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    • 2. 发明申请
    • SWITCHING CONVERTER CONTROL CIRCUIT
    • 切换转换器控制电路
    • US20110241633A1
    • 2011-10-06
    • US13052240
    • 2011-03-21
    • Stefan HerzerSumeet P. KulkamiJochen Neidhardt
    • Stefan HerzerSumeet P. KulkamiJochen Neidhardt
    • G05F1/565
    • H02M3/157H02M3/1588Y02B70/1466
    • A DC-DC converter has a control circuit for controlling a high-side power transistor and a low-side power transistor connected in series between supply terminals to which an input supply voltage is applied. The converter has a switching node at the interconnection of the power transistors for connection of an inductor to which a load is connected. The control circuit has a feedback loop that provides a pulse width modulated control signal, logic circuitry to which the pulse width modulated control signal is applied and gate drivers with inputs connected to outputs of the logic circuitry and outputs applying gate drive signals to the gates of the power transistors. A digital signal is obtained which is indicative of whether the converter switching node is at a potential above or below a zero reference at the time of the turn-off edge of the low-side gate drive signal. The turn-off edge of the low-side gate drive signal is advanced or delayed by a predetermined amount in response to the value of the digital signal.
    • DC-DC转换器具有控制电路,用于控制串联在施加输入电源电压的供电端子之间的高边功率晶体管和低边功率晶体管。 该转换器在功率晶体管的互连处具有开关节点,用于连接负载连接的电感器。 控制电路具有提供脉冲宽度调制控制信号的反馈回路,施加脉宽调制控制信号的逻辑电路以及连接到逻辑电路的输出的输入端的栅极驱动器,并将栅极驱动信号施加到栅极 功率晶体管。 获得数字信号,其指示在低侧栅极驱动信号的截止边沿时,转换器开关节点是否处于高于或低于零参考的电位。 响应于数字信号的值,低端栅极驱动信号的截止边沿被提前或延迟预定量。
    • 5. 发明授权
    • Switching converter control circuit
    • 开关变换器控制电路
    • US08884599B2
    • 2014-11-11
    • US13052240
    • 2011-03-21
    • Stefan HerzerSumeet P. KulkarniJochen Neidhardt
    • Stefan HerzerSumeet P. KulkarniJochen Neidhardt
    • G05F1/00H02M3/158H02M3/157
    • H02M3/157H02M3/1588Y02B70/1466
    • A DC-DC converter has a control circuit for controlling a high-side power transistor and a low-side power transistor connected in series between supply terminals to which an input supply voltage is applied. The converter has a switching node at the interconnection of the power transistors for connection of an inductor to which a load is connected. The control circuit has a feedback loop that provides a pulse width modulated control signal, logic circuitry to which the pulse width modulated control signal is applied and gate drivers with inputs connected to outputs of the logic circuitry and outputs applying gate drive signals to the gates of the power transistors. A digital signal is obtained which is indicative of whether the converter switching node is at a potential above or below a zero reference at the time of the turn-off edge of the low-side gate drive signal. The turn-off edge of the low-side gate drive signal is advanced or delayed by a predetermined amount in response to the value of the digital signal.
    • DC-DC转换器具有控制电路,用于控制串联在施加输入电源电压的供电端子之间的高边功率晶体管和低边功率晶体管。 该转换器在功率晶体管的互连处具有开关节点,用于连接负载连接的电感器。 控制电路具有提供脉冲宽度调制控制信号的反馈回路,施加脉宽调制控制信号的逻辑电路,以及连接到逻辑电路的输出的输入端的栅极驱动器,并将栅极驱动信号施加到栅极 功率晶体管。 获得数字信号,其指示在低侧栅极驱动信号的截止边沿时,转换器开关节点是否处于高于或低于零参考的电位。 响应于数字信号的值,低端栅极驱动信号的截止边沿被提前或延迟预定量。