Power semiconductor device and method of fabricating the same

    公开(公告)号:US11164964B2

    公开(公告)日:2021-11-02

    申请号:US16171197

    申请日:2018-10-25

    发明人: Ju Hwan Lee Hyuk Woo

    摘要: Provided is a semiconductor device. The device comprises an epitaxial layer that constitutes a part of an active cell region and is doped with impurities of a first conductivity type at a first concentration; a field stop region that is located below the epitaxial layer and doped with impurities of a second conductivity type at a second concentration which are then activated; and a collector region that is located below the field stop region 70 and is doped with impurities of a second conductivity type. The field stop region is formed by repeatedly alternately arranging regions in which the activation of the impurities of the first conductivity type is relatively strong and regions in which the activation of the impurities of the first conductivity type is relatively weak.

    Method of preventing battery discharge and electronic control unit performing the same

    公开(公告)号:US11146082B2

    公开(公告)日:2021-10-12

    申请号:US16382012

    申请日:2019-04-11

    发明人: Kyoung Tae Kim

    IPC分类号: H02J7/00 G01R31/3835

    摘要: Disclosed is a method for an electronic control unit to prevent the discharge of a battery. The method includes the steps of detecting an off signal of vehicle function power connected to a battery and monitoring a voltage of the battery, detecting a low voltage of the battery based on a result of the monitoring and transmitting an operation inhibition signal for preventing power consumption of the battery to a plurality of controllers, and determining whether the plurality of controllers switch to a sleep mode in response to the operation inhibition signal.

    TIME-TO-DIGITAL CONVERTER AND CONVERTING METHODS

    公开(公告)号:US20210184684A1

    公开(公告)日:2021-06-17

    申请号:US17110010

    申请日:2020-12-02

    摘要: A time-to-digital converter and a converting method are provided. The time-to-digital converter includes: a phase locked loop unit configured to multiply an input reference clock by using a phase locked loop (PLL); a counting unit configured to count the multiplied input reference clock and record an edge position of an input signal; a delay locked loop unit configured to decompose the multiplied input reference clock into a multi-phase clock using a delay locked loop (DLL), and sense the recorded edge position of the input signal among the decomposed multi-phase clock and record a fine edge position; and a control unit configured to calculate a time difference in time of flight (ToF) between a start signal and a stop signal of the input signal by using the recorded edge position and the recorded fine edge position.

    ALARM OFFSET OPTIMIZATION APPARATUS OF AUTOSAR OPERATING SYSTEM

    公开(公告)号:US20210174606A1

    公开(公告)日:2021-06-10

    申请号:US16951744

    申请日:2020-11-18

    发明人: Jun Ho Cho

    IPC分类号: G07C5/00 G06F9/50 G07C5/08

    摘要: An apparatus of optimizing an alarm offset for an AUTomotive Open System Architecture (AUTOSAR) operating system, may include a start module configured to input an offset value of a predetermined offset table to an offset variable value for each alarm information related to an alarm setting test file; and an execution module configured to execute the alarm setting test file based on the input offset value and output an execution result for optimizing the alarm offset.

    SYSTEM AND METHOD FOR SENSING FUEL CELL OF VEHICLE

    公开(公告)号:US20210143456A1

    公开(公告)日:2021-05-13

    申请号:US17090691

    申请日:2020-11-05

    发明人: Su Hun YANG

    摘要: A system for sensing a fuel cell of a vehicle may include: an analog digital converter (ADC) configured to receive a voltage of a fuel cell stack; a calculation unit configured to calculate a total number of cells of the fuel cell stack; and a control unit configured to acquire a voltage per a unit cell of the fuel cell stack based on output values of the ADC and the calculation unit.

    AUXILIARY APPARATUS FOR CONTROLLING MODE OF DC-DC CONVERTER

    公开(公告)号:US20210135560A1

    公开(公告)日:2021-05-06

    申请号:US17085794

    申请日:2020-10-30

    IPC分类号: H02M1/08 H02M3/158 G05F3/26

    摘要: Disclosed is an auxiliary apparatus for controlling a current mode of a DC-DC converter. The auxiliary apparatus includes a current mirror coupled to a source voltage and configured to duplicate and supply a reference current supplied from a constant current source, an amplification unit configured to perform negative feedback on a loop control voltage, generated from a DC-DC converter current mode driving unit, and a reference voltage, generated based on the reference current supplied from the current mirror, and a control voltage clamping unit configured to limit a reduction in the loop control voltage based on a gate control voltage output based on a result of the comparison and amplification of the amplification unit.