within the regulator circuit is a combination of two self-biasing and off-set nulling power supply monitor circuits. Each power supply monitor circuit further includes a differencing, non-overlapped, dual-output amplifier connected to the first and second power supply input lines. The differencing, non-overlapped, dual-output amplifier includes a predriver stage and an output stage, both of which are connected to the first and second power supply input lines. The structures and methods are useful on a power supply board to attenuate periodic ripple voltages produced by a DC-DC converter. In general, the structures and methods are applicable in any application with a period ripple voltage.
REFERENCES:
patent: 5444310 (1995-08-01), Kataoka et al.
patent: 5608614 (1997-03-01), Ohnishi et al.
patent: 5734205 (1998-03-01), Okamura et al.
patent: 5761058 (1998-06-01), Kanda et al.
Ang Michael Anthony
Taylor Alexander Dougald
Gunnison Forrest
Kim Jung Ho
Sun Microsystems
Wells Kenneth B.
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