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公开(公告)号：US09793810B2
公开(公告)日：2017-10-17
申请号：US14850125
申请日：2015-09-10
发明人： Dianbo Fu , Jinbo Huang , Ce Liu , Liming Ye , Heping Dai , Daoshen Chen
IPC分类号： H02M3/158
CPC分类号： H02M3/1582 , H02M2001/0058 , Y02B70/1491
摘要： A method comprises providing a buck-boost converter comprising a first high-side switch and a first low-side switch connected in series across an input capacitor, a second high-side switch and a second low-side switch connected in series across an output capacitor and an inductor coupled between a common node of the first high-side switch and the first low-side switch, and a common node of the second high-side switch and the second low-side switch, detecting a first voltage resonance waveform across a switch of the buck-boost converter and turning on the switch of the buck-boost converter when the first voltage resonance waveform falls to zero.
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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：US10284097B2
公开(公告)日：2019-05-07
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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4.发明授权Apparatus and efficiency point tracking method for high efficiency resonant converters 有权高效率谐振变换器的装置和效率点跟踪方法公开(公告)号：US09444346B2
公开(公告)日：2016-09-13
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
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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5.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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6.发明申请公开(公告)号：US20170077815A1
公开(公告)日：2017-03-16
申请号：US14850125
申请日：2015-09-10
发明人： Dianbo Fu , Jinbo Huang , Ce Liu , Liming Ye , Heping Dai , Daoshen Chen
IPC分类号： H02M3/158
CPC分类号： H02M3/1582 , H02M2001/0058 , Y02B70/1491
摘要： A method comprises providing a buck-boost converter comprising a first high-side switch and a first low-side switch connected in series across an input capacitor, a second high-side switch and a second low-side switch connected in series across an output capacitor and an inductor coupled between a common node of the first high-side switch and the first low-side switch, and a common node of the second high-side switch and the second low-side switch, detecting a first voltage resonance waveform across a switch of the buck-boost converter and turning on the switch of the buck-boost converter when the first voltage resonance waveform falls to zero.
摘要翻译： 一种方法包括提供降压 - 升压转换器，其包括跨输入电容器串联连接的第一高侧开关和第一低侧开关，第二高侧开关和第二低侧开关串联连接在输出端 电容器和耦合在第一高侧开关的公共节点和第一低侧开关之间的电感器以及第二高侧开关和第二低侧开关的公共节点，检测第一高压侧开关的第一电压共振波形 降压 - 升压转换器的开关，并且当第一电压共振波形下降到零时，导通降压 - 升压转换器的开关。
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7.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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