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Multiphase voltage regulator having coupled inductors with reduced winding resistance
(United States Patent and Trademark Office, 2010-01-19)
A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. The inductors are inversely coupled. In a first embodiment, the converter includes a toroidal magnetic core with ...
Adaptive on-time control for power factor correction stage light load efficiency
(United States Patent and Trademark Office, 2014-08-12)
Light load efficiency of a power factor correction circuit is improved by adaptive on-time control and providing for selection between a continuous conduction mode and a discontinuous conduction mode wherein the discontinuous ...
Self-driven circuit for synchronous rectifier DC/DC converter
(United States Patent and Trademark Office, 2006-03-21)
A power converter having a primary circuit (e.g. full bridge) and a secondary circuit (e.g. current doubler) has switches in the secondary circuit that are controlled by a drive circuit. The drive circuit is connected to ...
Two-stage voltage regulators with adjustable intermediate bus voltage, adjustable switching frequency, and adjustable number of active phases
(United States Patent and Trademark Office, 2006-07-04)
A two-stage power converter that dynamically adjusts to output current requirements includes a first stage regulator that provides power to a second stage regulator. The first stage can be a buck converter, and the second ...
Hybrid control methods for digital pulse width modulator (DPWM)
(United States Patent and Trademark Office, 2009-08-04)
A digital pulse width modulator leverages clock frequency to achieve very fine duty cycle resolution by using a constant number of time slots for each state of a pulse signal and varying the number of time slots in a ...
Quasi-parallel voltage regulator
(United States Patent and Trademark Office, 2011-01-18)
Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected ...
Hybrid filter for high slew rate output current application
(United States Patent and Trademark Office, 2009-07-14)
An active linear regulator circuit in parallel with a filter capacitor of a switching voltage regulator injects current to a load only when the switching regulator and capacitor cannot supply adequate current to follow ...
Hybrid filter for high slew rate output current application
(United States Patent and Trademark Office, 2009-09-01)
An active linear regulator circuit in parallel with a filter capacitor of a switching voltage regulator injects current to a load only when the switching regulator and capacitor cannot supply adequate current to follow ...
Multiphase voltage regulator having coupled inductors with reduced winding resistance
(United States Patent and Trademark Office, 2010-10-26)
A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. The inductors are inversely coupled. In a first embodiment, the converter includes a toroidal magnetic core with ...
Adaptive bus voltage positioning for two-stage voltage regulators
(United States Patent and Trademark Office, 2007-01-09)
Alteration of voltage input to a voltage regulator output stage from a V<sub>bus </sub>regulator stage in a two-stage voltage regulator provides optimal V<sub>bus </sub>voltage placement for a wide range of current loads ...