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1.发明授权Method for extending power supply hold-up time by controlling a transformer turn ratio 有权通过控制变压器匝数比来延长电源保持时间的方法公开(公告)号：US09455637B2
公开(公告)日：2016-09-27
申请号：US14588228
申请日：2014-12-31
申请人： Dell Products, L.P.
发明人： Tsai-Fu Hung , Hung-Hsun Tsai , Yu-Hung Lai , Kuang-Hao Chou
CPC分类号： H02M3/33507 , H02M3/285 , H02M3/33576 , H02M3/3378 , H02M5/12 , H02M2001/0058 , H02M2001/0096 , Y02B70/1491
摘要： In one embodiment a method of extending power supply hold-up time by controlling a transformer turn ratio may include an input capacitor receiving an input voltage of a transformer unit. A first control transistor may switch a first transformer winding to an on state in response to the input voltage being above a voltage threshold level. The first control transistor may switch the first transformer winding to an off state in response to the input voltage being below the voltage threshold level. A second control transistor may switch a second transformer winding to an on state in response to the input voltage being below the voltage threshold level, wherein the first transformer winding and the second transformer winding may include separate windings located on a same side of a magnetic core of the transformer unit. In an embodiment the transformer unit may include a power supply unit.
摘要翻译： 在一个实施例中，通过控制变压器匝数比来延长电源保持时间的方法可以包括接收变压器单元的输入电压的输入电容器。 响应于输入电压高于电压阈值电平，第一控制晶体管可以将第一变压器绕组切换到接通状态。 第一控制晶体管可以响应于输入电压低于电压阈值电平而将第一变压器绕组切换到断开状态。 第二控制晶体管可以响应于输入电压低于电压阈值电平而将第二变压器绕组切换到接通状态，其中第一变压器绕组和第二变压器绕组可以包括位于磁芯的同一侧上的单独绕组 的变压器单元。 在一个实施例中，变压器单元可以包括电源单元。
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公开(公告)号：US09735690B2
公开(公告)日：2017-08-15
申请号：US14879146
申请日：2015-10-09
申请人： Dell Products, L.P.
发明人： Tsai-Fu Hung , Yu-Hung Lai , Shih-Chieh Wang , Feng-Yu Wu
CPC分类号： H02M3/33546 , H02M1/14 , H02M1/42 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： Systems and methods for reducing the line frequency ripple in a resonant converter are described. In some embodiments, a power supply includes a switching network; an LLC resonant tank coupled to the switching network; a rectifier coupled to the LLC resonant tank; and a control circuit coupled to the switching network and to the rectifier, where the control circuit is configured to modify an operating frequency of the switching network to reduce a line frequency ripple at an output of the rectifier.
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公开(公告)号：US11853137B2
公开(公告)日：2023-12-26
申请号：US17575311
申请日：2022-01-13
申请人： Dell Products L.P.
发明人： Yu-Hung Lai , Po-Yun Shih
摘要： Methods and systems for thermal management of components of a data processing system that may be used to provide computer implemented services are disclosed. The disclosed thermal management method and systems may improve the likelihood of data processing systems providing desired computer implemented services by improving the likelihood that desired power is provided by power supplies. To improve the likelihood of power supplies providing desired power, the power supplies may proactively take into account the thermal environment and/or thermal states of components of the power supply.
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公开(公告)号：US12055992B2
公开(公告)日：2024-08-06
申请号：US17722525
申请日：2022-04-18
申请人： Dell Products L.P.
发明人： Yu-Hung Lai , Po-Yun Shih , Yi-Che Hsu
IPC分类号： G06F1/30
CPC分类号： G06F1/30
摘要： Methods and systems for powering components of a data processing system that may be used to provide computer implemented services are disclosed. The disclosed management method and systems may improve the likelihood of data processing systems providing desired computer implemented services by improving the likelihood that desired power is provided by power supplies. To improve the likelihood of power supplies providing desired power, the power supplies may proactively take into account the type of power being supplied to the power supplies. The power supplies may modify their operation based on the type of input power being supplied to them so that conditioned power may be provided even when changes to the power supplied to the power supplies occur.
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5.发明申请METHOD FOR EXTENDING POWER SUPPLY HOLD-UP TIME BY CONTROLLING A TRANSFORMER TURN RATIO 有权通过控制变压器转数来延长电源保持时间的方法公开(公告)号：US20160190934A1
公开(公告)日：2016-06-30
申请号：US14588228
申请日：2014-12-31
申请人： Dell Products, L.P.
发明人： Tsai-Fu Hung , Hung-Hsun Tsai , Yu-Hung Lai , Kuang-Hao Chou
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/285 , H02M3/33576 , H02M3/3378 , H02M5/12 , H02M2001/0058 , H02M2001/0096 , Y02B70/1491
摘要： In one embodiment a method of extending power supply hold-up time by controlling a transformer turn ratio may include an input capacitor receiving an input voltage of a transformer unit. A first control transistor may switch a first transformer winding to an on state in response to the input voltage being above a voltage threshold level. The first control transistor may switch the first transformer winding to an off state in response to the input voltage being below the voltage threshold level. A second control transistor may switch a second transformer winding to an on state in response to the input voltage being below the voltage threshold level, wherein the first transformer winding and the second transformer winding may include separate windings located on a same side of a magnetic core of the transformer unit. In an embodiment the transformer unit may include a power supply unit.
摘要翻译： 在一个实施例中，通过控制变压器匝数比来延长电源保持时间的方法可以包括接收变压器单元的输入电压的输入电容器。 响应于输入电压高于电压阈值电平，第一控制晶体管可以将第一变压器绕组切换到接通状态。 第一控制晶体管可以响应于输入电压低于电压阈值电平而将第一变压器绕组切换到断开状态。 第二控制晶体管可以响应于输入电压低于电压阈值电平而将第二变压器绕组切换到接通状态，其中第一变压器绕组和第二变压器绕组可以包括位于磁芯的同一侧上的单独绕组 的变压器单元。 在一个实施例中，变压器单元可以包括电源单元。
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公开(公告)号：US20170104417A1
公开(公告)日：2017-04-13
申请号：US14879146
申请日：2015-10-09
申请人： DELL PRODUCTS, L.P.
发明人： Tsai-Fu Hung , Yu-Hung Lai , Shih-Chieh Wang , Feng-Yu Wu
CPC分类号： H02M3/33546 , H02M1/14 , H02M1/42 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： Systems and methods for reducing the line frequency ripple in a resonant converter are described. In some embodiments, a power supply includes a switching network; an LLC resonant tank coupled to the switching network; a rectifier coupled to the LLC resonant tank; and a control circuit coupled to the switching network and to the rectifier, where the control circuit is configured to modify an operating frequency of the switching network to reduce a line frequency ripple at an output of the rectifier.
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