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公开(公告)号：EP2827484A4
公开(公告)日：2015-03-18
申请号：EP13761993
申请日：2013-01-24
CPC分类号： H02M3/33507 , H01F3/14 , H01F27/24 , H02M3/1584 , H02M2001/0064
摘要： A DC-DC converter includes a coupling transformer that has windings 11 and 12, switches (Tr1, Tr2) that are connected through the windings to both ends of a DC power source Vi, a series circuit that is connected to both ends of each of the switches and includes a diode and a smoothing capacitor, and a controller 100 that alternately turns on the switches Tr1 and Tr2 and simultaneously turns on the switches Tr1 and Tr2 for a predetermined overlapping period on every half cycle. The coupling transformer 1 includes an I-shaped core 4, two E-shaped cores 2 and 3 holding the I-shaped core 4 between them, and a gap 5 formed between each of center legs 2a and 3a of the E-shaped cores 2 and 3 and the I-shaped core 4. The windings 11 and 12 are wound around the I-shaped core 4.
摘要翻译： DC-DC转换器包括具有绕组11和12的耦合变压器，通过绕组连接到直流电源Vi两端的开关（Tr1，Tr2），连接到每个的两端的串联电路 开关并包括二极管和平滑电容器，以及控制器100，其交替地接通开关Tr1和Tr2，并且在每半个周期同时使开关Tr1和Tr2导通预定的重叠周期。 耦合变压器1包括I形磁芯4，在其间保持I形磁心4的两个E形磁芯2和3以及形成在E形磁芯2的每个中心支腿2a和3a之间的间隙5 绕组11和12缠绕在I形芯4上。
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公开(公告)号：EP2309631A4
公开(公告)日：2018-01-17
申请号：EP09770039
申请日：2009-06-15
发明人： ASUKE HIDEKI , TAKANO HIDEHARU , TSURUYA MAMORU , YAMAMOTO MASAYOSHI , KAWASHIMA TAKAHIRO , FUNABIKI SHIGEYUKI
IPC分类号： H02M3/155
CPC分类号： H02M3/1584 , H02M1/34 , H02M2001/348
摘要： In order to achieve an object to reduce a surge voltage and suppress noise generation, the present invention provides a DC-DC converter with a snubber circuit, which boosts a voltage Vi of a DC power supply. The snubber circuit includes: a series circuit connected to both ends of a smoothing capacitor Co and including a snubber capacitor Cs and a snubber resistor Rs; a snubber diode Ds1 connected to a node at which the snubber capacitor Cs and the snubber resistor Rs are connected, and to a node at which a reactor Lr1 and an additional winding 1b of a transformer T1 are connected; and a snubber diode Ds2 connected to the node at which the snubber capacitor Cs and the snubber resistor Rs are connected, and to a node at which a reactor Lr2 and an additional winding 2b of a transformer T2 are connected.
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