公开(公告)号：US09118254B2

公开(公告)日：2015-08-25

申请号：US13932943

申请日：2013-07-01

申请人： LSIS CO., LTD. ,  Seoul National University R&DB Foundation

发明人： Woo Sup Kim ,  Jae Ho Lee ,  Chun Suk Yang ,  Seoung Woon Lee ,  Bo Hyung Cho

IPC分类号： H02M7/217 ,  H02M3/335 ,  H02M3/337

CPC分类号： H02M3/33569 ,  H02M3/337

摘要： Disclosed is a DC-DC converter. The DC-DC converter includes a power input unit to which power is applied, a first module comprising a first transformer and a second transformer to output a first output power transformed according to operations of a first switch and a second switch connected with the first transformer and the second transformer by using the applied power, a second module comprising a third transformer and a fourth transformer to output a second output power transformed according to operations of a third switch and a fourth switch connected with the third transformer and the fourth transformer by using the applied power, an output unit to output a sum of the first output power and the second output power, and a controller to control an interleaving operations between the first module and the second module.

摘要翻译： 公开了一种DC-DC转换器。 所述DC-DC转换器包括施加电力的电力输入单元，包括第一变压器和第二变压器的第一模块，用于输出根据与所述第一变压器连接的第一开关和第二开关的操作变换的第一输出功率 和第二变压器，第二模块包括第三变压器和第四变压器，以输出根据与第三变压器和第四变压器连接的第三开关和第四开关的操作变换的第二输出功率，所述第三开关和第四变压器通过使用 所施加的功率，输出第一输出功率和第二输出功率之和的输出单元，以及控制器，用于控制第一模块和第二模块之间的交错操作。

公开(公告)号：US09941785B2

公开(公告)日：2018-04-10

申请号：US14981314

申请日：2015-12-28

申请人： Samsung Electronics Co., Ltd. ,  Seoul National University R&DB Foundation

发明人： Jin-Han Kim ,  Han Sol Seo ,  Bo Hyung Cho ,  Paul Jang ,  Sang Woo Kang

IPC分类号： H02M1/42 ,  H02M1/44 ,  H02M7/217 ,  H02M1/12

CPC分类号： H02M1/4225 ,  H02M1/44 ,  H02M2001/123 ,  Y02B70/126

摘要： A power factor correction circuit and an electronic product including the same are disclosed. This technology configures a bridgeless circuit with no rectifier diode by using an additional switch, eliminating conduction loss due to the diode and reducing common mode EMI noise of the power factor correction circuit. A power factor correction circuit includes at least one inductor directly connected to an AC input stage, an output capacitor to smooth the output voltage, first switching elements to control current to store magnetic energy in the inductor, and a second switching element to maintain a substantially constant voltage between a ground voltage of an AC input stage and a ground voltage of an output stage.