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    • 3. 发明公开
    • 모터 구동 장치
    • 电机驱动装置
    • KR1020140076038A
    • 2014-06-20
    • KR1020120144131
    • 2012-12-12
    • 삼성전기주식회사
    • 이수웅
    • H02H7/08G01R19/165H02P3/00
    • H02H7/0838H02P7/04H02P29/027H03K17/0812H03K2217/0027
    • The present invention relates to a motor driving device capable of reducing voltage headroom losses due to shunt resistance by detecting a current from a connection point of a PMOS transistor and an NMOS transistor of a motor driving circuit. The motor driving device comprises: a driving unit which includes a first transistor unit and a second transistor unit that are connected to each other in parallel between a driving power end and a ground, wherein the first transistor has a first PMOS transistor and a first NMOS transistor that are connected to each other in series between the driving power end and the ground, and the second transistor unit has a second PMOS transistor and a second NMOS transistor that are connected to each other in series between the driving power end and the ground, and which drives a motor according to switching operations of the first and second transistor units by connecting the motor to a connection point of the first PMOS transistor and the first NMOS transistor and a connection point of the second PMOS transistor and the second NMOS transistor; and a detection unit to detect a current from the connection point of the PMOS transistor and the NMOS transistor of at least either the first transistor unit or the second transistor unit.
    • 电动机驱动装置技术领域本发明涉及通过从PMOS晶体管和电动机驱动电路的NMOS晶体管的连接点检测电流而能够降低由于分流电阻引起的电压余量损失的电动机驱动装置。 电机驱动装置包括:驱动单元,其包括在驱动电源端和地之间并联连接的第一晶体管单元和第二晶体管单元,其中第一晶体管具有第一PMOS晶体管和第一NMOS晶体管 晶体管,它们在驱动电源端和地之间串联连接,第二晶体管单元具有串联连接在驱动电源端和地之间的第二PMOS晶体管和第二NMOS晶体管, 并且通过将所述电动机连接到所述第一PMOS晶体管和所述第一NMOS晶体管的连接点以及所述第二PMOS晶体管和所述第二NMOS晶体管的连接点,根据所述第一和第二晶体管单元的切换操作来驱动电动机; 以及检测单元,用于检测来自PMOS晶体管的连接点和至少第一晶体管单元或第二晶体管单元的NMOS晶体管的电流。
    • 7. 发明公开
    • 전류 보상 회로 및 이를 포함하는 조명 장치
    • 电流补偿电路和包含该电路的灯装置
    • KR1020160116275A
    • 2016-10-07
    • KR1020150043595
    • 2015-03-27
    • 매그나칩 반도체 유한회사
    • 홍승우
    • H05B33/08H05B37/02F21S2/00F21Y101/02
    • H02M3/156H02M1/08H02M2001/0022H03K17/145H03K2217/0027H05B33/0818
    • 전류보상회로는구동스위칭소자가턴-온되면, 상기구동스위칭소자를통과한구동전류에의하여발생된센싱전압이제1 특정전압이하로떨어진보상시간을측정하고, 상기센싱전압이제2 특정전압에도달한시점부터상기측정된보상시간만큼상기구동스위칭소자의턴-오프시점을지연하는전류보상부및 상기지연된구동스위칭소자의턴-오프시점에스위칭제어신호를제공하는스위칭제어부를포함한다. 따라서, 전류보상회로는입력전압및 출력전압의변동에관계없이평균구동전류를정밀하게제어할수 있고, 피크전류모드(Peak Current Mode) 제어방식을사용하여발광다이오드를동작할수 있다.
    • 电流补偿电路包括电流补偿器,其被配置为测量补偿时间,其中响应于所述驱动开关元件被接通并且被配置为延迟,通过驱动开关元件的驱动电流产生的感测电压下降到低于第一一定电压 所述驱动开关元件的关断点在所述测量的补偿时间期间从所述感测电压达到第二一定电压的点开始,以及开关控制器,被配置为在所述延迟驱动开关的截止点处提供开关控制信号 元件。 这种电流补偿电路不管输入电压和输出电压的变化如何,均能精确地控制平均驱动电流,并且能够使用峰值电流模式控制方法来操作发光二极管。