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公开(公告)号：US09134743B2
公开(公告)日：2015-09-15
申请号：US13459817
申请日：2012-04-30
申请人： Glovanni Bisson , Marco Flaibani , Marco Piselli
发明人： Glovanni Bisson , Marco Flaibani , Marco Piselli
CPC分类号： G05F1/575
摘要： A low-dropout voltage regulator includes a power transistor configured to receive an input voltage and to provide a regulated output voltage at an output voltage node. The power transistor includes a control electrode configured to receive a driver signal. A reference circuit is configured to generate a reference voltage. A feedback network is coupled to the power transistor and is configured to provide a first feedback signal and a second feedback signal. The first feedback signal represents the output voltage and the second feedback signal represents an output voltage gradient. An error amplifier is configured to receive the reference voltage and the first feedback signal representing the output voltage. The error amplifier is configured to generate the driver signal dependent on the reference voltage and the first feedback signal. The error amplifier includes an output stage that is biased with a bias current responsive to the second feedback signal.
摘要翻译： 低压差稳压器包括被配置为接收输入电压并且在输出电压节点处提供稳定的输出电压的功率晶体管。 功率晶体管包括被配置为接收驱动器信号的控制电极。 参考电路被配置为产生参考电压。 反馈网络耦合到功率晶体管，并且被配置为提供第一反馈信号和第二反馈信号。 第一反馈信号表示输出电压，第二反馈信号表示输出电压梯度。 误差放大器被配置为接收参考电压和表示输出电压的第一反馈信号。 误差放大器被配置为根据参考电压和第一反馈信号产生驱动器信号。 误差放大器包括响应于第二反馈信号利用偏置电流偏置的输出级。
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公开(公告)号：US08497714B2
公开(公告)日：2013-07-30
申请号：US13007347
申请日：2011-01-14
IPC分类号： H03K3/00
摘要： In an embodiment, a method of driving a switch transistor includes activating the switch transistor by charging a control node of the switch transistor at a first charging rate for a first time duration. After charging the control node of the switch transistor at the first charging rate, the control node of the switch transistor is further charged at a second charging rate until the control node of the switch transistor reaches a target signal level, where the second charging rate is less than the first charging rate.
摘要翻译： 在一个实施例中，驱动开关晶体管的方法包括通过以第一时间段的第一充电速率对开关晶体管的控制节点进行充电来激活开关晶体管。 以第一充电速率对开关晶体管的控制节点充电之后，开关晶体管的控制节点进一步以第二充电速率充电，直到开关晶体管的控制节点达到目标信号电平，其中第二充电率为 小于第一次充电率。
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公开(公告)号：US07504868B2
公开(公告)日：2009-03-17
申请号：US11724610
申请日：2007-03-15
IPC分类号： H03K3/00
CPC分类号： H03K5/1536
摘要： A circuit arrangement comprising a high-side semiconductor switch with a first load terminal connected to a first supply terminal receiving an input voltage, a second load terminal connected to an output terminal providing an output signal, and a control terminal, a floating driver circuit connected to the control terminal for driving the semiconductor switch, a level shifter receiving an input signal and providing a floating input signal dependent on the input signal, a floating control logic receiving the output signal and the floating input signal and providing at least one control signal to the floating driver circuit, wherein the floating control logic comprises means for detecting an edge in the output signal and means for generating the control signal dependent on the result of the edge detection.
摘要翻译： 一种电路装置，包括高边半导体开关，其具有连接到接收输入电压的第一电源端子的第一负载端子，连接到提供输出信号的输出端子的第二负载端子和控制端子，连接到的浮动驱动器电路 用于驱动半导体开关的控制端子，电平移位器，接收输入信号并提供取决于输入信号的浮动输入信号;浮动控制逻辑，接收输出信号和浮动输入信号，并提供至少一个控制信号 浮动驱动器电路，其中浮动控制逻辑包括用于检测输出信号中的边沿的装置和用于根据边缘检测结果产生控制信号的装置。
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公开(公告)号：US20130285631A1
公开(公告)日：2013-10-31
申请号：US13459817
申请日：2012-04-30
申请人： Giovanni Bisson , Marco Flaibani , Marco Piselli
发明人： Giovanni Bisson , Marco Flaibani , Marco Piselli
IPC分类号： G05F1/10
CPC分类号： G05F1/575
摘要： A low-dropout voltage regulator includes a power transistor configured to receive an input voltage and to provide a regulated output voltage at an output voltage node. The power transistor includes a control electrode configured to receive a driver signal. A reference circuit is configured to generate a reference voltage. A feedback network is coupled to the power transistor and is configured to provide a first feedback signal and a second feedback signal. The first feedback signal represents the output voltage and the second feedback signal represents an output voltage gradient. An error amplifier is configured to receive the reference voltage and the first feedback signal representing the output voltage. The error amplifier is configured to generate the driver signal dependent on the reference voltage and the first feedback signal. The error amplifier includes an output stage that is biased with a bias current responsive to the second feedback signal.
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公开(公告)号：US20120182049A1
公开(公告)日：2012-07-19
申请号：US13007347
申请日：2011-01-14
IPC分类号： H03K3/00
摘要： In an embodiment, a method of driving a switch transistor includes activating the switch transistor by charging a control node of the switch transistor at a first charging rate for a first time duration. After charging the control node of the switch transistor at the first charging rate, the control node of the switch transistor is further charged at a second charging rate until the control node of the switch transistor reaches a target signal level, where the second charging rate is less than the first charging rate.
摘要翻译： 在一个实施例中，驱动开关晶体管的方法包括通过以第一时间段的第一充电速率对开关晶体管的控制节点进行充电来激活开关晶体管。 以第一充电速率对开关晶体管的控制节点充电之后，开关晶体管的控制节点进一步以第二充电速率充电，直到开关晶体管的控制节点达到目标信号电平，其中第二充电率为 小于第一次充电率。
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公开(公告)号：US07733153B2
公开(公告)日：2010-06-08
申请号：US12058085
申请日：2008-03-28
IPC分类号： H03L5/00
CPC分类号： H03K3/356113 , H03K19/018528
摘要： The invention relates to a level shifter comprising an input stage having a parasitic capacitance and a first input terminal for applying an input signal, a limiter stage having a second input terminal for applying a switching signal, wherein said input stage is coupled between a first supply terminal and said limiter stage, an output stage being coupled between a second supply terminal and said limiter stage and providing an output signal which is a level shifted version of said input signal, and a current source being adapted for injecting a current pulse into said parasitic capacitance dependent on variations of said switching signal over time.
摘要翻译： 本发明涉及一种电平移位器，包括具有寄生电容的输入级和用于施加输入信号的第一输入端，限制器级，具有用于施加开关信号的第二输入端，其中所述输入级耦合在第一电源 端子和所述限幅器级，输出级耦合在第二电源端子和所述限幅器级之间，并提供作为所述输入信号的电平转换版本的输出信号，以及电流源，用于将电流脉冲注入到所述寄生器 电容取决于所述开关信号随时间的变化。
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公开(公告)号：US07468622B2
公开(公告)日：2008-12-23
申请号：US11627191
申请日：2007-01-25
IPC分类号： G05F1/10
CPC分类号： H03K17/063
摘要： An integrated circuit having a bootstrap charger for using in a switching mode power supply is disclosed. In one embodiment, a capacitor is connected between a floating terminal and a bootstrap supply terminal with a voltage drop over the capacitor, a comparing device with a first input terminal receiving a fraction of the voltage drop, a second input terminal receiving a reference, and an output terminal providing a control signal, and a charge circuit configured to charge the capacitor dependent on the control signal.
摘要翻译： 公开了一种具有用于在开关模式电源中使用的自举充电器的集成电路。 在一个实施例中，电容器连接在浮动端子和自举电源端子之间，电容器上具有电压降，比较器件与第一输入端子接收电压降的一部分，第二输入端子接收参考电压，以及 提供控制信号的输出端子和被配置为根据控制信号对电容器充电的充电电路。
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公开(公告)号：US20080007317A1
公开(公告)日：2008-01-10
申请号：US11627191
申请日：2007-01-25
IPC分类号： H03K17/16
CPC分类号： H03K17/063
摘要： An integrated circuit having a bootstrap charger for using in a switching mode power supply is disclosed. In one embodiment, a capacitor is connected between a floating terminal and a bootstrap supply terminal with a voltage drop over the capacitor, a comparing device with a first input terminal receiving a fraction of the voltage drop, a second input terminal receiving a reference, and an output terminal providing a control signal, and a charge circuit configured to charge the capacitor dependent on the control signal.
摘要翻译： 公开了一种具有用于在开关模式电源中使用的自举充电器的集成电路。 在一个实施例中，电容器连接在浮动端子和自举电源端子之间，电容器上具有电压降，比较器件与第一输入端子接收电压降的一部分，第二输入端子接收参考电压，以及 提供控制信号的输出端子和被配置为根据控制信号对电容器充电的充电电路。
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公开(公告)号：US08810227B2
公开(公告)日：2014-08-19
申请号：US13007276
申请日：2011-01-14
IPC分类号： H02M3/156
CPC分类号： H02M3/156 , H02M1/36 , H02M2001/0032 , Y02B70/16
摘要： In an embodiment, a method of operating a switched-mode power supply includes producing an error signal based on a difference between a power supply output voltage and a reference voltage. A clock frequency is produced that is proportional to the error signal up to maximum frequency, and a sensed current signal is produced that is proportional to a current in switched-mode power supply. The error signal is summed with the sensed current signal to produce a first signal, and the first signal is compared to a first threshold. The method also includes producing a first edge of a drive signal at a first edge of the clock signal, and producing a second edge of the drive signal when the first signal crosses the first threshold in a first direction based on the comparing, where the second edge opposite the first edge.
摘要翻译： 在一个实施例中，操作开关模式电源的方法包括基于电源输出电压和参考电压之间的差产生误差信号。 产生与最高频率的误差信号成比例的时钟频率，并且产生与开关模式电源中的电流成正比的感测电流信号。 误差信号与感测的电流信号相加以产生第一信号，并将第一信号与第一阈值进行比较。 该方法还包括在时钟信号的第一边沿产生驱动信号的第一边沿，并且当第一信号基于比较在第一方向上跨过第一阈值时产生驱动信号的第二边缘，其中第二 边缘与第一边缘相对。
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公开(公告)号：US20120182003A1
公开(公告)日：2012-07-19
申请号：US13007276
申请日：2011-01-14
IPC分类号： G05F1/618
CPC分类号： H02M3/156 , H02M1/36 , H02M2001/0032 , Y02B70/16
摘要： In an embodiment, a method of operating a switched-mode power supply includes producing an error signal based on a difference between a power supply output voltage and a reference voltage. A clock frequency is produced that is proportional to the error signal up to maximum frequency, and a sensed current signal is produced that is proportional to a current in switched-mode power supply. The error signal is summed with the sensed current signal to produce a first signal, and the first signal is compared to a first threshold. The method also includes producing a first edge of a drive signal at a first edge of the clock signal, and producing a second edge of the drive signal when the first signal crosses the first threshold in a first direction based on the comparing, where the second edge opposite the first edge.
摘要翻译： 在一个实施例中，操作开关模式电源的方法包括基于电源输出电压和参考电压之间的差产生误差信号。 产生与最高频率的误差信号成比例的时钟频率，并且产生与开关模式电源中的电流成正比的感测电流信号。 误差信号与感测的电流信号相加以产生第一信号，并将第一信号与第一阈值进行比较。 该方法还包括在时钟信号的第一边沿产生驱动信号的第一边沿，并且当第一信号基于比较在第一方向上跨过第一阈值时产生驱动信号的第二边缘，其中第二 边缘与第一边缘相对。
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