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公开(公告)号：US10763759B1
公开(公告)日：2020-09-01
申请号：US16360781
申请日：2019-03-21
申请人： VLT, Inc.
摘要： An efficient, high density, inline converter module includes a power conversion circuit and an input wiring harness for connecting the input of the power circuit to a unipolar source. A second wiring harness or electrical connectors may be provided for connecting the output of the power conversion circuit to a load. Connections between a wiring harness and the power conversion circuit may comprise conductive contacts, configured to distribute heat. The power circuit may be over molded to provide electrical insulation and efficient heat transfer to external ambient air. A DC transformer based inline converter module may be used in AC adapter, vehicular, and power system architectures. An input connector for connecting the input wiring harness to the input source may be provided. In some embodiments the input source may be an AC source and the input connector may comprise a rectifier for delivering a rectified, unipolar, voltage to the input of the power conversion assembly via an input wiring harness. By separating the rectifier from the power conversion assembly, the power conversion assembly may be packaged into a smaller volume than would be required if the rectifier, and its associated heat loss, were included in the power conversion assembly.
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公开(公告)号：US10701828B1
公开(公告)日：2020-06-30
申请号：US15150875
申请日：2016-05-10
申请人： VLT, Inc.
发明人： Patrizio Vinciarelli , Michael B. LaFleur , Sean Timothy Fleming , Rudolph F. Mutter , Andrew T. D'Amico
IPC分类号： H05K1/00 , H05K1/18 , H05K7/00 , H05K7/14 , H05K1/11 , B29C45/14 , B29C45/00 , B29C45/16 , B29K63/00
摘要： A method of encapsulating a panel of electronic components such as power converters reduces wasted printed circuit board area. The panel, which may include a plurality of components, may be cut into one or more individual pieces after encapsulation with the mold forming part of the finished product, e.g. providing heat sink fins or a surface mount solderable surface. Interconnection features provided along boundaries of individual circuits are exposed during the singulation process providing electrical connections to the components without wasting valuable PCB surface area. The molds may include various internal features such as registration features accurately locating the circuit board within the mold cavity, interlocking contours for structural integrity of the singulated module, contours to match component shapes and sizes enhancing heat removal from internal components and reducing the required volume of encapsulant, clearance channels providing safety agency spacing and setbacks for the interconnects. Wide cuts may be made in the molds after encapsulation reducing thermal stresses and reducing the thickness of material to be cut during subsequent singulation. External mold features can include various fin configurations for heat sinks, flat surfaces for surface mounting or soldering, etc. Blank mold panels may be machined to provide some or all of the above features in an on-demand manufacturing system. Connection adapters may be provided to use the modules in vertical or horizontal mounting positions in connector, through-hole, surface-mount solder variations. The interconnects may be plated to provide a connectorized module that may be inserted into a mating connector.
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公开(公告)号：US10658923B1
公开(公告)日：2020-05-19
申请号：US16581580
申请日：2019-09-24
申请人： VLT, Inc.
发明人： Patrizio Vinciarelli
摘要： A power converter system converts power from an input source for delivery to an active load. An input current surge at startup may be reduced by combining power converter switch resistance modulation with active load control. In another aspect, an input current surge at startup in an array of power converters may be reduced by periodically reconfiguring the array during the startup phase to accumulatively increase the output voltage up to a predetermined output voltage. A power converter may include a controller that provides an over-current signal to the load to reduce the load or advise of potential voltage perturbations.
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公开(公告)号：US10651744B1
公开(公告)日：2020-05-12
申请号：US16591842
申请日：2019-10-03
申请人： VLT, Inc.
发明人： Patrizio Vinciarelli
IPC分类号： H05K1/11 , H02M3/335 , H02M1/44 , H01F1/44 , H01F3/10 , H05K3/00 , H05K1/18 , H05K1/02 , H05K1/16 , H05K3/02 , H01F27/28 , H01F41/04 , H02M3/337 , H02M1/00
摘要： 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：US10199950B1
公开(公告)日：2019-02-05
申请号：US13933252
申请日：2013-07-02
申请人： VLT, INC.
IPC分类号： H02M3/335
摘要： Apparatus for power conversion are provided. One apparatus includes a power converter including an input circuit and an output circuit. The power converter is configured to receive power from a source for providing power at a DC source voltage VS. The power converter is adapted to convert power from the input circuit to the output circuit at a substantially fixed voltage transformation ratio KDC=VOUT/VIN at an output current, wherein VIN is an input voltage and VOUT is an output voltage. The input circuit and at least a portion of the output circuit are connected in series across the source, such that an absolute value of the input voltage VIN applied to the input circuit is approximately equal to the absolute value of the DC source voltage VS minus a number N times the absolute value of the output voltage VOUT, where N is at least 1.
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公开(公告)号：US10153704B1
公开(公告)日：2018-12-11
申请号：US16003185
申请日：2018-06-08
申请人： VLT, Inc.
发明人： Patrizio Vinciarelli
摘要： A power converter including a transformer, a resonant circuit including the transformer and a resonant capacitor having a characteristic resonant frequency and period, and output circuitry connected to the transformer for delivering a rectified output voltage to a load. Primary switches drive the resonant circuit, a switch controller operates the primary switches in a series of converter operating cycles which include power transfer intervals of adjustable duration during which a resonant current at the characteristic resonant frequency flows through a winding of the transformer. The operating cycles may also include energy recycling intervals of variable duration for charging and discharging capacitances within the converter. A gate driver includes a transformer, a plurality of switches, a current monitor, and a controller that operates the switches in a series of driver operating cycles having adjustable ON periods and adjustable transition periods during which capacitances are resonantly charged and discharged.
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公开(公告)号：US09571084B1
公开(公告)日：2017-02-14
申请号：US14681254
申请日：2015-04-08
申请人： VLT, Inc.
发明人： Patrizio Vinciarelli
IPC分类号： H03K17/687 , H03K17/06 , H03K17/30
CPC分类号： 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
摘要： 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.
摘要翻译： 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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公开(公告)号：US09325247B1
公开(公告)日：2016-04-26
申请号：US14874054
申请日：2015-10-02
申请人： VLT, INC.
发明人： Patrizio Vinciarelli
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A power converter including a transformer, a resonant circuit including the transformer and a resonant capacitor having a characteristic resonant frequency and period, and output circuitry connected to the transformer for delivering a rectified output voltage to a load. Primary switches drive the resonant circuit, a clamp switch is connected to shunt the resonant capacitor, and a switch controller operates the primary switches and the clamp switch in a series of converter operating cycles. The converter operating cycles include power transfer intervals including resonant intervals during which a resonant current at the characteristic resonant frequency flows through a winding of the transformer; and a clamp interval during which the clamp switch provides a low impedance shunt across the resonant capacitor holding the resonant capacitor at a voltage at or near zero volts. The operating cycles may also include energy recycling intervals for charging and discharging capacitances within the converter.
摘要翻译： 包括变压器的电力转换器，包括变压器的谐振电路和具有特征谐振频率和周期的谐振电容器，以及连接到变压器的输出电路，用于将整流的输出电压传递到负载。 主开关驱动谐振电路，连接钳位开关以分流谐振电容器，开关控制器在一系列转换器工作周期中操作主开关和钳位开关。 转换器操作周期包括功率传递间隔，包括在特征谐振频率下的谐振电流流过变压器的绕组的谐振间隔; 钳位开关在谐振电容器两端提供低阻抗并联，钳位开关将谐振电容器保持在零伏特或接近零伏的电压。 操作循环还可以包括用于在转换器内充电和放电电容的能量循环间隔。
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