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    • 3. 发明申请
    • DYNAMIC GATE DRIVE VOLTAGE ADJUSTMENT
    • 动态门驱动电压调节
    • US20080258697A1
    • 2008-10-23
    • US12105121
    • 2008-04-17
    • Dirk Gehrke
    • Dirk Gehrke
    • G05F1/565
    • H02M3/1588H02M2001/0019H02M2001/0048Y02B70/1466Y02B70/1491
    • A DC-DC buck converter comprises a high-side power FET having a current path connected in series between an input terminal and an inductor connected to an output terminal supplying an output current to a load. The converter further comprises a low-side power FET having a current path connected between a reference terminal and an interconnection node of the high-side power FET with the inductor. The converter has a pulse width modulation controller receiving a feedback signal from the output terminal and providing pulse width modulated signals, and a gate driver circuit that receives the pulse width modulated signals from the pulse width modulation controller and applies pulse width modulated drive signals to the gates of the power FETs. The gate driver circuit supplies the drive signals to the gates of the power FETs at a variable voltage level adjusted in response to at least the output current, minimizing the power dissipation of the gate driver circuit.
    • DC-DC降压转换器包括具有串联连接在输入端子和连接到向负载提供输出电流的输出端子的电感器之间的电感器的高边功率FET。 该转换器还包括具有连接在具有电感器的高侧功率FET的参考端子和互连节点之间的电流通路的低端功率FET。 该转换器具有接收来自输出端子的反馈信号并提供脉冲宽度调制信号的脉冲宽度调制控制器以及从脉冲宽度调制控制器接收脉冲宽度调制信号的栅极驱动器电路,并将脉冲宽度调制驱动信号施加到 功率FET的栅极。 栅极驱动器电路以至少响应于输出电流调节的可变电压电平将功率FET的栅极提供给功率FET的栅极,从而最小化栅极驱动器电路的功率消耗。
    • 4. 发明授权
    • Electronic device including a protection circuit for a light-emitting device
    • 电子设备包括用于发光器件的保护电路
    • US08264806B2
    • 2012-09-11
    • US12491928
    • 2009-06-25
    • Dirk Gehrke
    • Dirk Gehrke
    • H02H3/20H02H9/04
    • H05B33/089Y02B20/341
    • An electronic device is provided that includes a protection circuit for a light-emitting device. The protection circuit comprises a first node adapted to be coupled to an anode of the light-emitting device and a second node adapted to be coupled to a cathode of the light-emitting device. A voltage detection stage is coupled between the first and second nodes. The voltage detection stage is adapted to detect an overvoltage condition between the first and second nodes. Furthermore, the protection circuit comprises a thyristor coupled with its anode to the first node, its cathode to the second node to the voltage detection stage. When the overvoltage condition is detected in normal operation the thyristor is controlled to open so that the current can flow through the thyristor.
    • 提供一种电子装置,其包括用于发光装置的保护电路。 保护电路包括适于耦合到发光器件的阳极的第一节点和适于耦合到发光器件的阴极的第二节点。 电压检测级耦合在第一和第二节点之间。 电压检测级适于检测第一和第二节点之间的过电压状态。 此外,保护电路包括与其阳极耦合到第一节点的晶闸管,其阴极到第二节点到电压检测级。 当在正常工作状态下检测到过电压状态时,晶闸管被控制开启,以使电流流过晶闸管。
    • 5. 发明申请
    • Electronic device including a protection circuit for a light-emitting device
    • 电子设备包括用于发光器件的保护电路
    • US20090323238A1
    • 2009-12-31
    • US12491928
    • 2009-06-25
    • Dirk Gehrke
    • Dirk Gehrke
    • H02H9/04H01L33/00H01L29/74
    • H05B33/089Y02B20/341
    • An electronic device including a protection circuit for a light-emitting device An electronic device is provided that includes a protection circuit for a light-emitting device. The protection circuit comprises a first node adapted to be coupled to an anode of the light-emitting device and a second node adapted to be coupled to a cathode of the light-emitting device. A voltage detection stage is coupled between the first and second nodes. The voltage detection stage is adapted to detect an overvoltage condition between the first and second nodes. Furthermore, the protection circuit comprises a thyristor coupled with its anode to the first node, its cathode to the second node to the voltage detection stage. When the overvoltage condition is detected in normal operation the thyristor is controlled to open so that the current can flow through the thyristor.
    • 一种包括发光装置的保护电路的电子装置提供了一种电子装置,其包括用于发光装置的保护电路。 保护电路包括适于耦合到发光器件的阳极的第一节点和适于耦合到发光器件的阴极的第二节点。 电压检测级耦合在第一和第二节点之间。 电压检测级适于检测第一和第二节点之间的过电压状态。 此外,保护电路包括与其阳极耦合到第一节点的晶闸管,其阴极到第二节点到电压检测级。 当在正常工作状态下检测到过电压状态时,晶闸管被控制开启,以使电流流过晶闸管。
    • 6. 发明授权
    • Dynamic gate drive voltage adjustment
    • 动态门极驱动电压调节
    • US07701189B2
    • 2010-04-20
    • US12105121
    • 2008-04-17
    • Dirk Gehrke
    • Dirk Gehrke
    • G05F1/00
    • H02M3/1588H02M2001/0019H02M2001/0048Y02B70/1466Y02B70/1491
    • A DC-DC buck converter comprises a high-side power FET having a current path connected in series between an input terminal and an inductor connected to an output terminal supplying an output current to a load. The converter further comprises a low-side power FET having a current path connected between a reference terminal and an interconnection node of the high-side power FET with the inductor. The converter has a pulse width modulation controller receiving a feedback signal from the output terminal and providing pulse width modulated signals, and a gate driver circuit that receives the pulse width modulated signals from the pulse width modulation controller and applies pulse width modulated drive signals to the gates of the power FETs. The gate driver circuit supplies the drive signals to the gates of the power FETs at a variable voltage level adjusted in response to at least the output current, minimizing the power dissipation of the gate driver circuit.
    • DC-DC降压转换器包括具有串联连接在输入端子和连接到向负载提供输出电流的输出端子的电感器之间的电感器的高边功率FET。 该转换器还包括具有连接在具有电感器的高侧功率FET的参考端子和互连节点之间的电流通路的低端功率FET。 该转换器具有接收来自输出端子的反馈信号并提供脉冲宽度调制信号的脉冲宽度调制控制器以及从脉冲宽度调制控制器接收脉冲宽度调制信号的栅极驱动器电路,并将脉冲宽度调制驱动信号施加到 功率FET的栅极。 栅极驱动器电路以至少响应于输出电流调节的可变电压电平将功率FET的栅极提供给功率FET的栅极,从而最小化栅极驱动器电路的功率消耗。