公开(公告)号：US20150263631A1

公开(公告)日：2015-09-17

申请号：US14499681

申请日：2014-09-29

Applicant: TDK Corporation

Inventor： Ken MATSUURA ,  Yoichi ISHIZUKA ,  Akinori HARIYA

IPC: H02M3/335

CPC classification number: H02M3/33546 ,  H02M3/33576 ,  H02M3/3376 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A current resonance DC-DC converter includes a transformer, a switching circuit connected to a primary winding and having a pair of first and second primary side switches which alternately perform ON and OFF operations, an AC-DC conversion circuit connected to a secondary winding and having a pair of first and second secondary side switches which alternately perform the ON and OFF operations and a control circuit that synchronously turns the switches ON and OFF in consideration of a dead time period. The dead time period is provided immediately before and after an ON period of the first and second primary switches. A lag time period is provided immediately before the dead time period. The control circuit turns the first and second secondary side switches ON at the lag time period and turns the first and second secondary side switches OFF at an expiration of the dead time period.

Abstract translation: 电流谐振DC-DC转换器包括变压器，连接到初级绕组的开关电路，并具有交替执行导通和截止操作的一对第一和第二初级侧开关，连接到次级绕组的AC-DC转换电路和 具有交替执行ON和OFF操作的一对第一和第二次级侧开关以及​​考虑到死区时间周期同步地使开关ON和OFF的控制电路。 在第一和第二主开关的接通时间之前和之后立即提供死区时间。 在死区时间之前提供滞后时间。 控制电路在延迟时间段使第一和第二二次侧开关接通，并且在死区时间期满时使第一和第二次级侧开关断开。