利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

354 records (took 0.02 seconds)

    Control circuit arrangement for pulse-width modulated DC/DC converters and method for controlling a pulse-width modulated converter
    4.
    发明授权
    Control circuit arrangement for pulse-width modulated DC/DC converters and method for controlling a pulse-width modulated converter 有权

    公开(公告)号：EP2521263B1

    公开(公告)日：2018-09-05

    申请号：EP11164491.0

    申请日：2011-05-02

    Applicant: ams AG

    Inventor： Colombo, Matteo ,  Fiocchi, Carlo

    IPC: H03K5/151 ,  H02M1/38

    CPC classification number: H03K5/1515 ,  H02M1/08 ,  H02M1/38 ,  H02M3/1588 ,  H03K7/08 ,  Y02B70/1466

    Abstract: The present invention relates to a control circuit arrangement for pulse-width modulated DC/DC converters. The arrangement comprises a phase generator (10) for a complementary driver (20) adapted to provide respective gate signals to a first and second driver transistor in response to a control signal (p_off_pwm). A clock control circuit (30) receives a clock signal (x_clk) and a pulse-width modulated signal and provides the control signal (p_off_pwm) in response to a signal edge of the pulse-width modulated signal and the clock signal (x_clk) applied thereto. A mode selection input terminal receives a mode selection signal to select a first mode or a second mode of operation. The phase generator is adapted in the first mode to provide each of the gate signals in response to the control signal and in response to the respective other gate signal. In the second mode of operation, it provides each gate signal in response to the control signal.

    SWITCHED MODE POWER SUPPLY
    5.
    发明公开
    SWITCHED MODE POWER SUPPLY 审中-公开

    公开(公告)号：EP3358731A1

    公开(公告)日：2018-08-08

    申请号：EP18162211.9

    申请日：2013-09-04

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Peltonen, Janne ,  Koli, Kimmo ,  Vilhonen, Sami

    IPC: H02M1/38 ,  H02M3/158

    CPC classification number: H02M3/158 ,  H02M1/38 ,  H02M3/15 ,  H02M3/1588 ,  H02M2001/0006 ,  Y02B70/1466

    Abstract: A switched mode power supply (100) comprises a reactive element (10) and a control signal generator (30) is arranged to generate a first control signal at a first output (31) of the control signal generator (30) and a second control signal at a second output (32) of the control signal generator (30). The first output (31) of the control signal generator (30) is coupled to a first input (21) of a switching stage (20) by means of a first control signal path (40) and the second output (32) of the control signal generator (30) is coupled to a second input (22) of the switching stage (20) by means of a second control signal path (50). The switching stage (20) is arranged to, responsive to the first and second control signals, alternately charge and discharge the reactive element (10) by coupling it alternately to first and second supply voltages. A delay detector (60) is arranged to generate a delay indicator signal indicative of a relative delay between the first control signal at the first input (21) of the switching stage (20) and the second control signal at the second input (22) of the switching stage (20). An adjustable delay stage (53) in one of the first and second signal paths (40, 50) is arranged to, responsive to the delay indicator signal, control an adjustable delay so that a first delay experienced by the first control signal passing from the first output (31) of the control signal generator (30) to the first input (21) of the switching stage (20) is substantially equal to a second delay experienced by the second control signal passing from the second output (32) of the control signal generator (30) to the second input (22) of the switching stage (20).

    POWER CONVERSION DEVICE
    6.
    发明公开
    POWER CONVERSION DEVICE 审中-公开

    公开(公告)号：EP3343748A1

    公开(公告)日：2018-07-04

    申请号：EP16841063.7

    申请日：2016-08-10

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： GOTO, Shusaku

    IPC: H02M7/48

    CPC classification number: H02M7/521 ,  H02M1/08 ,  H02M1/088 ,  H02M1/126 ,  H02M1/38 ,  H02M7/5387 ,  H02M2001/0006 ,  H02M2001/0038 ,  H03K17/0828 ,  H03K17/168 ,  H03K2217/0081

    Abstract: A third power supply circuit 23c subjects a reference voltage to DC-DC conversion to generate a power supply voltage common to a second driver circuit 24b for driving a second switching device S2 and a fourth driver circuit 24d for driving a fourth switching device S4. Wirings from a substrate on which the third power supply circuit 23c is provided to a substrate on which the second driver circuit 24b and the fourth driver circuit 24d are provided are used by the third power supply circuit 23c to supply the power supply voltage commonly to the second driver circuit 24b and the fourth driver circuit 24d. A first impedance device R1, a second impedance device R2, a third impedance device R3, and a fourth impedance device R4 are provided in a substrate on which the second driver circuit 24b and the fourth driver circuit 24d are provided.

    Electric-power apparatus
    9.
    发明公开
    Electric-power apparatus 有权
    电力设备

    公开(公告)号：EP2429069A3

    公开(公告)日：2017-08-09

    申请号：EP11154796.4

    申请日：2011-02-17

    Applicant: Mitsubishi Electric Corporation

    Inventor： Kimpara, Yoshihiko ,  Kifuku, Takayuki ,  Kojima, Tetsuya ,  Mori, Tatsuya

    IPC: H02M3/157 ,  H02M7/537 ,  H02M7/5387 ,  H02M3/156 ,  H02P27/06

    CPC classification number: H02M7/537 ,  H02M1/38 ,  H02M3/156 ,  H02M7/5387 ,  H02M2001/0009 ,  H02M2003/1555 ,  H02P23/16 ,  H02P2205/01 ,  H02P2207/01 ,  H02P2207/05

    Abstract: There is provided an electric-power conversion apparatus including a chopper circuit (16) ; a current sense resistor (4) that detects the output current (i0) of the chopper circuit; a differential detection circuit (6) that outputs, as a differential detection signal (vo), the electric potential difference across the current sense resistor; and a calculation means(13) that corrects the differential detection signal (vo) from the differential detection circuit by use of a control signal (D1) for the chopper circuit (16) so as to calculate the output current (10) of the chopper circuit.

    Abstract translation: 提供了一种包括斩波器电路（16）的电力转换装置; 检测斩波电路的输出电流（i0）的电流检测电阻（4） 差分检测电路（6），其输出作为差分检测信​​号（vo）的所述电流感测电阻器两端的电位差; 和计算装置（13），其利用斩波电路（16）的控制信号（D1）对来自差动检测电路的差动检测信号（vo）进行校正，以计算斩波器的输出电流（10） 电路。

    UNIT AND METHOD FOR SYNCHRONOUS RECTIFICATION CONTROL
    10.
    发明公开
    UNIT AND METHOD FOR SYNCHRONOUS RECTIFICATION CONTROL 审中-公开
    同步纠正控制的单元和方法

    公开(公告)号：EP3149851A1

    公开(公告)日：2017-04-05

    申请号：EP14736346.9

    申请日：2014-07-01

    Applicant: Huawei Technologies Co. Ltd.

    Inventor： MA, Jun ,  TSENGENES, Georgios ,  TORRICO-BASCOPE, Grover Victor

    IPC: H03K17/06 ,  H02M1/38 ,  H02M3/158 ,  H03K17/13

    CPC classification number: H03K17/06 ,  H02M1/08 ,  H02M1/38 ,  H02M3/33592 ,  H02M2001/0009 ,  H02M2001/0012 ,  H03K17/13 ,  H03K2017/307 ,  Y02B70/1475

    Abstract: A unit ant a method for synchronous rectification control unit is disclosed. The synchronous rectification control unit includes a voltage sensing circuit 25 configured to detect body diode conduction for a power switch 14, and to output a voltage pulse signal V
    DC corresponding to the body diode conduction. The synchronous rectification control unit further includes a capture unit 24 configured to determine a time duration T
    c for the voltage pulse signal V
    DC , and to store the time duration T
    c in a memory. The synchronous rectification control unit further includes a control algorithm circuit 26 configured to determine a turn-on time T
    on and a turn-off time T
    off to be used for a synchronous pulse width modulation, PWM, control signal SQ1 or a non-synchronous PWM control signal Q1 during an upcoming switching cycle, wherein the determination of the turn—on T
    on and turn—off T
    off times is based on the stored time duration T
    c . The synchronous rectification control unit further includes a PWM signal generator 32 configured to generate, by use of the determined turn-on T
    on time and turn-off T
    off time, the synchronous PWM control signal SQ1 for controlling switching of the power switch 14 when the power switch is in a synchronous side of a circuit; or the non-synchronous PWM control signal Q1 for controlling switching of the power switch 14 when the power switch is in a non-synchronous side of the circuit 100.

    Abstract translation: 公开了一种用于同步整流控制单元的方法。 同步整流控制单元包括电压感测电路25，其被配置为检测功率开关14的体二极管导通，并且输出与体二极管导通相对应的电压脉冲信号VDC。 同步整流控制单元还包括捕获单元24，其被配置为确定电压脉冲信号VDC的持续时间Tc，并将持续时间Tc存储在存储器中。 同步整流控制单元还包括控制算法电路26，控制算法电路26被配置为确定要用于同步脉宽调制PWM，控制信号SQ1或非同步PWM控制的导通时间Ton和关断时间Toff 信号Q1在即将到来的切换周期期间，其中确定导通Ton和关断Toff时间是基于所存储的持续时间Tc。 同步整流控制单元还包括PWM信号发生器32，其被配置为通过使用所确定的导通Ton时间和关断Toff时间来生成用于在功率开关14控制功率开关14切换时的同步PWM控制信号SQ1 开关处于电路的同步侧; 或当功率开关处于电路100的非同步侧时用于控制功率开关14的开关的非同步PWM控制信号Q1。

Patent Agency Ranking