公开(公告)号：US12184238B2

公开(公告)日：2024-12-31

申请号：US17577970

申请日：2022-01-18

Applicant: DENSO CORPORATION

Inventor： Shogo Kawahara ,  Tetsuya Makihara ,  Takeshi Morinaga

IPC: H03F1/02 ,  H03F3/16

Abstract: An amplifier circuit includes a main amplifier and an auxiliary circuit that improves a slew rate of the main amplifier. The main amplifier is composed of a one-stage CMOS amplifier, amplifies a voltage difference between two input signals, and outputs, from output terminals, an output signal corresponding to the voltage difference of the input signals. The auxiliary circuit controls an auxiliary bias current flowing through the output terminals according to the voltage difference of the input signals, and interrupts the auxiliary bias current at a predetermined timing before completion of settling. Such a scheme enables improvement of a slew rate by the auxiliary circuit and high-speed operation as well as reduction of error due to mismatch between the main amplifier and the auxiliary circuit, thereby yielding high-accuracy output signal output therefrom.

公开(公告)号：US08890565B2

公开(公告)日：2014-11-18

申请号：US13761533

申请日：2013-02-07

Applicant: DENSO CORPORATION

Inventor： Kazutaka Honda ,  Tetsuya Makihara

IPC: H03K19/0175 ,  H03K19/00 ,  H04L25/02 ,  H03K19/0185

CPC classification number: H03K19/017545 ,  H01L2224/48137 ,  H01L2924/13091 ,  H03K19/018521 ,  H01L2924/00

Abstract: A logic signal transmission circuit includes a driving circuit, an isolation section, and a latch section. The driving circuit converts an input digital signal to a differential digital signal. The isolation section blocks direct current and passes the differential digital signal. The latch section has even numbers of inverters which are connected in a loop and output a logic signal by turning ON and OFF a power supply voltage in a complementary manner. An input impedance of the latch section is set so that when a logic level of the differential digital signal changes, a transient voltage inputted through the isolation section to the latch section changes across a threshold voltage of the latch section. When the transient voltage changes across the threshold voltage, a logic level of the logic signal changes.

Abstract translation: 逻辑信号传输电路包括驱动电路，隔离部分和锁存部分。 驱动电路将输入数字信号转换为差分数字信号。 隔离部分阻止直流电流并传递差分数字信号。 闩锁部分具有偶数个反相器，其以循环方式连接并通过互补的方式接通和断开电源电压来输出逻辑信号。 锁存部分的输入阻抗被设定为当差分数字信号的逻辑电平改变时，通过隔离部分输入到锁存部分的瞬态电压在锁存部分的阈值电压上变化。 当瞬态电压在阈值电压上变化时，逻辑信号的逻辑电平发生变化。

公开(公告)号：US10274544B2

公开(公告)日：2019-04-30

申请号：US14445383

申请日：2014-07-29

Applicant: DENSO CORPORATION

Inventor： Yukihiro Tomonaga ,  Tetsuya Makihara ,  Kazutaka Honda ,  Nobuyoshi Osamura ,  Ryotaro Miura

IPC: G01R31/36

Abstract: A route switching circuit includes: a pair of normal detection routes that output voltages of a positive side connection point and a negative side connection point, which are different from each other, in multiple batteries for constituting an assembled battery; and a pair of diagnosis detection routes that output the voltages of the positive side connection point and the negative side connection point, and confirm a connection state of the normal detection routes by using the normal detection routes, which output at least one of a voltage of a positive side battery connected to a positive side from the positive side connection point and a voltage of a negative side battery connected to a negative side from the negative side connection point.

公开(公告)号：US09678166B2

公开(公告)日：2017-06-13

申请号：US14553018

申请日：2014-11-25

Applicant: DENSO CORPORATION

Inventor： Kazutaka Honda ,  Tetsuya Makihara ,  Shogo Hikosaka

IPC: G01N27/416 ,  G01R31/36 ,  G01R19/165

CPC classification number: G01R31/3658 ,  G01R19/16542

Abstract: A first part circuit and an operational amplifier form a level shift circuit, which selects either one of battery cells forming an assembled battery and extracts and holds a voltage representing an inter-terminal voltage of a selected battery cell. A second part circuit and the operational amplifier form a residual voltage generation circuit, which generates a residual voltage by amplifying a differential voltage between a conversion subject voltage and an analog voltage corresponding to a conversion result of an A/D conversion circuit and applies the residual voltage to the A/D conversion circuit as a conversion subject voltage. A switchover circuit operates the operational amplifier as either one of the level shift circuit and the residual voltage generation circuit and switches over a connection-state to apply a voltage held by the level shift circuit to the A/D conversion circuit and the residual voltage generation circuit as a conversion subject voltage.

公开(公告)号：US09465083B2

公开(公告)日：2016-10-11

申请号：US14132197

申请日：2013-12-18

Applicant: DENSO CORPORATION

Inventor： Tetsuya Makihara ,  Kazutaka Honda ,  Kazunori Nagaya

IPC: G01R31/36 ,  H02J7/00

CPC classification number: G01R31/3658 ,  B60L11/1851 ,  B60L11/1853 ,  B60L2240/547 ,  G01R31/3637 ,  H02J7/0013 ,  H02J7/0019 ,  H02J7/0021 ,  Y02T10/7005 ,  Y02T10/7055

Abstract: In a voltage detecting device, a control unit turns on first switches and fifth switches corresponding to a plurality of unit batteries of an assembled battery to charge electric charge to first capacitors. The control unit simultaneously turns off at least one of the first switches or the fifth switches to hold the electric charge in the first capacitors. While selecting one of the unit batteries in a predetermined order as a target unit battery for voltage detection, the control unit temporarily turns off a fourth switch to reset electric charge of a second capacitor, and then turns of second switches and third switches in a state where one of the first switches and one of the fifth switches corresponding to the target unit battery are kept in an off state, thereby to detect a voltage of the target unit battery.

Abstract translation: 在电压检测装置中，控制单元接通与组电池的多个单位电池相对应的第一开关和第五开关，以向第一电容器充电电荷。 控制单元同时关闭第一开关或第五开关中的至少一个以将电荷保持在第一电容器中。 当以预定顺序选择单元电池之一作为用于电压检测的目标单元电池时，控制单元暂时关闭第四开关以复位第二电容器的电荷，然后在第二开关和第三开关处于一状态 其中第一开关中的一个和对应于目标单元电池的第五开关中的一个保持在关闭状态，从而检测目标单元电池的电压。