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1. 发明授权

US6040987A DC-DC converter unit 失效
标题翻译： DC-DC转换器单元
公开(公告)号：US6040987A
公开(公告)日：2000-03-21
申请号：US53300
申请日：1998-04-01
申请人： Kenji Kudo , Kohji Kuwabara , Shigeharu Yamashita , Kazutoshi Fuchigami , Norikazu Katsuyama
发明人： Kenji Kudo , Kohji Kuwabara , Shigeharu Yamashita , Kazutoshi Fuchigami , Norikazu Katsuyama
IPC分类号： H02M3/28 , H02M1/16 , H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A DC--DC converter unit includes a power conversion transformer, a switching device for switching a DC voltage supplied to a primary winding of the power conversion transformer, a rectifying circuit for synchronously rectifying a AC voltage generated on a secondary winding of the power conversion transformer so that a DC voltage is obtained, and a reset circuit for resetting excitation energy which has been stored in the power conversion transformer by an on-operation of the switching device, so that the voltage which is switched has a square waveform.
摘要翻译： DC-DC转换器单元包括电力变换变压器，用于切换提供给电力变换变压器的初级绕组的直流电压的开关装置，用于同步整流在电力转换变压器的次级绕组上产生的交流电压的整流电路从而获得DC电压，以及复位电路，用于通过开关器件的接通操作来复位存储在电力变换变压器中的激励能量，使得切换的电压具有方波形。

2. 发明授权

US06169675A DC/DC converter with improved operation of plural parallel synchronous rectifiers 失效
标题翻译： DC / DC转换器，具有改进的多个并联同步整流器的运行
公开(公告)号：US06169675A
公开(公告)日：2001-01-02
申请号：US09121828
申请日：1998-07-24
申请人： Hiroshi Shimamori , Shigeharu Yamashita , Kazutoshi Fuchigami
发明人： Hiroshi Shimamori , Shigeharu Yamashita , Kazutoshi Fuchigami
IPC分类号： H02M7217
CPC分类号： H02M3/285 , H02M3/33592 , Y02B70/1475
摘要： A synchronous rectifying type DC-DC converter including an auxiliary winding, provided on a secondary side of a transformer, for supplying voltages assuming polarities opposite to each other to control terminals of a rectifying switch and of a fly wheel switch, and the rectifying switch and the fly wheel switch are so constructed as not to be turned ON/OFF by a voltage generated on a supply path of an electric current to a load from a secondary winding of the transformer. When connecting a plurality of DC-DC converters in parallel and operating these converters in parallel, an output of any one of the converters stops, and, even if outputs of the other DC-DC converters are inputted to the DC-DC converter concerned and the electric current flows into the current supply path, a voltage based on the above current is not applied to control terminals of the rectifying switch and of the fly wheel switch. The rectifying switch and the fly wheel switch are not therefore turned ON. Accordingly, a large quantity of electric current is prevented from flowing into the DC-DC converter concerned.
摘要翻译：一种同步整流型DC-DC转换器，包括：辅助绕组，设置在变压器的次级侧，用于提供假定极性彼此相反的电压以控制整流开关和飞轮开关的端子;以及整流开关和飞轮开关被构造成通过在来自变压器的次级绕组的负载的电流的电流路径上产生的电压而不被接通/断开。当并联多个DC-DC转换器并联运行这些转换器时，转换器中的任何一个的输出停止，并且即使其他DC-DC转换器的输出被输入到相关的DC-DC转换器，电流流入电流供给路径，基于上述电流的电压不施加到整流开关和飞轮开关的控制端子。因此，整流开关和飞轮开关不会被接通。因此，防止大量的电流流入有关的DC-DC转换器。

3. 发明授权

US5726869A Synchronous rectifier type DC-to-DC converter in which a saturable inductive device is connected in series with a secondary-side switching device 失效
标题翻译：同步整流型DC-DC转换器，其中可饱和电感器件与次级侧开关器件串联连接
公开(公告)号：US5726869A
公开(公告)日：1998-03-10
申请号：US724955
申请日：1996-10-02
申请人： Shigeharu Yamashita , Kazutoshi Fuchigami , Tetsuya Yamamoto , Shinichi Otsu , Hiroshi Shimamori , Sentarou Tokimi
发明人： Shigeharu Yamashita , Kazutoshi Fuchigami , Tetsuya Yamamoto , Shinichi Otsu , Hiroshi Shimamori , Sentarou Tokimi
IPC分类号： G05F1/32 , H02M3/28 , H02M3/335 , H02M7/21
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： Disclosed is a synchronous rectifier type DC-to-DC converter capable of preventing an increase in losses occurring when a rectifier synchronous rectification switch and a flywheel synchronous rectification switch, which are responsible for rectification on the side of a secondary winding of a transformer, are turned on simultaneously, and the destruction of FETs or windings due to large currents. The DC-to-DC converter comprises a transformer, a primary switching device connected in series with a primary winding of the transformer, a control circuit for controlling turning on or off of the primary switching device, a rectifier synchronous rectification switching device, and a flywheel synchronous rectification switching device, and converts a voltage of a DC power source into another voltage. The DC-to-DC converter further comprises a rectifier rise delay inductive device connected in series with the rectifier synchronous rectification switching device and a flywheel rise delay inductive device connected in series with the flywheel synchronous rectification switching device.
摘要翻译：公开了一种同步整流器型DC-DC转换器，其能够防止在负责变压器的次级绕组侧的整流的整流器同步整流开关和飞轮同步整流开关为止发生时的损耗增加同时导通，以及由于大电流而损坏FET或绕组。 DC-DC转换器包括变压器，与变压器的初级绕组串联的初级开关装置，用于控制一次开关装置的导通或关断的控制电路，整流器同步整流开关装置和飞轮同步整流开关装置，将直流电源的电压转换为另一电压。 DC-DC转换器还包括与整流同步整流开关装置串联连接的整流器上升延迟电感装置和与飞轮同步整流开关装置串联连接的飞轮上升延迟感应装置。

4. 发明授权

US06778417B2 Electric-power supplying devices switching between a synchronous rectification and a diode rectification by gradually altering a switching pulse 有权
标题翻译：电力供应装置通过逐渐改变开关脉冲在同步整流和二极管整流之间切换
公开(公告)号：US06778417B2
公开(公告)日：2004-08-17
申请号：US10109049
申请日：2002-03-29
申请人： Kazuhiko Itakura , Hiroshi Shimamori , Kazutoshi Fuchigami , Tsunehiro Ohno
发明人： Kazuhiko Itakura , Hiroshi Shimamori , Kazutoshi Fuchigami , Tsunehiro Ohno
IPC分类号： H02M744
CPC分类号： H02M1/36 , H02M3/33592 , H02M2001/008 , Y02B70/1475
摘要： This electric-power supplying device comprises switching elements, rectifying elements, and a control circuit. The switching elements are switched according to a switching pulse so as to perform a rectification. The rectifying elements are connected in parallel with the switching elements so as to perform a rectification. The control circuit alters the switching pulse gradually upon switching between the rectification performed by the switching elements and the rectification performed by the rectifying elements.
摘要翻译：该电力供给装置包括开关元件，整流元件和控制电路。根据开关脉冲切换开关元件，进行整流。整流元件与开关元件并联连接，从而进行整流。在由开关元件进行的整流和整流元件的整流之间切换时，控制电路逐渐改变切换脉冲。

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