公开(公告)号：US20090174345A1

公开(公告)日：2009-07-09

申请号：US12055768

申请日：2008-03-26

申请人： Christophe Vaucourt ,  Erich Bayer ,  Paul Brohlin

发明人： Christophe Vaucourt ,  Erich Bayer ,  Paul Brohlin

IPC分类号： H05B41/36

CPC分类号： H05B33/0815 ,  G03B15/05 ,  G03B2215/05 ,  H02M3/07

摘要： A power supply circuit is proposed for supplying current to a pair of white LEDs connected in series. The circuit comprises a DC-DC power converter, with a charge pump coupled to the output of the DC-DC power converter. A super capacitor is coupled to the charge pump to be charged to a voltage on top of the converter output in a first mode of operation. The super capacitor is discharged through the pair of LEDs during a second mode of operation. A control stage is provided for switching between the first mode of operation and the second mode of operation.

摘要翻译： 提出了一种电源电路，用于向串联连接的一对白色LED提供电流。 该电路包括DC-DC电力转换器，其中电荷泵耦合到DC-DC电力转换器的输出端。 超级电容器耦合到电荷泵，以在第一操作模式下被充电到转换器输出端上的电压。 在第二操作模式期间，超级电容器通过一对LED放电。 提供控制级用于在第一操作模式和第二操作模式之间切换。

公开(公告)号：US07973487B2

公开(公告)日：2011-07-05

申请号：US12055768

申请日：2008-03-26

申请人： Christophe Vaucourt ,  Erich Bayer ,  Paul Brohlin

发明人： Christophe Vaucourt ,  Erich Bayer ,  Paul Brohlin

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  G03B15/05 ,  G03B2215/05 ,  H02M3/07

摘要： A power supply circuit is proposed for supplying current to a pair of white LEDs connected in series. The circuit comprises a DC-DC power converter, with a charge pump coupled to the output of the DC-DC power converter. A super capacitor is coupled to the charge pump to be charged to a voltage on top of the converter output in a first mode of operation. The super capacitor is discharged through the pair of LEDs during a second mode of operation. A control stage is provided for switching between the first mode of operation and the second mode of operation.

摘要翻译： 提出了一种电源电路，用于向串联连接的一对白色LED提供电流。 该电路包括DC-DC电力转换器，其中电荷泵耦合到DC-DC电力转换器的输出端。 超级电容器耦合到电荷泵，以在第一操作模式下被充电到转换器输出端上的电压。 在第二操作模式期间，超级电容器通过一对LED放电。 提供控制级用于在第一操作模式和第二操作模式之间切换。

公开(公告)号：US08390337B2

公开(公告)日：2013-03-05

申请号：US12900278

申请日：2010-10-07

申请人： Ivan Shumkov ,  Erich Bayer

发明人： Ivan Shumkov ,  Erich Bayer

IPC分类号： H03K3/00

CPC分类号： H02M1/08

摘要： An electronic device for driving a power switch coupled to receive a first supply voltage level at one side of its channel is provided. The electronic device includes a control switch coupled with a first side of a channel to receive a varying control voltage having a maximum level that is greater than a maximum voltage level of the first voltage supply and with another side of the channel to a control gate of the power switch for selectively applying the control voltage to the control gate of the power switch. The first side of the channel is coupled with the control gate of the control switch and a capacitor is provided and coupled with a first side to the control gate of the control switch and with a second side to a constant voltage supply.

摘要翻译： 提供了用于驱动耦合以在其通道的一侧接收第一电源电压电平的电源开关的电子设备。 电子设备包括与通道的第一侧耦合的控制开关，以接收具有大于第一电压源的最大电压电平的最大电平的变化的控制电压，以及通道的另一侧到控制门的控制栅极 用于选择性地将控制电压施加到电源开关的控制栅极的电源开关。 通道的第一侧与控制开关的控制栅极耦合，并且提供电容器并将第一侧耦合到控制开关的控制栅极，并将第二侧耦合到恒定电压源。

公开(公告)号：US07902805B2

公开(公告)日：2011-03-08

申请号：US11695876

申请日：2007-04-03

申请人： Neil Gibson ,  Kevin Scoones ,  Erich Bayer

发明人： Neil Gibson ,  Kevin Scoones ,  Erich Bayer

IPC分类号： G05F1/575

CPC分类号： H02M3/1563

摘要： A self-oscillating DC-DC buck converter with zero hysteresis is described. The converter comprises a comparator with a supply input, a non-inverting input to which a reference voltage is applied, an inverting input to which a feedback signal is applied, and an output to which a filter network is connected. The feedback signal is derived from the filter network and the output voltage of the converter is determined by the reference voltage. Connecting a filter network with an inductor and a capacitor to the output of the comparator and deriving the feedback signal from the filter network, results in an output of the comparator which is a DC output with a superimposed ripple. The level of the DC output is controlled by the reference voltage applied to the non-inverting input of the comparator, and the inductor current develops the ripple in the equivalent series resistance of the load circuit connected to the comparator output. The ripple can be regarded as the ramp signal in a conventional DC-DC converter. Accordingly, the output voltage is regulated to follow the reference voltage, and the proposed topology is equivalent to a DC-DC buck converter.

摘要翻译： 描述了具有零滞后的自谐振DC-DC降压转换器。 该转换器包括具有电源输入的比较器，施加参考电压的非反相输入端，施加反馈信号的反相输入端和连接有滤波器网络的输出端。 反馈信号来自滤波器网络，转换器的输出电压由参考电压决定。 将滤波器网络与电感器和电容器连接到比较器的输出端，并从滤波器网络导出反馈信号，从而产生比较器的输出，该输出是具有叠加纹波的直流输出。 直流输出的电平由施加到比较器的非反相输入的参考电压控制，电感电流产生与比较器输出相连的负载电路的等效串联电阻的纹波。 在常规DC-DC转换器中，纹波可以被看作是斜坡信号。 因此，输出电压被调节为跟随参考电压，并且所提出的拓扑等价于DC-DC降压转换器。

公开(公告)号：US07518346B2

公开(公告)日：2009-04-14

申请号：US11681672

申请日：2007-03-02

申请人： Franz Prexl ,  Erich Bayer ,  Juergen Neuhaeusler

发明人： Franz Prexl ,  Erich Bayer ,  Juergen Neuhaeusler

IPC分类号： G05F1/10 ,  G05F1/652

CPC分类号： H02M3/1582

摘要： A buck-boost DC/DC converter includes an inductor and a power stage having a set of switches selectively connecting the inductor between a voltage input, a voltage output and a reference level in accordance with buck or boost mode. The converter has a switch control providing control signals to the set of switches in the power stage. A comparator provides to the switch control a first pulse width modulation signal in buck mode and a second pulse width modulation signal in boost mode. A ramp generator provides to the comparator a first ramp signal for buck mode and a second ramp signal for boost mode. An overlap control provides a ramp shift signal to the ramp generator in response to a detection signal that indicates activity of the switches in the power stage. The ramp shift signal adjusts the first and second ramp signals relative to each other so as to minimize any gap and any overlap between the first and second ramp signals. Whenever actuation of all switches in the power stage within the same clock period is detected, the ramp signals are adjusted in a way to reduce the overlap between the ramp signals. Conversely, when no switch activity is detected in a clock period, the ramp signals are adjusted in a waye to increase the overlap between the ramp signals. As a result, when the input voltage is close to the output voltage, the converter alternatively operates in buck mode or in boost mode, avoiding a buck-boost mode.

摘要翻译： 降压 - 升压DC / DC转换器包括电感器和功率级，功率级具有一组开关，其根据降压或升压模式在电压输入，电压输出和参考电平之间选择性地连接电感器。 转换器具有开关控制，为功率级中的开关组提供控制信号。 比较器提供开关控制降压模式的第一脉宽调制信号和升压模式下的第二脉宽调制信号。 斜坡发生器向比较器提供用于降压模式的第一斜坡信号和用于升压模式的第二斜坡信号。 响应于指示功率级中的开关的活动的检测信号，重叠控制向斜坡发生器提供斜坡移位信号。 斜坡移位信号相对于彼此调整第一和第二斜坡信号，以便最小化第一和第二斜坡信号之间的任何间隙和任何重叠。 无论何时在相同时钟周期内激活功率级中的所有开关，都会以斜线信号的方式调整斜坡信号，以减少斜坡信号之间的重叠。 相反，当在时钟周期内没有检测到开关活动时，斜坡信号被调整以增加斜坡信号之间的重叠。 结果，当输入电压接近输出电压时，转换器以降压模式或升压模式交替工作，避免降压 - 升压模式。

公开(公告)号：US20080111611A1

公开(公告)日：2008-05-15

申请号：US11939439

申请日：2007-11-13

申请人： Gerhard Thiele ,  Erich Bayer

发明人： Gerhard Thiele ,  Erich Bayer

IPC分类号： H03K17/687

CPC分类号： H03K17/687 ,  H03K17/04123 ,  H03K17/063 ,  H03K2217/0036

摘要： A power switching circuit in CMOS technology has a power MOS transistor and a driver stage. The power MOS transistor is operated at a higher supply voltage in excess of its maximum allowable gate-source voltage; and the driver stage of the level shifter is operated at a lower supply voltage substantially lower than the supply voltage for the power MOS transistor. The driver stage includes a pair of driver MOS transistors coupled in series between a higher supply voltage rail and a reference potential rail, and at an interconnection node coupled to the gate of the power MOS transistor. The gates of the driver MOS transistors are AC-coupled to drive signals of mutually opposite phase; and the gates of the driver MOS transistors are each connected to the higher voltage supply rail through a respective parallel connection of a first resistor and a second resistor connected in series with a non-linear component. The resistance value of the second resistor is substantially smaller than the resistance value of the first resistor.

摘要翻译： CMOS技术中的功率开关电路具有功率MOS晶体管和驱动级。 功率MOS晶体管在比其最大允许栅极 - 源极电压更高的电源电压下工作; 并且电平移位器的驱动器级在基本上低于功率MOS晶体管的电源电压的较低电源电压下操作。 驱动器级包括串联在较高电源电压轨和参考电位轨之间的一对驱动器MOS晶体管，以及耦合到功率MOS晶体管的栅极的互连节点。 驱动器MOS晶体管的栅极被AC耦合以驱动相反相位的信号; 并且驱动器MOS晶体管的栅极通过与非线性分量串联连接的第一电阻器和第二电阻器的相应并联连接而连接到较高电压源轨。 第二电阻器的电阻值显着小于第一电阻器的电阻值。

公开(公告)号：US20080084720A1

公开(公告)日：2008-04-10

申请号：US11864332

申请日：2007-09-28

申请人： Gerhard Thiele ,  Erich Bayer

发明人： Gerhard Thiele ,  Erich Bayer

IPC分类号： H02M3/135 ,  H02M3/18

CPC分类号： H02M3/07

摘要： A DC-DC boost converter comprises a charge pump selectively operating in a voltage doubler or in a voltage tripler mode. A switching arrangement connects the charge pump to an input voltage terminal in a charge phase and to an output voltage terminal in a discharge phase. A controllable current source is connected in series with the charge pump in the discharge phase and an error amplifier has a first input connected to a reference voltage, a second input connected to the output voltage terminal and an output connected to a control input of the controllable current source. The converter further comprises a mode changeover circuit with a first comparator having a first input connected to the output of the error amplifier and a second input connected to a first threshold voltage source. A second comparator has a first input connected to the output of the error amplifier and a second input connected to a second threshold voltage source. A flip-flop has its set input connected to the output of the first comparator, its reset input connected to the output of the second comparator. The flip-flop has its output connected to the switch arrangement to switch the charge pump from doubler mode to tripler mode when the voltage at the output of the error amplifier exceeds the second threshold voltage and back to doubler mode when the output voltage at the error amplifier drops below the first threshold voltage.

摘要翻译： DC-DC升压转换器包括选择性地以倍压器或三阶模式工作的电荷泵。 开关装置将电荷泵连接到充电阶段的输入电压端子和放电阶段中的输出电压端子。 可控电流源在放电阶段与电荷泵串联连接，误差放大器具有连接到参考电压的第一输入端，连接到输出电压端子的第二输入端和连接到可控制电流源的控制输入端的输出端 当前来源。 转换器还包括模式切换电路，其中第一比较器具有连接到误差放大器的输出端的第一输入端和连接到第一阈值电压源的第二输入端。 第二比较器具有连接到误差放大器的输出端的第一输入端和连接到第二阈值电压源的第二输入端。 触发器的设置输入连接到第一比较器的输出，其复位输入连接到第二比较器的输出。 触发器的输出连接到开关装置，以便当误差放大器输出端的电压超过第二阈值电压时，将电荷泵从倍频模式切换到三倍模式，当误差输出电压达到倍频模式时 放大器低于第一阈值电压。

公开(公告)号：US20050169027A1

公开(公告)日：2005-08-04

申请号：US11042297

申请日：2005-01-24

申请人： Erich Bayer

发明人： Erich Bayer

IPC分类号： G05F3/24 ,  H03K19/0185 ,  H02M1/00

CPC分类号： H03K3/356113

摘要： An improved level shifter circuit with AC feed-forward is disclosed. The integrated circuit device includes a first circuit part biased from a lower voltage supply and a second circuit part biased from a higher voltage supply. One of the circuit parts has an RS flip-flop with two complementary signal outputs and the other one has a signal input and a first and a second switching transistor. The first and the second switching transistors each have a current channel DC coupled in series with a respective cascode-connected transistor which is connected to a respective one of the signal outputs. One of these outputs is coupled to the input through a first feed-forward AC series circuit of an inverter and a first coupling capacitor, and the other output is coupled to the input through a second feed-forward AC circuit including a second coupling capacitor.

摘要翻译： 公开了一种具有交流前馈的改进的电平移位电路。 集成电路器件包括从较低电压源偏置的第一电路部分和从较高电压源偏置的第二电路部分。 其中一个电路部分具有一个具有两个互补信号输出的RS触发器，另一个具有信号输入端和第一和第二开关晶体管。 第一和第二开关晶体管各自具有与连接到相应的一个信号输出的相应的共源共栅连接晶体管串联耦合的电流通道DC。 这些输出中的一个通过反相器和第一耦合电容器的第一前馈AC串联电路耦合到输入端，另一个输出端通过包括第二耦合电容器的第二前馈AC电路耦合到输入端。

公开(公告)号：US5548240A

公开(公告)日：1996-08-20

申请号：US397013

申请日：1995-03-01

申请人： Erich Bayer

发明人： Erich Bayer

IPC分类号： H03K17/687 ,  H03K17/16 ,  H03K3/01 ,  H03K5/12

CPC分类号： H03K17/163

摘要： A circuit arrangement for gate-controlling a MOS field-effect transistor (T.sub.o) comprises a discharge circuit (12) via which the charge stored in the gate-source capacitance (C.sub.GS) can be discharged according to a time constant, the value of which depends on the internal impedance of said discharge circuit (12). This discharge circuit (12) can be switched between two conditions determined by a relatively large and a relatively small internal impedance respectively and assumes the condition dictated by the relatively small internal impedance as soon as the gate-source voltage (U.sub.GS) has dropped below a predetermined limit.

摘要翻译： 用于栅极控制MOS场效应晶体管（To）的电路装置包括放电电路（12），通过该放电电路可以根据时间常数放电存储在栅源电容（CGS）中的电荷，其值 取决于所述放电电路（12）的内部阻抗。 该放电电路（12）可以分别由相对较大和相对较小的内部阻抗确定的两个条件之间切换，并且只要栅极 - 源极电压（UGS）降至低于 预定限度。

公开(公告)号：US20110089993A1

公开(公告)日：2011-04-21

申请号：US12900278

申请日：2010-10-07

申请人： Ivan Shumkov ,  Erich Bayer

发明人： Ivan Shumkov ,  Erich Bayer

IPC分类号： H03K17/687

CPC分类号： H02M1/08

摘要： An electronic device for driving a power switch coupled to receive a first supply voltage level at one side of its channel is provided. The electronic device includes a control switch coupled with a first side of a channel to receive a varying control voltage having a maximum level that is greater than a maximum voltage level of the first voltage supply and with another side of the channel to a control gate of the power switch for selectively applying the control voltage to the control gate of the power switch. The first side of the channel is coupled with the control gate of the control switch and a capacitor is provided and coupled with a first side to the control gate of the control switch and with a second side to a constant voltage supply.

摘要翻译： 提供了用于驱动耦合以在其通道的一侧接收第一电源电压电平的电源开关的电子设备。 电子设备包括与通道的第一侧耦合的控制开关，以接收具有大于第一电压源的最大电压电平的最大电平的变化的控制电压，以及通道的另一侧到控制门的控制栅极 用于选择性地将控制电压施加到电源开关的控制栅极的电源开关。 通道的第一侧与控制开关的控制栅极耦合，并且提供电容器并将第一侧耦合到控制开关的控制栅极，并将第二侧耦合到恒定电压源。