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公开(公告)号：US20090021962A1
公开(公告)日：2009-01-22
申请号：US12022965
申请日：2008-01-30
IPC分类号： H02M3/335
CPC分类号： H02M1/32 , H02M3/33592 , H02M3/3378 , Y02B70/1475
摘要： Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer with a first winding and a second winding. A voltage is applied to the first winding for a period that is followed by an OFF time. The voltage converter further includes an OFF time controller that is operable to adjust the OFF time based at least in part on a load current traversing the second winding.
摘要翻译： 本发明的各种实施例提供电压转换器及其使用方法。 作为一个示例，公开了一种电压转换器，其包括具有第一绕组和第二绕组的变压器。 在第一绕组上施加电压一段时间后的OFF时间。 电压转换器还包括OFF时间控制器，其可操作以至少部分地基于穿过第二绕组的负载电流来调节OFF时间。
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公开(公告)号：US08054652B2
公开(公告)日：2011-11-08
申请号：US12022965
申请日：2008-01-30
申请人： Rais K. Miftakhutdinov , Lin Sheng , John R. Wiggenhorn , Jin Liang , Steven Tumasz , Hong Huang
发明人： Rais K. Miftakhutdinov , Lin Sheng , John R. Wiggenhorn , Jin Liang , Steven Tumasz , Hong Huang
CPC分类号： H02M1/32 , H02M3/33592 , H02M3/3378 , Y02B70/1475
摘要： Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer with a first winding and a second winding. A voltage is applied to the first winding for a period that is followed by an OFF time. The voltage converter further includes an OFF time controller that is operable to adjust the OFF time based at least in part on a load current traversing the second winding.
摘要翻译： 本发明的各种实施例提供电压转换器及其使用方法。 作为一个示例，公开了一种电压转换器，其包括具有第一绕组和第二绕组的变压器。 在第一绕组上施加电压一段时间后的OFF时间。 电压转换器还包括OFF时间控制器，其可操作以至少部分地基于穿过第二绕组的负载电流来调节OFF时间。
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公开(公告)号：US20090016082A1
公开(公告)日：2009-01-15
申请号：US12022378
申请日：2008-01-30
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer, an operational detector, and a controllable oscillator. The transformer includes a first winding and a second winding, and the operational detector provides an electrical output corresponding to an operational characteristic of the transformer. The controllable oscillator provides a clock output with a frequency corresponding to the electrical output. This clock output at least in part controls application of a voltage input to the first winding.
摘要翻译： 本发明的各种实施例提供电压转换器及其使用方法。 作为一个示例，公开了一种电压转换器，其包括变压器，操作检测器和可控振荡器。 变压器包括第一绕组和第二绕组，并且操作检测器提供对应于变压器的操作特性的电输出。 可控振荡器提供具有对应于电输出的频率的时钟输出。 该时钟输出至少部分地控制对第一绕组的电压输入的应用。
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公开(公告)号：US08576596B2
公开(公告)日：2013-11-05
申请号：US13277773
申请日：2011-10-20
IPC分类号： H02M7/44
CPC分类号： H02M1/32 , H02M3/33592 , H02M3/3378 , Y02B70/1475
摘要： Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer with a first winding and a second winding. A voltage is applied to the first winding for a period that is followed by an OFF time. The voltage converter further includes an OFF time controller that is operable to adjust the OFF time based at least in part on a load current traversing the second winding.
摘要翻译： 本发明的各种实施例提供电压转换器及其使用方法。 作为一个示例，公开了一种电压转换器，其包括具有第一绕组和第二绕组的变压器。 在第一绕组上施加电压一段时间后的OFF时间。 电压转换器还包括OFF时间控制器，其可操作以至少部分地基于穿过第二绕组的负载电流来调节OFF时间。
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公开(公告)号：US20120039093A1
公开(公告)日：2012-02-16
申请号：US13277773
申请日：2011-10-20
IPC分类号： H02M3/335
CPC分类号： H02M1/32 , H02M3/33592 , H02M3/3378 , Y02B70/1475
摘要： Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer with a first winding and a second winding. A voltage is applied to the first winding for a period that is followed by an OFF time. The voltage converter further includes an OFF time controller that is operable to adjust the OFF time based at least in part on a load current traversing the second winding.
摘要翻译： 本发明的各种实施例提供电压转换器及其使用方法。 作为一个示例，公开了一种电压转换器，其包括具有第一绕组和第二绕组的变压器。 在第一绕组上施加电压一段时间后的OFF时间。 电压转换器还包括OFF时间控制器，其可操作以至少部分地基于穿过第二绕组的负载电流来调节OFF时间。
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6.发明授权Power supply controller having frequency foldback and volt-second duty cycle clamp features 失效电源控制器具有频率折返和伏秒占空比钳位功能
公开(公告)号：US5710697A
公开(公告)日：1998-01-20
申请号：US622009
申请日：1996-03-26
IPC分类号： H02M3/335
CPC分类号： H02M1/32 , H02M3/33546
摘要： A power supply controller implementing frequency foldback and volt-second duty cycle clamp features. An oscillator timing capacitor is charged with a fixed current and is discharged with a fixed current when the output voltage is above a predetermined level and with a decreasing current when the output voltage falls below the predetermined level, so as to decrease the power supply operating frequency during short circuit or overload fault conditions. A volt-second duty cycle clamp circuit limits the duty cycle to a maximum value which is independent of the tolerance of a capacitor which sets the maximum duty cycle as a function of the power supply input voltage.
摘要翻译： 实现频率折返和伏秒占空比钳位功能的电源控制器。 振荡器定时电容器以固定电流充电，并且当输出电压高于预定电平并且当输出电压下降到预定电平以下时，以固定电流放电，以便降低电源工作频率 在短路或过载故障条件下。 伏特第二占空比钳位电路将占空比限制在最大值，该最大值与电容器的公差无关，该电容器将最大占空比设置为电源输入电压的函数。
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