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公开(公告)号：US10790760B2
公开(公告)日：2020-09-29
申请号：US15416150
申请日：2017-01-26
发明人： Pedro Angel Fernandez , Bing Cai , Yuyu Qiao
摘要： A dual voltage power system for selectively providing direct current (DC) at two different voltages. The system includes a plurality of universal rectifiers each of which may be configured to operate under a plurality of operating modes using a plurality of switches which may be controlled by a power shelf controller.
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2.发明申请公开(公告)号：US20190074774A1
公开(公告)日：2019-03-07
申请号：US16173904
申请日：2018-10-29
发明人： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
摘要： A system comprises an input power stage coupled to a primary side of a transformer, an output power stage coupled to a secondary side of a transformer, a first common node capacitor and a common node resistor connected in series between a midpoint of the secondary side of the transformer and ground and a detector having an input connected to a common node of the first common node capacitor and the common node resistor, and an output connected to a control circuit, wherein the control circuit is configured to dynamically adjust a switching frequency of the system based upon an output of the detector.
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3.发明申请Apparatus and Efficiency Point Tracking Method for High Efficiency Resonant Converters 审中-公开高效率谐振转换器的装置和效率点跟踪方法公开(公告)号：US20160380547A1
公开(公告)日：2016-12-29
申请号：US15263121
申请日：2016-09-12
发明人： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
CPC分类号： H02M3/33507 , H02M1/14 , H02M3/156 , H02M3/22 , H02M3/325 , H02M3/33523 , H02M3/33569 , H02M3/33576 , H02M3/33592 , H02M3/337 , H02M3/3376 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A method comprises connecting a first resonant converter and a second resonant converter in parallel, detecting a first signal indicating a first soft switching process of the first resonant converter and a second signal indicating a second soft switching process of the second resonant converter and adjusting a first switching frequency of the first resonant converter by a first control circuit and a second switching frequency of the second resonant converter by a second control circuit until a load current flowing through the first resonant converter is substantially equal to a load current flowing through the second resonant converter.
摘要翻译： 一种方法包括并联连接第一谐振转换器和第二谐振转换器，检测指示第一谐振转换器的第一软开关处理的第一信号和指示第二谐振转换器的第二软开关处理的第二信号， 通过第二控制电路通过第一控制电路和第二谐振变换器的第二开关频率使第一谐振变换器的开关频率直到流过第一谐振变换器的负载电流基本上等于流经第二谐振变换器的负载电流 。
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公开(公告)号：US20150109824A1
公开(公告)日：2015-04-23
申请号：US14056532
申请日：2013-10-17
发明人： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/14 , H02M3/156 , H02M3/22 , H02M3/325 , H02M3/33523 , H02M3/33569 , H02M3/33576 , H02M3/33592 , H02M3/337 , H02M3/3376 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A converter comprises an input stage coupled to a power source, wherein the input stage comprises a plurality of power switches, a resonant tank coupled to the plurality of power switches, a transformer coupled to the resonant tank, an output stage coupled to the transformer, an efficiency point tracking indicator coupled to the converter, a detector coupled to the efficiency point tracking indicator and a control circuit configured to receive an efficiency point tracking signal from the detector and adjust a switching frequency of the power switches based upon the efficiency point tracking signal.
摘要翻译： A转换器包括耦合到电源的输入级，其中所述输入级包括多个功率开关，耦合到所述多个功率开关的谐振槽，耦合到所述谐振回路的变压器，耦合到所述变压器的输出级， 耦合到转换器的效率点跟踪指示器，耦合到效率点跟踪指示器的检测器和配置成从检测器接收效率点跟踪信号的控制电路，并且基于效率点跟踪信号调整功率开关的开关频率 。
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公开(公告)号：US20170133944A1
公开(公告)日：2017-05-11
申请号：US15416150
申请日：2017-01-26
发明人： Pedro Angel Fernandez , Bing Cai , Yuyu Qiao
CPC分类号： H02M7/04 , H02J1/08 , H02M1/4266 , H02M2001/0067 , H02M2001/008 , Y10T307/406
摘要： A dual voltage power system for selectively providing direct current (DC) at two different voltages. The system includes a plurality of universal rectifiers each of which may be configured to operate under a plurality of operating modes using a plurality of switches which may be controlled by a power shelf controller.
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公开(公告)号：US20140306669A1
公开(公告)日：2014-10-16
申请号：US13923112
申请日：2013-06-20
发明人： Heping Dai , Daoshen Chen , Bing Cai
IPC分类号： H02M1/00
CPC分类号： H02M3/33507 , H02M3/156 , H02M2001/0022 , H02M2001/0025
摘要： A method for improving a power converter's efficiency comprises detecting an input voltage of a power converter, determining an operation mode of the power converter based upon the input voltage of the power converter and generating a plurality of gate drive signals based upon a damped gain control, wherein the damped gain control is configured such that an output voltage of the power converter is in a range from a tightly regulated output voltage to an unregulated output voltage.
摘要翻译： 一种用于提高功率转换器效率的方法，包括检测功率转换器的输入电压，基于功率转换器的输入电压确定功率转换器的工作模式，并基于阻尼增益控制产生多个栅极驱动信号， 其中所述阻尼增益控制被配置为使得所述功率转换器的输出电压处于从紧密调节的输出电压到未调节的输出电压的范围内。
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公开(公告)号：US20140070611A1
公开(公告)日：2014-03-13
申请号：US13955123
申请日：2013-07-31
发明人： Pedro Angel Fernandez , Bing Cai , Yuyu Qiao
IPC分类号： H02M7/04
CPC分类号： H02M7/04 , H02J1/08 , H02M1/4266 , H02M2001/0067 , H02M2001/008 , Y10T307/406
摘要： An apparatus comprising a first rectifier, wherein an output of the first rectifier is coupled to a first terminal, a second rectifier, wherein an output of the second rectifier is coupled to a second terminal, a first electronic switch configured to selectively route an alternating current (AC) signal to the first rectifier or the second rectifier, an inverter configured to operate in the event that the first electronic switch does not receive the AC signal to receive a direct current (DC) signal, and convert the DC signal to a second AC signal, a second electronic switch configured to selectively route the DC signal from the first terminal or the second terminal to the inverter, and a third electronic switch configured to selectively route the second AC signal to the first rectifier or the second rectifier.
摘要翻译： 一种包括第一整流器的装置，其中第一整流器的输出耦合到第一端子，第二整流器，其中第二整流器的输出耦合到第二端子，第一电子开关，被配置为选择性地布线交流 （AC）信号发送到第一整流器或第二整流器，反相器被配置为在第一电子开关未接收AC信号以接收直流（DC）信号的情况下操作，并将DC信号转换为第二整流器 AC信号，第二电子开关，被配置为将DC信号从第一端子或第二端子选择性地路由到逆变器;以及第三电子开关，被配置为选择性地将第二AC信号路由到第一整流器或第二整流器。
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公开(公告)号：US10116219B2
公开(公告)日：2018-10-30
申请号：US15263121
申请日：2016-09-12
发明人： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
摘要： A method comprises connecting a first resonant converter and a second resonant converter in parallel, detecting a first signal indicating a first soft switching process of the first resonant converter and a second signal indicating a second soft switching process of the second resonant converter and adjusting a first switching frequency of the first resonant converter by a first control circuit and a second switching frequency of the second resonant converter by a second control circuit until a load current flowing through the first resonant converter is substantially equal to a load current flowing through the second resonant converter.
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公开(公告)号：US20170179813A1
公开(公告)日：2017-06-22
申请号：US15451254
申请日：2017-03-06
发明人： Dianbo Fu , Hengchun Mao , Bing Cai
CPC分类号： H02M1/4208 , H02M1/32 , H02M1/4225 , H02M5/20 , H02M5/293 , Y02B70/126 , Y02P80/112
摘要： An embodiment holdup time circuit of a bridgeless power factor correction circuit comprises a charge device connected between an output terminal of a bridgeless power factor correction circuit and an energy storage apparatus, a discharge device connected between the energy storage apparatus and an input of the bridgeless power factor correction circuit, the energy storage apparatus and the bridgeless power factor correction circuit comprising a first boost converter, a second boost converter, a first switch and a second switch, wherein the first switch is connected between the first boost converter and ground and the second switch is connected between the second boost converter and ground.
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公开(公告)号：US09627972B2
公开(公告)日：2017-04-18
申请号：US14728590
申请日：2015-06-02
发明人： Hengchun Mao , Dianbo Fu , Bing Cai
IPC分类号： H05K7/00 , H02M3/158 , H01L21/48 , H01L23/495 , H01L23/00 , H01L25/065 , H01L25/16 , H01L25/00 , H02M3/00
CPC分类号： H02M3/158 , H01L21/4828 , H01L21/4842 , H01L23/49562 , H01L23/49575 , H01L23/49589 , H01L24/81 , H01L25/0655 , H01L25/0657 , H01L25/16 , H01L25/50 , H01L2225/06513 , H01L2225/06517 , H01L2924/1205 , H01L2924/1206 , H01L2924/1207 , H01L2924/13091 , H01L2924/14252 , H01L2924/1426 , H02M3/00 , H02M3/1588 , Y02B70/1466 , Y10T29/4913
摘要： An embodiment power converter package comprises a semiconductor die, an output inductor, a plurality of input capacitors and output capacitors. The semiconductor die, the output inductor and the plurality of capacitors are mounted on a lead frame and connected one to another through various pads on the lead frame. The semiconductor die comprises a high side switch, a low side switch and a driver. The power converter package is electrically coupled to an external pulse width modulation controller through a variety of input and output pads.
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