公开(公告)号：US20180183451A1

公开(公告)日：2018-06-28

申请号：US15705583

申请日：2017-09-15

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Soo Woong LEE ,  Joo Yul KO ,  Woo Young CHOI

IPC: H03M1/08

CPC classification number: H03M1/0863 ,  H03M1/68

Abstract: A multiple resistor string digital-to-analog converter (DAC) includes a first resistor string circuit including first through n-th resistors, where n is a natural number; a first switching circuit connected between one terminal of each of the first through n-th resistors and a first connection node, and configured to select one terminal of a corresponding k-th resistor, where k is a natural number equal to or greater than 1 and equal to or smaller than n, of the first resistor string circuit based on a digital code; a second switching circuit connected to the other terminal of the first through n-th resistors, and configured to select the other terminal of the corresponding k-th resistor of the first resistor string circuit depending on the digital code; and a third switching circuit configured to select a voltage divided by the resistors of the second resistor string circuit depending on the digital code.

公开(公告)号：US20180074283A1

公开(公告)日：2018-03-15

申请号：US15491210

申请日：2017-04-19

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Joo Yul KO ,  Joo Hyoung LEE ,  Jong Woo LEE ,  Je Hyuk RYU ,  Woo Young CHOI ,  Soo Woong LEE ,  Byung Joo HONG

IPC: G02B7/09 ,  H02K41/035 ,  H02P7/02

CPC classification number: G02B7/09 ,  H02K41/0356 ,  H02P6/006 ,  H02P7/02 ,  H02P8/005 ,  H02P25/034 ,  H02P2203/11

Abstract: A camera module actuator includes, a magnet, a coil, a driver, and a position estimating processor. The coil is disposed to face the magnet. The driver is configured to move the magnet by applying a driving signal to the coil. The position estimating processor is configured to estimate a position of the magnet from an oscillating signal. A frequency of the oscillating signal varies according to a movement of the magnet.

公开(公告)号：US20150214929A1

公开(公告)日：2015-07-30

申请号：US14608110

申请日：2015-01-28

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Soo Woong LEE ,  Joong Ho CHOI

IPC: H03K3/012 ,  H03K17/687

CPC classification number: H03K17/687 ,  G09G3/3674 ,  G09G2310/0289 ,  H03K3/35613

Abstract: A gate driver comprises a level shifter outputting first and second signals; an output switch unit causing a first current flow in an output terminal by a voltage of the first signal in a first section of the driver to charge the output terminal, causing a second current flow by a voltage of the second signal in a second section, and discharging the output terminal depending on the second current. A current sensing unit causes a sensing current flow depending on the voltage of the second signal in the second section and outputting a preset voltage depending on the flow of the sensing current. A feedback unit causes the voltage of the second signal to attain at least a preset level in the second section depending on the preset voltage.

Abstract translation: 门驱动器包括输出第一和第二信号的电平移位器; 输出开关单元，在驱动器的第一部分中通过第一信号的电压使输出端中的第一电流流动，对输出端进行充电，在第二部分中引起第二电流的第二电流， 并根据第二电流对输出端子进行放电。 电流感测单元根据第二部分中的第二信号的电压使感测电流流动，并且根据感测电流的流量输出预设电压。 反馈单元使得第二信号的电压根据预设电压在第二部分中达到至少预设电平。

公开(公告)号：US20150188309A1

公开(公告)日：2015-07-02

申请号：US14246641

申请日：2014-04-07

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Soo Woong LEE

IPC: H02H7/085

CPC classification number: B60L3/0061 ,  B60L2240/425 ,  B60L2240/526 ,  B60L2240/529 ,  B60L2260/167 ,  Y02T10/642

Abstract: A motor drive control device may include: a motor drive unit generating a motor drive signal and providing the generated motor drive signal to a motor; a high temperature protection circuit unit controlling an operation of the motor drive unit depending on a change of temperature of the motor; a current adjustment unit connected between the motor drive unit and a ground terminal to thereby adjust a current flowing in the motor drive unit; and a control unit controlling the current adjustment unit depending on the change of temperature of the motor.

Abstract translation: 马达驱动控制装置可以包括：马达驱动单元，其产生马达驱动信号并将所产生的马达驱动信号提供给马达; 高温保护电路单元，其根据电动机的温度变化控制电动机驱动单元的动作; 电动调节单元，其连接在所述电动机驱动单元和接地端子之间，从而调节在所述电动机驱动单元中流动的电流; 以及控制单元，其根据电动机的温度变化来控制电流调节单元。

公开(公告)号：US20150061623A1

公开(公告)日：2015-03-05

申请号：US14087652

申请日：2013-11-22

Applicant: Samsung Electro-Mechanics Co., Ltd.

Inventor： Soo Woong LEE

IPC: G05F1/575

CPC classification number: G05F1/575

Abstract: There are provided a voltage regulator of a low-drop-output type, and an operation method of the same. The voltage regulator includes: an error amplifying unit providing a gate signal according to a voltage difference between a reference voltage and a feedback voltage; a semiconductor switch regulating a current between a supply voltage terminal and a ground according to the gate signal; a voltage detecting unit detecting the supply voltage to provide a detected voltage; a feedback control unit providing a feedback control signal according to the detected voltage; and a feedback voltage regulating unit connected between the semiconductor switch and the ground to regulate the feedback voltage according to the feedback control signal.

Abstract translation: 提供了低压输出型的电压调节器及其操作方法。 电压调节器包括：误差放大单元，根据参考电压和反馈电压之间的电压差提供栅极信号; 半导体开关，根据所述栅极信号调节电源电压端子与地之间的电流; 检测电源电压以提供检测电压的电压检测单元; 反馈控制单元，根据所检测的电压提供反馈控制信号; 以及连接在半导体开关和地之间的反馈电压调节单元，以根据反馈控制信号调节反馈电压。

公开(公告)号：US20140159627A1

公开(公告)日：2014-06-12

申请号：US13779353

申请日：2013-02-27

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Soo Woong LEE

IPC: H02P23/00

CPC classification number: H02P29/027 ,  H02P6/15 ,  H02P6/182

Abstract: There are provided a motor driving control apparatus and method and a motor using the same, the motor driving control apparatus including: a driving signal generating unit generating a driving control signal controlling a driving of a motor apparatus, a back-electromotive force detecting unit detecting back-electromotive force generated in the motor apparatus, and a controlling unit estimating a driving current of the motor apparatus using the back-electromotive force and adjusting a duty ratio of the driving control signal when the estimated driving current is an overcurrent.

Abstract translation: 提供了一种电动机驱动控制装置和方法以及使用该电动机驱动控制装置的电动机，所述电动机驱动控制装置包括：驱动信号生成单元，其生成控制电动机装置的驱动的驱动控制信号;反电动势检测单元 在电动机装置中产生的反电动势，以及控制单元，当估计的驱动电流为过电流时，使用反电动势估计电动机装置的驱动电流并调节驱动控制信号的占空比。

公开(公告)号：US20140159626A1

公开(公告)日：2014-06-12

申请号：US13779278

申请日：2013-02-27

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Soo Woong LEE

IPC: H02H7/08

CPC classification number: H02H7/0838 ,  H02P7/04 ,  H02P29/027 ,  H03K17/0812 ,  H03K2217/0027

Abstract: There is provided a motor driving apparatus in which a current is detected from a connection point between a PMOS transistor and an NMOS transistor of a motor driving circuit, thus reducing a voltage headroom loss due to a shunt resistor. The motor driving apparatus including: a driving unit including a first transistor unit and a second transistor unit connected in parallel between a driving power source terminal and a ground; and a motor driven according to switching of the first and second transistor units; and a detection unit detecting a current from a connection point between a PMOS transistor and an NMOS transistor of at least one of the first and second transistor units.

Abstract translation: 提供了一种电动机驱动装置，其中从电动机驱动电路的PMOS晶体管和NMOS晶体管之间的连接点检测电流，从而减小由于分流电阻器引起的电压余量损失。 该电动机驱动装置包括：驱动单元，包括并联连接在驱动电源端子和地之间的第一晶体管单元和第二晶体管单元; 以及根据第一和第二晶体管单元的开关驱动的电动机; 以及检测单元，从所述第一和第二晶体管单元中的至少一个的PMOS晶体管和NMOS晶体管之间的连接点检测电流。

公开(公告)号：US20140145656A1

公开(公告)日：2014-05-29

申请号：US13772166

申请日：2013-02-20

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Joo Yul KO ,  Soo Woong LEE

IPC: H02P6/18

CPC classification number: H02P6/182

Abstract: There are provided a circuit for detecting back-electromotive force, a motor driving control apparatus and method using the same, the motor driving control apparatus including: a comparing unit outputting back-electromotive force of a motor apparatus using a plurality of comparators connected to a plurality of phases of the motor apparatus, respectively; a controlling unit controlling the driving of the motor apparatus using the back-electromotive force; and a comparator driving unit activating at least a portion of the plurality of comparators according to a preset operation scheduling.

Abstract translation: 提供了用于检测反电动势的电路，电动机驱动控制装置及使用该电路的方法，所述电动机驱动控制装置包括：比较单元，使用多个比较器输出电动机装置的反电动势，所述比较器连接到 电动机装置的多相分别; 控制单元，其使用所述反电动势来控制所述电动机装置的驱动; 以及比较器驱动单元，其根据预设的操作调度来激活所述多个比较器的至少一部分。