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VLT, Inc. Patents
Assignee:
VLT, Inc.
Address:
Sunnyvale, CA
No. of patents:
30
Patents:




Patent Number Title Of Patent Date Issued
D520947 Power converter body May 16, 2006
D510906 Power converter October 25, 2005
D506438 Power converter body June 21, 2005
D505114 Ball grid array May 17, 2005
7423892 Adaptively configured and autoranging voltage transformation module arrays September 9, 2008
A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally regulate the output voltage for a wide range of input voltages. An integrated adaptive arra
7420825 Adaptively configured voltage transformation module array September 2, 2008
A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally regulate the output voltage for a wide range of input voltages. An integrated adaptive arra
7408795 Energy storage and hold-up method and apparatus for high density power conversion August 5, 2008
A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally regulate the output voltage for a wide range of input voltages. An integrated adaptive arra
7361844 Power converter package and thermal management April 22, 2008
Power conversion apparatus includes a circuit board with power conversion circuitry and a package having an upper portion and a lower portion that respectively enclose circuitry on a top surface and a bottom surface of the circuit board. The lower portion encloses a smaller region than t
7353587 Forming distributed gap magnetic cores April 8, 2008
A method of manufacturing a magnetic core includes providing a substrate with magnetically permeable material that has a first region and a second region near the first region, providing support to maintain a juxtaposition between the first region and the second region, forming a sli
7236086 Power converter configuration, control, and construction June 26, 2007
A transformer having galvanically isolated windings defines a primary side and a secondary side of a power conversion apparatus. A switch couples power from a source on the primary side via the transformer to a load on the secondary side. A first circuit assembly has primary-side circuit
7233469 Components having actively controlled circuit elements June 19, 2007
Protection and filtering functions are provided for external circuits by internal circuits that use controlled elements.
7212419 Adaptively configured and autoranging voltage transformation module arrays May 1, 2007
A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally regulate the output voltage for a wide range of input voltages. An integrated adaptive arra
7202646 Control interface with droop compensation April 10, 2007
A droop compensation system includes a controlled current source that provides a scaled model of the PRM output current or VTM input current on an interface connection. A controlled resistance modeling the VTM effective series input resistance is connected across the interface termin
7187263 Printed circuit transformer March 6, 2007
A circuit board has apertures. Separate magnetic flux paths each form a closed loop that passes through at least one of the apertures and surrounds an interior space. The flux paths comprising portions that lie within magnetically permeable core pieces. At least two of the flux paths
7170764 Adaptively configured voltage transformation module array January 30, 2007
A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally regulate the output voltage for a wide range of input voltages. An integrated adaptive arra
7154250 Buck-boost DC--DC switching power conversion December 26, 2006
Apparatus operates at a power level within a range of power levels that includes a rated maximum power level of the apparatus. The apparatus includes circuit elements to deliver power at an output voltage to a load from a source at an input voltage using an inductor selectively connected
7145786 Point of load sine amplitude converters and methods December 5, 2006
In a preferred embodiment, a Sine Amplitude Converter ("SAC") method and apparatus for VTMs converts a DC input voltage to a DC output voltage using a fixed transformation ratio at a frequency locked to a resonance. The SAC uses a resonant circuit including a transformer and complementar
7038917 Low loss, high density array interconnection May 2, 2006
An interconnect architecture in which a substrate such as a printed circuit board includes multiple conductive layers separated by one or more interposed insulating layers, the conductive layers being adapted to receive a high density array of interconnect elements such as a ball grid
7015561 Active rectifier March 21, 2006
A switching circuit has an active switch, a controller, and at least two terminals. The at least two terminals include two current control terminals for connection at two locations in another circuit. The controller is configured to turn the active switch off to block current between
6985341 Components having actively controlled circuit elements January 10, 2006
Circuitry provides various protection mechanisms to an external circuit using actively controlled elements. The controlled elements may by controlled to provide overcurrent, overvoltage, or undervoltage protection to an external circuit.
6984965 Factorized power architecture with point of load sine amplitude converters January 10, 2006
A Factorized Power Architecture ("FPA") method and apparatus includes a front end power regulator ("PRM) which provides one or more controlled DC bus voltages which are distributed through the system and converted to the desired load voltages using one or more DC voltage transformation
6975098 Factorized power architecture with point of load sine amplitude converters December 13, 2005
A Factorized Power Architecture ("FPA") method and apparatus for supplying power to highly transient loads such as microprocessors includes a front end power regulator ("PRM) which provides a controlled DC bus voltage which is converted to the desired load voltage using a DC voltage
6969909 Flip chip FET device November 29, 2005
In accordance with one embodiment of the invention, a semiconductor device includes conductive pad areas, and each conductive pad area is electrically connected to a plurality of metal traces which are in turn each connected to diffusions. A conductive contact element such as a solde
6940022 Protective coating for an electronic device September 6, 2005
An electronic device includes a surface and a conductive termination on the surface. A protective conformal coating on the surface of the electronic device includes a window formed in the protective coating to expose a portion of the conductive termination. The exposed portion of the
6940013 Surface mounting a power converter September 6, 2005
A power converter includes electrical contacts arranged on a first surface and a connection device. The converter has a top surface above the first surface and a bottom surface below the first surface. A border of the bottom surface is inset from a border of the second surface. The c
6934166 Output resistance modulation in power converters August 23, 2005
Modulation control circuitry modulates the equivalent output resistance of a power converter, for example a Sine Amplitude Converter, by varying the ON resistance of the primary switches in the converter. The modulation control circuitry may be used to "soft-start" the converter, perform
6930893 Factorized power architecture with point of load sine amplitude converters August 16, 2005
A Factorized Power Architecture ("FPA") includes a power regulator providing controlled DC bus voltages distributed and converted to load voltages, at the load, using DC voltage transformation modules ("VTMs") having fixed transformation ratios. Optional feedback from the load improv
6911848 Low-loss transformer-coupled gate driver June 28, 2005
Low-loss, common-source gate-control topologies may be used to efficiently drive a multiplicity of switches at frequencies greater than 1 MHz and over a range of duty cycles, including 50%. The control switches can be controlled at high speed using simple, directly-coupled drive circuitr
6847853 Fabrication rules based automated design and manufacturing system and method January 25, 2005
An automated custom power supply design system uses an expert system containing a set of rules, including manufacturing limitations to limit design choices and ensure feasibility and manufacturability of the design. A design interface collects specifications from a user. A complement of
6788033 Buck-boost DC-DC switching power conversion September 7, 2004
Apparatus operates at a power level within a range of power levels that includes a rated maximum power level of the apparatus. The apparatus includes circuit elements to deliver power at an output voltage to a load from a source at an input voltage using an inductor selectively connected

 
 
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