公开(公告)号：US08970199B2

公开(公告)日：2015-03-03

申请号：US12792919

申请日：2010-06-03

申请人： Kevin Scoones ,  Gerhard Thiele ,  Neil Gibson

发明人： Kevin Scoones ,  Gerhard Thiele ,  Neil Gibson

IPC分类号： H02M3/157 ,  H02M1/32 ,  H02M3/158 ,  H02M1/00

CPC分类号： H02M3/157 ,  H02M1/32 ,  H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466

摘要： The invention relates to an electronic device and a method for DC-DC conversion using a comparator for generating an output signal for driving a power switch of a switch mode DC-DC converter. The electronic device is configured to reduce a bias current of the comparator with a first slope in response to a decreasing load and to increase the bias current of the comparator with a second slope in response to an increasing load, wherein the second slope is steeper than the first slope.

摘要翻译： 本发明涉及使用比较器产生用于驱动开关模式DC-DC转换器的电源开关的输出信号的DC-DC转换的电子装置和方法。 电子设备被配置为响应于负载的减小而以比第一斜率减小比较器的偏置电流，并且响应于增加的负载而以比第二斜率增加比较器的偏置电流，其中第二斜率比 第一个斜坡

公开(公告)号：US5977815A

公开(公告)日：1999-11-02

申请号：US66305

申请日：1998-04-27

申请人： Kevin Scoones ,  Guenter Heinecke ,  Erich Bayer

发明人： Kevin Scoones ,  Guenter Heinecke ,  Erich Bayer

IPC分类号： H01L27/088 ,  H01L21/8234 ,  H01L27/092 ,  H03K17/08 ,  H03K17/695 ,  G05F1/10

CPC分类号： H01L27/0921

摘要： A CMOS circuit (10), which is integrated in a semiconductor substrate, comprises a principal circuit part (12), which includes the major part of the circuit components in a well isolated from the substrate by a substrate diode. The CMOS circuit furthermore comprises a power output stage (16) driving an inductive load (26, 28). A sensor (18) is connected with one output (22, 24) of the power output stage (16) and on detection of a voltage biasing the substrate diode (30, 32) in the conducting direction produces a switching signal at the output. On occurrence of the switching signal produced by the sensor (18) a controllable switch (20) disconnects the supply voltage from the principal circuit part (12). In its own separate well (46) a status memory (14) is formed on the substrate adjacent to the principal circuit part (12), such status memory (14) comprising memory elements for storage of status data of the principal circuit part (12) on disconnection of the supply voltage.

摘要翻译： PCT No.PCT / EP96 / 04686 Sec。 371日期：1998年4月27日 102（e）1998年4月27日PCT PCT 1996年10月28日PCT公布。 第WO97 / 15952号公报 日期1997年5月1日集成在半导体衬底中的CMOS电路（10）包括主电路部分（12），其包括通过衬底二极管与衬底隔离的电路部件的主要部分。 CMOS电路还包括驱动感性负载（26,28）的功率输出级（16）。 传感器（18）与功率输出级（16）的一个输出（22,24）连接，并且在导通方向上检测到偏压衬底二极管（30,32）的电压在输出端产生开关信号。 在由传感器（18）产生的开关信号的发生中，可控开关（20）断开与主电路部分（12）的电源电压。 在其独立的井（46）中，在与主电路部分（12）相邻的衬底上形成状态存储器（14），该状态存储器（14）包括用于存储主电路部分（12）的状态数据的存储元件 ）断开电源电压。

公开(公告)号：US08148963B2

公开(公告)日：2012-04-03

申请号：US12190730

申请日：2008-08-13

申请人： Neil Gibson ,  Kevin Scoones

发明人： Neil Gibson ,  Kevin Scoones

IPC分类号： G05F1/00

CPC分类号： H02M3/1563

摘要： A converter has a main feedback path and two auxiliary feedback paths from an output node to an auxiliary differential input pair of a comparator. The auxiliary feedback paths have different RC time constants so that a differential ramp signal is effectively applied to the auxiliary differential inputs of the comparator. The circuit design compensates for a negligibly small equivalent series resistor of an output capacitor so that modern capacitors may be used without compromising the stable oscillation of the converter.

摘要翻译： A转换器具有从输出节点到比较器的辅助差分输入对的主反馈路径和两个辅助反馈路径。 辅助反馈路径具有不同的RC时间常数，使得差分斜坡信号有效地施加到比较器的辅助差分输入。 电路设计补偿了输出电容器的可忽略的小的等效串联电阻器，从而可以使用现代电容器，而不会影响转换器的稳定振荡。

公开(公告)号：US07276888B2

公开(公告)日：2007-10-02

申请号：US11053318

申请日：2005-02-07

申请人： Gerhard Thiele ,  Kevin Scoones ,  Thomas Keller ,  Franz Prexl

发明人： Gerhard Thiele ,  Kevin Scoones ,  Thomas Keller ,  Franz Prexl

IPC分类号： G05F1/00

CPC分类号： H02M1/36 ,  H03K17/0822 ,  H03K2017/0806

摘要： An integrated circuit including a precharge circuit for a DC/DC boost converter which includes a reference current circuit with a MOSFET transistor (MP4) that has a gate connected with the gate of the DC/DC boost converter's power MOSFET transistor (MP5) to form a current mirror. The precharge circuit works to approach the output voltage to the supply voltage prior to the converter startup. An included regulation circuit adjusts the gate potential at the power MOSFET transistor (MP5) and at the MOSFET transistor (MP4) in the reference circuit in response to a reduction of the drain-source voltage of the power MOSFET transistor (MP5) due to precharging load capacitance, in a sense to keep the precharge current through the power MOSFET transistor (MP5) constant.

摘要翻译： 一种包括用于DC / DC升压转换器的预充电电路的集成电路，其包括具有与DC / DC升压转换器的功率MOSFET晶体管（MP 5）的栅极连接的栅极的MOSFET晶体管（MP4）的参考电流电路， 形成电流镜。 在转换器启动之前，预充电电路用于接近输出电压至电源电压。 包括的调节电路响应于功率MOSFET晶体管（MP 5）的漏极 - 源极电压的降低来调整参考电路中的功率MOSFET晶体管（MP 5）和MOSFET晶体管（MP 4）处的栅极电位， 由于预充电负载电容，在某种意义上保持通过功率MOSFET晶体管（MP 5）的预充电电流恒定。

公开(公告)号：US20070085523A1

公开(公告)日：2007-04-19

申请号：US11278982

申请日：2006-04-07

申请人： Kevin Scoones ,  Joerg Kirchner

发明人： Kevin Scoones ,  Joerg Kirchner

IPC分类号： G05F3/20

CPC分类号： H02M3/158

摘要： A DC-DC converter with an inductor connected in series with a power transistor between first and second terminals of a DC supply source, and with a modulator circuit that has a control output connected to a control gate of the power transistor. The modulator circuit provides a periodic pulse signal the duty cycle of which determines an output voltage at an output terminal of the converter. The modulator circuit comprises an oscillator that determines the frequency of the periodic pulse signal. The modulator circuit also comprises a feedforward structure that determines an approximated duty cycle for the pulse signal based on the value of the input voltage, the sensed output voltage and the amount of current flow in the inductor. An error amplifier in the modulator has a first input connected to a reference voltage source, a second input connected to the output terminal of the converter and an output that supplies a corrective signal used by the modulator to adjust the duty cycle of the pulse signal. Thus, a multiple path feedforward topology is proposed which delivers to the modulator information on input voltage, output voltage and switch current. The feedforward concept is complemented by a low gain error amplifier which compares the output voltage to the reference voltage, which is preferably internal.

摘要翻译： 一种DC-DC转换器，其具有与直流电源的第一和第二端子之间的功率晶体管串联的电感器，以及具有连接到功率晶体管的控制栅极的控制输出的调制器电路。 调制器电路提供周期性脉冲信号，其占空比决定了转换器输出端的输出电压。 调制器电路包括确定周期性脉冲信号的频率的振荡器。 调制器电路还包括前馈结构，其基于输入电压的值，感测的输出电压和电感器中的电流量来确定脉冲信号的近似占空比。 调制器中的误差放大器具有连接到参考电压源的第一输入端，连接到转换器的输出端的第二输入端和提供由调制器使用的校正信号以调整脉冲信号占空比的输出端。 因此，提出了一种多路径前馈拓扑，其提供关于输入电压，输出电压和开关电流的调制器信息。 前馈概念由低增益误差放大器补充，该增益误差放大器将输出电压与参考电压进行比较，优选内部。

公开(公告)号：US07183823B2

公开(公告)日：2007-02-27

申请号：US11080882

申请日：2005-03-15

申请人： Neil Gibson ,  Kevin Scoones

发明人： Neil Gibson ,  Kevin Scoones

IPC分类号： H03K5/12

CPC分类号： H03K7/08 ,  H03F3/217 ,  H03K5/06

摘要： In the proposed method of generating a pulsed output signal from a periodic ramp signal and a reference voltage, the linear range of duty cycles of the pulsed output signal is significantly extended to minimum values. The ramp signal and the reference voltage are applied to inputs of a comparator and the output signal is taken from an output of the comparator. The ramp signal has a ramp that extends between a minimum voltage level and a maximum voltage level. The duty cycle of the pulse signal is controlled by varying the reference voltage between the minimum and maximum voltage levels. The ramp has an initial start section extending from the minimum voltage level and a main section extending between the initial section and the maximum voltage level. The ramp slope has a constant value over the main ramp section and a value greater than the constant value over the initial section. In the initial section of the ramp the slope is varied in a manner to compensate for non-linearity of the comparator in an operating range where the reference voltage is close to the minimum voltage level of the ramp signal. It is also preferred to insert a short blanking period before the actual ramp of the waveform. The method can be used in switched mode power converters and in class-d amplifiers.

摘要翻译： 在从周期性斜坡信号和参考电压产生脉冲输出信号的所提出的方法中，脉冲输出信号的占空比的线性范围显着地扩展到最小值。 斜坡信号和参考电压被施加到比较器的输入，并且输出信号取自比较器的输出。 斜坡信号具有在最小电压电平和最大电压电平之间延伸的斜坡。 通过改变最小和最大电压电平之间的参考电压来控制脉冲信号的占空比。 斜坡具有从最小电压电平延伸的初始起始部分和在初始部分和最大电压电平之间延伸的主部分。 斜坡斜率在主斜坡段上具有恒定值，并且大于初始段上的常数值。 在斜坡的初始部分中，斜率以在参考电压接近斜坡信号的最小电压电平的操作范围内补偿比较器的非线性的方式变化。 还需要在波形的实际斜坡之前插入短的消隐期。 该方法可用于开关电源转换器和D类放大器。

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：US20100308784A1

公开(公告)日：2010-12-09

申请号：US12792919

申请日：2010-06-03

申请人： Kevin Scoones ,  Gerhard Thiele ,  Neil Gibson

发明人： Kevin Scoones ,  Gerhard Thiele ,  Neil Gibson

IPC分类号： G05F1/10

CPC分类号： H02M3/157 ,  H02M1/32 ,  H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466

摘要： The invention relates to an electronic device and a method for DC-DC conversion using a comparator for generating an output signal for driving a power switch of a switch mode DC-DC converter. The electronic device is configured to reduce a bias current of the comparator with a first slope in response to a decreasing load and to increase the bias current of the comparator with a second slope in response to an increasing load, wherein the second slope is steeper than the first slope.

摘要翻译： 本发明涉及使用比较器产生用于驱动开关模式DC-DC转换器的电源开关的输出信号的DC-DC转换的电子装置和方法。 电子设备被配置为响应于负载的减小而以比第一斜率减小比较器的偏置电流，并且响应于增加的负载而以比第二斜率增加比较器的偏置电流，其中第二斜率比 第一个斜坡

公开(公告)号：US07595616B2

公开(公告)日：2009-09-29

申请号：US11132899

申请日：2005-05-19

申请人： Franz Prexl ,  Kevin Scoones ,  Stefan Reithmaier

发明人： Franz Prexl ,  Kevin Scoones ,  Stefan Reithmaier

IPC分类号： G05F1/00

CPC分类号： H02M3/1588 ,  H02M1/32 ,  H02M1/36 ,  Y02B70/1466

摘要： A control circuit for a polarity inverting buck-boost DC-DC converter, includes an operational trans-conductance amplifier that has inputs to which a sensed voltage difference signal is applied and an output connected to an input of a voltage-to-duty-cycle converter. A compensation capacitance is connected between the output of the amplifier and a fixed supply terminal. The compensation capacitance includes a first capacitor that is permanently connected between the output of the amplifier and the fixed supply terminal and a second capacitor that has a switched connection between the output of the amplifier and the fixed supply terminal. The first capacitor has a small capacitance compared to the second capacitor. The switched connection of the second capacitor is controlled by a continuous-discontinuous mode detection circuit.

摘要翻译： 用于极性反转降压 - 升压DC-DC转换器的控制电路包括具有输入的操作跨导放大器，感测的电压差信号被施加到输入端，并且输出端连接到电压 - 占空比的输入 转换器。 补偿电容连接在放大器的输出端和固定电源端子之间。 补偿电容包括永久连接在放大器的输出端和固定电源端子之间的第一电容器和在放大器的输出端与固定电源端子之间具有开关连接的第二电容器。 与第二电容器相比，第一电容器具有小的电容。 第二电容器的开关连接由连续不连续模式检测电路控制。

公开(公告)号：US07259603B2

公开(公告)日：2007-08-21

申请号：US11080327

申请日：2005-03-15

申请人： Neil Gibson ,  Joerg Kirchner ,  Kevin Scoones

发明人： Neil Gibson ,  Joerg Kirchner ,  Kevin Scoones

IPC分类号： H03K5/12

CPC分类号： H02M3/156 ,  H02M2001/0025

摘要： A switch mode power converter is provided which includes a switching cell with a supply input, an output and a control input. A summing comparator has first and second differential input pairs and an output. The output is connected to the control input of the switching cell. An oscillator provides a periodic waveform that is applied to a first one of the inputs of the first differential input pair of the summing comparator. An adjustable reference voltage source provides an adjustable reference voltage a predetermined fraction of which is applied to a second one of the inputs of the first differential input pair of the summing comparator. An error amplifier has differential outputs coupled to the second pair of differential inputs of the summing comparator and a differential input pair. A first input of the differential input pair is coupled to the output of the switching cell, and the adjustable reference voltage from the adjustable reference voltage source is applied to a second input of the differential input pair. Thus, the desired DC voltage is scaled to produce a DC reference for the comparator which generates the desired duty cycle for the pulse signal that drives the switching cell, and thus the desired regulated output voltage, with only minor corrections required across the error terminals to correct small parasitic terms.

摘要翻译： 提供一种开关模式功率转换器，其包括具有电源输入，输出和控制输入的开关单元。 求和比较器具有第一和第二差分输入对和输出。 输出连接到开关单元的控制输入。 振荡器提供施加到求和比较器的第一差分输入对的第一输入端的周期性波形。 可调参考电压源提供可调参考电压，其预定分数被施加到求和比较器的第一差分输入对的第二输入端。 误差放大器具有耦合到求和比较器和差分输入对的第二对差分输入的差分输出。 差分输入对的第一输入耦合到开关单元的输出，并且来自可调参考电压源的可调参考电压被施加到差分输入对的第二输入。 因此，所需的直流电压被缩放以产生用于比较器的直流基准，该比较器为驱动开关电池的脉冲信号产生期望的占空比，并因此产生期望的调节输出电压，只需要跨越误差端子至少需要更正 纠正小寄生条件。