Voltage regulation method for attenuating inductance-induced on-

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage

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327538, 327589, 307110, G05F 110

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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.

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