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1. 发明授权

US10128035B2 Coupled inductor arrays and associated methods 有权
公开(公告)号：US10128035B2
公开(公告)日：2018-11-13
申请号：US14974482
申请日：2015-12-18
申请人： Volterra Semiconductor LLC
发明人： Di Yao , Alexandr Ikriannikov
IPC分类号： H01F27/28 , H01F27/24 , H02M3/158 , H01F3/10 , H01F17/04 , H01F27/255 , H01F27/29 , H02M1/14 , H02M1/00
摘要： A coupled inductor array includes a monolithic magnetic core formed of magnetic materials having a distributed gap, first and second windings, and a low-permeability magnetic structure. The first and second windings form respective first and second winding turns around a common winding axis extending in the height direction. The low-permeability magnetic structure is embedded in the monolithic magnetic core and forms a loop around the common winding axis. The low-permeability magnetic structure separates the first and second winding turns in the height direction, and the low-permeability magnetic structure is formed of a magnetic material having a lower magnetic permeability than the one or more magnetic materials forming the monolithic magnetic core. One possible application of the coupled inductor array is in a multi-phase switching power converter.

2. 发明授权

US09559679B2 Integrated circuits including magnetic devices 有权
标题翻译：集成电路包括磁性器件
公开(公告)号：US09559679B2
公开(公告)日：2017-01-31
申请号：US14797392
申请日：2015-07-13
申请人： Volterra Semiconductor LLC
发明人： Alexandr Ikriannikov , Andrew J. Burstein , Anthony J. Stratakos
IPC分类号： H03K17/0412 , H01F27/28 , H01L23/64 , H01L25/16 , H01F17/00 , H02M3/158
CPC分类号： H03K17/0412 , H01F27/2804 , H01F2017/0086 , H01L23/645 , H01L25/16 , H01L2224/16245 , H01L2924/1305 , H01L2924/13091 , H01L2924/18161 , H02M3/158 , H02M3/1582 , H01L2924/00
摘要： An integrated circuit includes a semiconductor die including one or more switching circuits, a magnetic core having length and width, first and second metallic leads, and integrated circuit packaging material. The first metallic lead forms a first winding turn around a portion of the magnetic core, and the first metallic lead is electrically coupled to the semiconductor die. The second metallic lead forms a second winding turn around a portion of the magnetic core. The first and second winding turns are offset from each other along both of the width and length of the magnetic core. The integrated circuit is, for example, included in an integrated electronic assembly.
摘要翻译：集成电路包括：包括一个或多个开关电路的半导体管芯，具有长度和宽度的磁芯，第一和第二金属引线以及集成电路封装材料。第一金属引线围绕磁芯的一部分形成第一绕组，并且第一金属引线电耦合到半导体管芯。第二金属引线围绕磁芯的一部分形成第二绕组。第一和第二绕组匝彼此沿着磁芯的宽度和长度彼此偏移。集成电路例如包括在集成电子组件中。

3. 发明申请

US20160020698A1 Voltage Regulators with Kickback Protection 有权
标题翻译：具有反击保护功能的稳压器
公开(公告)号：US20160020698A1
公开(公告)日：2016-01-21
申请号：US14867831
申请日：2015-09-28
申请人： VOLTERRA SEMICONDUCTOR LLC
发明人： Chiteh Chiang , Marco A. Zuniga , Yang Lu
IPC分类号： H02M3/158 , H03K17/06
CPC分类号： H02M3/1588 , H02M3/156 , H02M2001/0054 , H03K17/063 , H03K2217/0036 , H03K2217/0081 , Y02B70/1466 , Y02B70/1491 , Y10T307/50
摘要： The subject matter of this document can be embodied in a method that includes a voltage regulator having an input terminal and an output terminal. The voltage regulator includes a high-side transistor between the input terminal and an intermediate terminal, and a low-side transistor between the intermediate terminal and ground. The voltage regulator includes a low-side driver circuit including a capacitor and an inverter. The output of the inverter is connected to the gate of the low-side transistor. The voltage regulator also includes a controller that drives the high-side and low-side transistors to alternately couple the intermediate terminal to the input terminal and ground. The controller is configured to drive the low-side transistor by controlling the inverter. The voltage regulator further includes a switch coupled to the low-side driver circuit. The switch is configured to block charge leakage out of the capacitor during an off state of the low-side transistor.
摘要翻译：本文的主题可以包括具有输入端和输出端的电压调节器的方法。电压调节器包括在输入端和中间端之间的高边晶体管，以及中间端与地之间的低端晶体管。电压调节器包括包括电容器和反相器的低侧驱动电路。逆变器的输出端连接到低侧晶体管的栅极。电压调节器还包括驱动高侧和低侧晶体管以将中间端子交替耦合到输入端和地的控制器。控制器通过控制逆变器来驱动低端晶体管。电压调节器还包括耦合到低侧驱动电路的开关。开关被配置为在低侧晶体管的断开状态期间阻断电容器的电荷泄漏。

4. 发明申请

US20150318248A1 Integrated Circuits Including Magnetic Devices, And Associated Methods 有权
标题翻译：包括磁性器件的集成电路及相关方法
公开(公告)号：US20150318248A1
公开(公告)日：2015-11-05
申请号：US14797392
申请日：2015-07-13
申请人： Volterra Semiconductor LLC
发明人： Alexandr Ikriannikov , Andrew J. Burstein , Anthony J. Stratakos
IPC分类号： H01L23/64 , H02M3/158 , H01L25/16
CPC分类号： H03K17/0412 , H01F27/2804 , H01F2017/0086 , H01L23/645 , H01L25/16 , H01L2224/16245 , H01L2924/1305 , H01L2924/13091 , H01L2924/18161 , H02M3/158 , H02M3/1582 , H01L2924/00
摘要： An integrated circuit includes a semiconductor die including one or more switching circuits, a magnetic core having length and width, first and second metallic leads, and integrated circuit packaging material. The first metallic lead forms a first winding turn around a portion of the magnetic core, and the first metallic lead is electrically coupled to the semiconductor die. The second metallic lead forms a second winding turn around a portion of the magnetic core. The first and second winding turns are offset from each other along both of the width and length of the magnetic core. The integrated circuit is, for example, included in an integrated electronic assembly.
摘要翻译：集成电路包括：包括一个或多个开关电路的半导体管芯，具有长度和宽度的磁芯，第一和第二金属引线以及集成电路封装材料。第一金属引线围绕磁芯的一部分形成第一绕组，并且第一金属引线电耦合到半导体管芯。第二金属引线围绕磁芯的一部分形成第二绕组。第一和第二绕组匝彼此沿着磁芯的宽度和长度彼此偏移。集成电路例如包括在集成电子组件中。

5. 发明授权

US11062830B1 Magnetic devices for power converters with light load enhancers 有权
公开(公告)号：US11062830B1
公开(公告)日：2021-07-13
申请号：US16360612
申请日：2019-03-21
申请人： Volterra Semiconductor LLC
发明人： Alexandr Ikriannikov , Anthony J. Stratakos
IPC分类号： H01F27/28 , H01F3/10 , H02M3/155 , H01F27/38 , H01F38/08 , H02M1/44 , H01F38/02 , H02M1/00
摘要： A magnetic device includes a magnetic core, a plurality of first windings forming respective first winding turns, and a second winding forming a second winding turn. Each first winding turn is within the second winding turn, as seen when the magnetic device is viewed cross-sectionally in a first direction. Yet another magnetic device includes a magnetic core, one or more first windings, and one or more second windings magnetically isolated from the one or more first windings.

6. 发明授权

US10910142B1 Air core coupled inductors and associated systems and methods 有权
公开(公告)号：US10910142B1
公开(公告)日：2021-02-02
申请号：US16029944
申请日：2018-07-09
申请人： VOLTERRA SEMICONDUCTOR LLC
发明人： Alexandr Ikriannikov
IPC分类号： H01F27/28 , H02M1/15 , H02M3/158
摘要： A switching power converter includes a first and second switching device, an air core coupled inductor, and a controller. The air core coupled inductor includes a first winding electrically coupled to the first switching device and a second winding electrically coupled to the second switching device. The first and second windings are magnetically coupled. The controller is operable to cause the first and second switching devices to repeatedly switch between their conductive and non-conductive states at a frequency of at least 100 kilohertz to cause current through the first and second windings to repeatedly cycle, thereby providing power to an output port. The switching power converter may have a topology including, but not limited to, a buck converter topology, a boost converter topology, and a buck-boost converter topology.

7. 发明授权

US10276288B2 Coupled inductors with non-uniform winding terminal distributions 有权
公开(公告)号：US10276288B2
公开(公告)日：2019-04-30
申请号：US15645211
申请日：2017-07-10
申请人： Volterra Semiconductor LLC
发明人： Alexandr Ikriannikov
IPC分类号： H01F17/04 , H01F3/12 , H01F30/12 , H02M3/158
摘要： A coupled inductor includes a ladder magnetic core including two opposing rails extending in a lengthwise direction and joined by a plurality of rungs. The coupled inductor further includes a respective winding wound around each of the plurality of rungs. The plurality of rungs are divided into at least two groups of rungs, and a lengthwise separation distance between adjacent rungs in each group of rungs is less than a lengthwise separation distance between adjacent rungs of different groups of rungs.

8. 发明申请

US20170338731A1 VOLTAGE REGULATORS WITH MULTIPLE TRANSISTORS 审中-公开
公开(公告)号：US20170338731A1
公开(公告)日：2017-11-23
申请号：US15663249
申请日：2017-07-28
申请人： Volterra Semiconductor LLC
发明人： Marco A. Zuniga , Chiteh Chiang , Yang Lu , Badredin Fatemizadeh , Amit Paul , Jun Ruan , Craig Cassella
IPC分类号： H02M1/088 , H02M1/38 , H02M3/158
CPC分类号： H02M1/088 , H02M1/38 , H02M3/158 , H02M3/1588 , Y02B70/1466
摘要： A voltage regulator includes a high-side device, a low-side device, and a controller. The high-side device includes first and second transistors each coupled between an input terminal and an intermediate terminal, where the first transistor has a higher breakdown voltage than the second transistor. The low-side device is coupled between the intermediate terminal and a ground terminal. The controller is configured to drive the high-side and low-side devices to (a) alternately couple the intermediate terminal to the input terminal and the ground terminal and (b) cause the first transistor to control a voltage across the second transistor during switching transitions of the second transistor.

9. 发明授权

US09806001B2 Chip-scale packaging with protective heat spreader 有权
公开(公告)号：US09806001B2
公开(公告)日：2017-10-31
申请号：US14753514
申请日：2015-06-29
申请人： Volterra Semiconductor LLC
发明人： Mihalis Michael , Ilija Jergovic
IPC分类号： H01L23/367 , H01L23/31 , H01L23/42 , H01L21/56 , H01L23/00
CPC分类号： H01L23/3675 , H01L21/56 , H01L23/3107 , H01L23/3114 , H01L23/367 , H01L23/3672 , H01L23/42 , H01L24/13 , H01L24/27 , H01L24/29 , H01L24/32 , H01L24/73 , H01L24/75 , H01L24/83 , H01L24/92 , H01L24/97 , H01L2224/13082 , H01L2224/131 , H01L2224/16225 , H01L2224/16227 , H01L2224/2731 , H01L2224/32245 , H01L2224/73253 , H01L2224/75745 , H01L2224/81191 , H01L2224/83191 , H01L2224/83192 , H01L2224/83193 , H01L2224/838 , H01L2224/83855 , H01L2224/83862 , H01L2224/83874 , H01L2224/92242 , H01L2224/97 , H01L2224/98 , H01L2924/00011 , H01L2924/00014 , H01L2924/14 , H01L2924/1426 , H01L2924/181 , H01L2224/81 , H01L2224/83 , H01L2924/014 , H01L2924/00 , H01L2224/0401
摘要： A semiconductor package can include a semiconductor die having an integrated circuit, a first die surface, and an opposite second die surface. A packaging can be attached to the die and have a holder surface opposite the first die surface. A heat spreader can be configured to cover the second die surface and the packaging surface and can be attached thereto by a layer of adhesive positioned between the heat spreader and the semiconductor die. A semiconductor package array can include an array of semiconductor dies and a heat spreader configured to cover each semiconductor die. A conductive lead can be electrically connected to the integrated circuit in a semiconductor die and can extend from the first die surface. Manufacturing a semiconductor package can include applying thermally conductive adhesive to the heat spreader and placing the heat spreader proximate the semiconductor die.

10. 发明授权

US09767947B1 Coupled inductors enabling increased switching stage pitch 有权
公开(公告)号：US09767947B1
公开(公告)日：2017-09-19
申请号：US14805981
申请日：2015-07-22
申请人： Volterra Semiconductor LLC
发明人： Alexandr Ikriannikov
IPC分类号： H01F27/28 , H01F5/04 , H02M3/158
CPC分类号： H01F5/04 , H01F3/14 , H01F17/04 , H01F27/2847 , H01F2005/043 , H02M3/1584
摘要： A coupled inductor includes a first end magnetic element, a second end magnetic element, N connecting magnetic elements, and N windings, where N is an integer greater than one. Each of the N connecting magnetic elements connects to both of the first and second end magnetic elements. Each of the N windings is wound around a respective one of the N connecting magnetic elements such that the N windings are wound in alternating opposing directions. Possible applications of the coupled inductor include, but are not limited to, switching power converter applications.

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