公开(公告)号：US20140084964A1

公开(公告)日：2014-03-27

申请号：US14091473

申请日：2013-11-27

Applicant: DENSO CORPORATION

Inventor： Teppei KAWAMOTO ,  Yasutaka SENDA ,  Ryutaro MIURA

IPC: H03K3/012

CPC classification number: H03K3/012 ,  H03K17/163 ,  H03K17/166 ,  H03K17/168

Abstract: A load driver includes a switching element connected to a load, a constant current generator that generates a constant current, and a driver circuit that turns on the switching element for an on-period, which depends on a value of the constant current and is shortened with an increase in the value of the constant current. The constant current generator supplies a first constant current having a first current value to the driver circuit during the on-period, and supplies a second constant current having a second current value smaller than the first current value after the on-period has elapsed and the switching element reaches an on state.

Abstract translation: 负载驱动器包括连接到负载的开关元件，产生恒定电流的恒定电流发生器以及导通开关元件导通开关元件的驱动电路，该导通期间取决于恒定电流的值并被缩短 随着恒流电流的增加。 恒定电流发生器在导通周期期间向驱动器电路提供具有第一电流值的第一恒定电流，并且在经过接通周期之后提供具有小于第一电流值的第二电流值的第二恒定电流，并且 开关元件达到导通状态。