公开(公告)号：US20200235665A1

公开(公告)日：2020-07-23

申请号：US16744255

申请日：2020-01-16

Applicant: DENSO CORPORATION

Inventor： Mitsutaka ITO ,  Sadahiro AKAMA

IPC: H02M3/158 ,  H02M3/335 ,  B60L58/10

Abstract: A control device has a first control part and a second control part. The control device is applied to a DC-DC converter. The control device selects a first switch turning-on instruction or a first switch turning-off instruction generated by the first control part during a voltage boost control period, and transmits the selected first switch turning-on instruction or the selected first switch turning-off instruction to a first switch in the DC-DC converter. The control device selects a second switch turning-on instruction or a second switch turning-off instruction generated by the second control part during a voltage step-down control period, and transmits the selected second switch turning-on instruction or the selected second switch turning-off instruction to a second switch in the DC-DC converter.

公开(公告)号：US20190113563A1

公开(公告)日：2019-04-18

申请号：US16228889

申请日：2018-12-21

Applicant: DENSO CORPORATION

Inventor： Sadahiro AKAMA ,  Hidekazu ONO

IPC: G01R31/26 ,  G01R19/00

Abstract: A semiconductor device includes a main switching element, a sense switching element, a sense resistor and an operational amplifier. The main switching element has a first terminal and a second terminal between which a load current flows. The sense switching element is connected to the main switching element to form a current mirror, and has a third terminal and a fourth terminal between which a sense current correlated with the load current flows. The sense resistor is arranged in a feedback path of the operational amplifier. A direction of the sense current flowing through the sense resistor is switchable according to a magnitude relationship between a potential of the first terminal and a potential of the second terminal or a magnitude relationship between the potential of the first terminal and the potential of the fourth terminal.

公开(公告)号：US20130147406A1

公开(公告)日：2013-06-13

申请号：US13760175

申请日：2013-02-06

Applicant: DENSO CORPORATION

Inventor： Masahiro KURODA ,  Nobumasa UEDA ,  Kiyoshi NAGATA ,  Masaya OOTAKE ,  Sadahiro AKAMA

IPC: H02P6/20

CPC classification number: H02P6/20 ,  H02M7/53875

Abstract: A control system controls a multiphase rotating machine by a 120° energization process and a PWM process. In the 120° energization process, respective ones of switching elements of a high side arm and switching elements of a low side arm of a power conversion circuit are turned on. In the PWM process, the switching elements of the power conversion circuit turn on/off so that two phases that are connected to the switching elements that are in the on-state are alternately rendered conductive to the high potential side input terminal and the low potential side input terminal of the power conversion circuit.

Abstract translation: 控制系统通过120°通电过程和PWM过程控制多相旋转机器。 在120°通电处理中，高侧臂的开关元件和功率转换电路的低侧臂的开关元件中的各个导通。 在PWM处理中，功率转换电路的开关元件导通/截止，使得连接到处于导通状态的开关元件的两相交替地导通到高电位侧输入端子和低电位 电源转换电路的侧面输入端子。