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公开(公告)号：US11228246B1
公开(公告)日：2022-01-18
申请号：US16282278
申请日：2019-02-21
Applicant: VLT, Inc.
Inventor： Patrizio Vinciarelli
Abstract: An isolated, power factor corrected, converter, for operation from a three-phase AC source, comprises three power processors, each power processor connected to one of the three phases. Each power processor comprises a cascade of a first and a second power conversion stage. At least one of the first and second power converters in each power processor is configured to provide galvanic isolation through a DC Transformer between the power processor input and output. At least one of the first and second power converters in each power processor is configured to provide power factor correction at the AC source. Substantially all of the bulk energy storage and low frequency filtering is provided by storage elements at the output of the power system. Low voltage semiconductor devices may be cascaded to implement low output capacitance high voltage switches in a multi-cell resonant converter for high voltage applications.
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公开(公告)号：US10700599B2
公开(公告)日：2020-06-30
申请号：US15179521
申请日：2016-06-10
Applicant: VLT, INC.
Inventor： Patrizio Vinciarelli
Abstract: A power system includes a power conversion stage that receives power from an input source and delivers power to a load via a power distribution bus. A control system samples the voltage delivered by the power conversion stage at a location close to the output of the power conversion stage and the load voltage at a location close to the load. The control system further measures the current flowing between the output and the load through the power bus. The samples may be used to determine a representation of the bus resistance. The determined bus resistance may be used to introduce a negative resistance characteristic in the power conversion stage as a way of compensating for the actual bus resistance.
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公开(公告)号：US10454380B1
公开(公告)日：2019-10-22
申请号：US16135698
申请日：2018-09-19
Applicant: VLT, Inc.
Inventor： Patrizio Vinciarelli
Abstract: A semiconductor package includes a VLSI semiconductor die and one or more output circuits connected to supply power to the die mounted to a package substrate. The output circuit(s), which include a transformer and rectification circuitry, provide current multiplication at an essentially fixed conversion ratio, K, in the semiconductor package, receiving AC power at a relatively high voltage and delivering DC power at a relatively low voltage to the die. The output circuits may be connected in series or parallel as needed. A driver circuit may be provided outside the semiconductor package for receiving power from a source and driving the transformer in the output circuit(s), preferably with sinusoidal currents. The driver circuit may drive a plurality of output circuits. The semiconductor package may require far fewer interface connections for supplying power to the die.
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公开(公告)号：US10014798B1
公开(公告)日：2018-07-03
申请号：US15456055
申请日：2017-03-10
Applicant: VLT, Inc.
Inventor： Patrizio Vinciarelli
CPC classification number: H02M7/219 , G06F1/263 , G06F1/3287 , H01L2924/181 , H02M1/32 , H02M1/38 , H02M3/33507 , H02M3/33576 , H02M7/003 , H02M2001/0032 , H02M2001/325 , H03K17/063 , H03K17/302 , H03K17/6871 , Y02B70/1433 , Y02B70/16
Abstract: A power converter provides a low-voltage output using a full-bridge fault-tolerant rectification circuit. The output circuit uses controlled switches as rectifiers. A fault detection circuit monitors circuit conditions. Upon detection of a fault, the switches are disabled decoupling the power converter from the system.A common-source dual MOSFET device includes a plurality of elements arranged in alternating patterns on a semiconductor die. A common-source dual synchronous rectifier includes control circuitry powered from the drain to source voltage of the complementary switch.A DC-to-DC transformer converts power from an input source to a load using a fixed voltage transformation ratio. A clamp phase may be used to reduce power losses in the converter at light loads, control the effective output resistance of the converter, effectively regulate the voltage transformation ratio, provide narrow band output regulation, and control the rate of change of output voltage for example during start up. One or more of the transformer windings may be clamped. The converter may use the sine amplitude converter topology. The converter may use common-source dual MOSFET devices and fault detection.The density of point of load power conversion may be increased and the associated power dissipation reduced by removing the input driver circuitry from the point of load where it is not necessary. An output circuit may be located at the point of load providing fault tolerant rectification of the AC power from the secondary winding of a power transformer which may be located nearby the output circuit. The resonant voltage and current waveforms on the primary side of the transformer are readily communicated via an AC bus between the driver circuit and the primary winding of the power transformer. The driver circuit may drive a plurality of transformer-output circuit pairs. The transformer and output circuit may be combined in a single module at the point of load. Alternatively, the output circuit may be integrated into point of load circuitry such as a processor core. The transformer may be deployed near the output circuit.
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公开(公告)号：US09936580B1
公开(公告)日：2018-04-03
申请号：US14596914
申请日：2015-01-14
Applicant: VLT, Inc.
CPC classification number: B23K1/20 , B23K1/0016 , B23K2001/12 , H05K1/0209 , H05K3/284 , H05K7/20409 , H05K2201/10166 , H05K2201/1034 , H05K2203/1316
Abstract: Circuit assemblies can be electrically interconnected by providing a circuit assembly having a top surface, a bottom surface, and a perimeter edge connecting the top and bottom surfaces, the perimeter edge being formed of insulative material and having a plurality of conductive features embedded in and exposed on the surface of the edge. The conductive features are arranged in contact sets, and each contact set is separated from adjacent contact sets by a portion of the perimeter edge that is free of conductive features. Each contact set includes conductive features that together form a distributed electrical connection to a single node. The insulative material is selectively removed to form recesses adjacent the conductive features exposing additional surface contact areas along lateral portions of the conductive features in the recesses.
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Patent Agency Ranking
公开(公告)号：US09899924B1
公开(公告)日：2018-02-20
申请号：US15227722
申请日：2016-08-03
Applicant: VLT, Inc.
Inventor： Patrizio Vinciarelli
CPC classification number: H02M3/1582 , H02M3/158 , H02M2001/0058 , Y02B70/1491
Abstract: A switching power converter converts power from an input source for delivery to a load at the converter output. The converter comprises at least two switches connected in series across either the input source or the output, and an inductor connected to a central node between the two switches. A controller operates the converter in a series of converter operating cycles, each operating cycle comprising an input phase, during which one of the two switches is conductive, the inductor receives energy from the input source, and a current in the inductor is increasing positively, phase. The controller is configured to adjust the duration of the input phase, and the amount of energy stored in the inductor at the end of the input phase, as a function of a an amount of energy required to charge or discharge the node capacitance during the energy recycling phase.
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公开(公告)号：US20180041125A1
公开(公告)日：2018-02-08
申请号：US15227722
申请日：2016-08-03
Applicant: VLT, Inc.
Inventor： Patrizio Vinciarelli
CPC classification number: H02M3/1582 , H02M3/158 , H02M2001/0058 , Y02B70/1491
Abstract: A switching power converter converts power from an input source for delivery to a load at the converter output. The converter comprises at least two switches connected in series across either the input source or the output, and an inductor connected to a central node between the two switches. A controller operates the converter in a series of converter operating cycles, each operating cycle comprising an input phase, during which one of the two switches is conductive, the inductor receives energy from the input source, and a current in the inductor is increasing positively, phase. The controller is configured to adjust the duration of the input phase, and the amount of energy stored in the inductor at the end of the input phase, as a function of a an amount of energy required to charge or discharge the node capacitance during the energy recycling phase.
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公开(公告)号：US20170358978A1
公开(公告)日：2017-12-14
申请号：US15179521
申请日：2016-06-10
Applicant: VLT, INC.
Inventor： Patrizio Vinciarelli
IPC: H02M1/00
CPC classification number: H02M3/00 , H02M2001/0019
Abstract: A power system includes a power conversion stage that receives power from an input source and delivers power to a load via a power distribution bus. The power distribution bus may include a DC transformer such as a fixed ratio bus converter or VTM having an equivalent series resistance. A control system samples the voltage delivered by the power conversion stage at a location close to the output of the power conversion stage, and the load voltage at a location close to the load. The samples may be synchronized by means of a data bus that provides communication between a control device and an output monitor. Synchronization may be accomplished within a sampling period that is short relative to changes in the voltages and currents. Each set of samples may be used to determine a value of the bus resistance. Multiple samples may be averaged to improve accuracy in the determination. The determined bus resistance, including the equivalent series resistance of any bus converter, may be used to introduce a negative resistance characteristic in the power conversion stage as a way of compensating for the actual bus resistance without resorting to full bandwidth feedback from the load.
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公开(公告)号：US09697947B1
公开(公告)日：2017-07-04
申请号：US14942352
申请日：2015-11-16
Applicant: VLT, Inc.
Inventor： Sergey Luzanov
CPC classification number: H01F27/2804 , H01F5/00 , H01F27/02 , H01F27/29 , H01F27/292 , H01F41/02 , H01F41/041 , H01F2027/2809 , H05K1/111 , H05K1/141 , H05K3/303 , H05K3/366 , H05K3/403
Abstract: An vertical PCB inductive device is adapted to be surface mount soldered to a substrate. The inductive device may comprise a transformer having a plurality of windings or one or more discrete inductive devices. The inductive device, being amenable to volume production, may also provide cost savings by reducing the number of layers and the PCB area otherwise required by planar magnetics in a power converter. A power converter may be fashioned to be vertically oriented and surface mount soldered to a substrate such as a customer PCB.
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公开(公告)号：US09584026B1
公开(公告)日：2017-02-28
申请号：US14681330
申请日：2015-04-08
Applicant: VLT, Inc.
Inventor： Patrizio Vinciarelli
CPC classification number: H02M7/219 , G06F1/263 , G06F1/3287 , H01L2924/181 , H02M1/32 , H02M1/38 , H02M3/33507 , H02M3/33576 , H02M7/003 , H02M2001/0032 , H02M2001/325 , H03K17/063 , H03K17/302 , H03K17/6871 , Y02B70/1433 , Y02B70/16
Abstract: Low-voltage outputs are provided by full-bridge rectification using controlled switches with fault detection monitoring of circuit conditions and disabling switches upon detection of a fault to decouple the converter from the system. Common-source dual MOSFET devices include elements arranged in alternating patterns on the die. Common-source dual synchronous rectifiers include control circuitry powered from the voltage across the complementary switch. A DC-to-DC transformer converts power using a fixed voltage transformation ratio. A clamp phase may be used to reduce power losses, control the output resistance, effectively regulate the voltage transformation ratio, provide narrow band output regulation, and control the rate of change of output voltage. A new point of load converter includes input driver circuitry removed from and output circuitry located at the point of load, with a transformer located near the output circuit and an AC bus between the driver circuit and the primary winding of the transformer.
Abstract translation: 低压输出通过全桥整流提供，使用受控开关，故障检测监控电路条件，并在检测到故障时禁用开关，以将转换器与系统分离。 共源双MOSFET器件包括在模具上以交替图案排列的元件。 共源双同步整流器包括由互补开关上的电压供电的控制电路。 DC-DC变压器使用固定电压变换比转换功率。 可以使用钳位相位来降低功率损耗，控制输出电阻，有效调节电压变换比，提供窄带输出调节，并控制输出电压变化率。 新的负载转换点包括从位于负载点处的输入驱动器电路和位于输出电路附近的变压器以及驱动电路和变压器初级绕组之间的AC母线。
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