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公开(公告)号：US20220239282A1
公开(公告)日：2022-07-28
申请号：US17668225
申请日：2022-02-09
发明人： Danting XU , Kun WU , Ziyang GAO
摘要： An active filter reduces Electro-Magnetic Interference (EMI) created by current flowing through a power line. The active filter connects to the power line at a single node through a connection capacitor. A sense current flows through the connection capacitor when the power line current changes. This sense current is applied to a gain control circuit having cross-coupled PNP transistors that drive currents to both terminals of a variable capacitor. The variable capacitor converts these currents to a voltage that is injected back into the power line through the connection capacitor as an injected compensation voltage that compensates for the sensed current.
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2.发明公开公开(公告)号：US20230363121A1
公开(公告)日：2023-11-09
申请号：US18223675
申请日：2023-07-19
发明人： Danting XU , Kun WU , Ziyang GAO
摘要： A power-converter module has a switching Printed Circuit Board (PCB) with power transistors generating heat. Ground, an input power supply, and an output power supply to the power transistors connect through metal traces on the switching PCB directly to interposer heat sinks that are soldered to the switching PCB. Copper bars attached to the bottoms of interposer heat sinks fit in holes in a system PCB to make connections. The metal traces and interposer heat sinks carry supply or ground currents and heat away from the power transistors. These power and ground currents continue from the interposer heat sinks through the copper bars to the system PCB. An interposer PCB has soler pads and solder balls to carry control signals from the system PCB to the switching PCB, bypassing the interposer heat sinks. Copper bars can be sintered, soldered, or welded to or integral with the interposer heat sinks.
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公开(公告)号：US20230268261A1
公开(公告)日：2023-08-24
申请号：US17676960
申请日：2022-02-22
发明人： Danting XU , Kun WU , Ziyang GAO
IPC分类号： H01L23/498 , H01L23/367 , H05K7/14
CPC分类号： H01L23/49827 , H01L23/367 , H01L23/49816 , H05K7/1432 , H05K2201/10378 , H01L2924/15311 , H02M1/00
摘要： A power-converter module has a switching Printed Circuit Board (PCB) with power transistors that generate heat. Ground, an input power supply, and an output power supply to the power transistors connect through metal traces on the switching PCB directly to interposer heat sinks that are soldered between the switching PCB and a system PCB. The metal traces and interposer heat sinks carry both supply or ground currents and heat away from the power transistors. These power and ground currents continue from the interposer heat sinks to the system PCB through direct solder joints between the system PCB and the interposer heat sinks. An interposer PCB has a same thickness as the interposer heat sinks and carries control signals from the system PCB to the switching PCB, bypassing the interposer heat sinks. The interposer heat sinks have an interposer portion soldered between the PCBs and fins beyond the switching PCB footprint.
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公开(公告)号：US20210070185A1
公开(公告)日：2021-03-11
申请号：US16561274
申请日：2019-09-05
发明人： Xuechao LIU , Kin Lap WONG , Qingchun LI , Bin XIE , Danting XU
摘要： A smart power hub has an AC port, a first DC port to a car battery, a second DC port to DC devices such as car instruments, and a third DC port to solar panels or another smart power hub. An AC bi-directional converter has six transistors in a B6 configuration to convert three-phase AC, acting as an interleaved totem-pole Power-Factor-Corrector for one-phase AC. A switch connects the DC bi-directional converter with either the AC bi-directional converter or the solar panels on the third DC port. A link capacitor has a DC link voltage that rises during battery charging. A DC bi-directional converter has a transformer, a primary bridge connected to the DC link voltage, and a secondary bridge of transistors connected to the first DC port. Auxiliary windings in the transformer drive a rectifier to the second DC port to power on-board DC devices. Solar DC charges the battery without AC conversion.
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