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公开(公告)号：US06278263B1
公开(公告)日：2001-08-21
申请号：US09591404
申请日：2000-06-12
IPC分类号： G05F140
CPC分类号： G06F1/28 , H02M3/1584
摘要： A multi-phase DC/DC converter having an output voltage and including a plurality of converter channels. Each converter channel includes a converter channel input and a converter channel output. Each converter channel is configured for generating a converter channel current and for adjusting said converter channel current in response to a control signal electrically connected to each converter channel input. A control circuit generates an error signal representative of a comparison of the converter output voltage to a reference voltage. The control circuit includes a plurality of control circuit channels, each of which correspond to a converter channel. Each control circuit channel generates a channel current signal representative of a corresponding converter channel current, and generates a differential channel current signal representative of a comparison of the channel current signal to an average current signal. The average current signal is representative of an overall average current for the converter channels. Each control circuit channel generates a differential error signal representative of a comparison of the error signal to the differential channel current signal. Each control circuit channel includes a pulse width modulator having a ramp input and a control input. The control input is electrically connected to the differential error signal. The pulse width modulator generates the control signal based upon the differential error signal. The control signal is electrically coupled to a corresponding converter channel input. The control circuit generates the average current signal.
摘要翻译： 一种具有输出电压并包括多个转换器通道的多相DC / DC转换器。 每个转换器通道包括转换器通道输入和转换器通道输出。 每个转换器通道被配置为响应于电连接到每个转换器通道输入的控制信号而产生转换器通道电流并用于调整所述转换器通道电流。 控制电路产生代表转换器输出电压与参考电压的比较的误差信号。 控制电路包括多个控制电路通道，每个控制电路通道对应于转换器通道。 每个控制电路通道产生表示对应的转换器通道电流的通道电流信号，并且产生代表通道电流信号与平均电流信号的比较的差分通道电流信号。 平均电流信号代表转换器通道的总平均电流。 每个控制电路通道产生代表误差信号与差分通道电流信号的比较的差分误差信号。 每个控制电路通道包括具有斜坡输入和控制输入的脉宽调制器。 控制输入与差分误差信号电连接。 脉冲宽度调制器根据差分误差信号产生控制信号。 控制信号电耦合到相应的转换器通道输入端。 控制电路产生平均电流信号。
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公开(公告)号：USRE42897E1
公开(公告)日：2011-11-08
申请号：US11294700
申请日：2005-12-05
IPC分类号： G05F1/56
CPC分类号： H02M3/156 , H02M2001/0019
摘要： A DC/DC converter has an output voltage and sources an output current to a load. The DC/DC converter includes an error amplifier with a reference input and a summing input. The reference input is electrically connected to a reference voltage. The summing input is electrically connected to the output voltage and the output current. The summing input is configured for adding together the output voltage and the output current. The error amplifier issues an error signal and adjusts the error signal dependent at least in part upon the output voltage and the output current. A comparator receives the error signal. The comparator has a ramp input electrically connected to a voltage ramp signal. The comparator issues an output signal that is based at least in part upon said error input. A power switch has an on condition and an off condition, and supplies dc current to the load when in the on condition. The power switch has a control input electrically connected to the comparator output signal. The power switch is responsive to the control input to change between the on condition and the off condition to thereby adjust the output current of the DC/DC converter.
摘要翻译： DC / DC转换器具有输出电压并向负载提供输出电流。 DC / DC转换器包括具有参考输入和求和输入的误差放大器。 参考输入电连接到参考电压。 求和输入与输出电压和输出电流电连接。 相加输入被配置为将输出电压和输出电流相加。 误差放大器发出误差信号，并至少部分地根据输出电压和输出电流来调整误差信号。 比较器接收错误信号。 比较器具有电连接到电压斜坡信号的斜坡输入。 比较器至少部分地基于所述误差输入发出输出信号。 电源开关处于导通状态和关闭状态，并在接通状态下向负载提供直流电流。 电源开关具有电连接到比较器输出信号的控制输入。 电源开关响应于控制输入以在接通状态和关闭状态之间改变，从而调节DC / DC转换器的输出电流。
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13.再颁专利公开(公告)号：USRE42532E1
公开(公告)日：2011-07-12
申请号：US11337925
申请日：2006-01-23
CPC分类号： H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A DC to DC buck pulse width modulator converter circuit includes an input, a high side output and a low side output. A high side switch is electrically connected between a common output node and a voltage supply, and controls a flow of current therethrough dependent upon the high side output. A low side switch is electrically connected between the common output node and ground, and controls a flow of current therethrough dependent upon the low side output. A virtual ground amplifier includes a second input electrically connected to ground. A current feedback resistor is electrically connected intermediate the common output node and a first input of the virtual ground amplifier. A variable impedance component is electrically connected to an output of the virtual ground amplifier and to the first input of the virtual ground amplifier. The impedance of the variable impedance component is varied dependent upon the output of the virtual ground amplifier. A sample and hold circuit is electrically connected intermediate the input of the pulse width modulator converter circuit and the variable impedance component. The sample and hold circuit sources a virtual ground current through the variable impedance component, and samples the virtual ground current.
摘要翻译： DC至DC降压脉宽调制器转换器电路包括输入端，高端输出端和低端输出端。 高侧开关电连接在公共输出节点和电压源之间，并根据高侧输出控制电流流过。 低侧开关电连接在公共输出节点和地之间，并根据低端输出控制电流流过。 虚拟地面放大器包括电连接到地的第二输入端。 电流反馈电阻器电连接在公共输出节点和虚拟接地放大器的第一输入端之间。 可变阻抗分量电连接到虚拟接地放大器的输出端和虚拟接地放大器的第一输入端。 可变阻抗分量的阻抗取决于虚拟接地放大器的输出而变化。 采样和保持电路电连接在脉宽调制器转换器电路的输入端和可变阻抗部件之间。 采样和保持电路通过可变阻抗分量产生虚拟接地电流，并对虚拟接地电流进行采样。
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公开(公告)号：USRE38906E1
公开(公告)日：2005-12-06
申请号：US10045169
申请日：2002-01-11
CPC分类号： H02M3/156 , H02M2001/0019
摘要： A DC/DC converter has an output voltage and sources an output current to a load. The DC/DC converter includes an error amplifier with a reference input and a summing input. The reference input is electrically connected to a reference voltage. The summing input is electrically connected to the output voltage and the output current. The summing input is configured for adding together the output voltage and the output current. The error amplifier issues an error signal and adjusts the error signal dependent at least in part upon the output voltage and the output current. A comparator receives the error signal. The comparator has a ramp input electrically connected to a voltage ramp signal. The comparator issues an output signal that is based at least in part upon said error input. A power switch has an on condition and an off condition, and supplies dc current to the load when in the on condition. The power switch has a control input electrically connected to the comparator output signal. The power switch is responsive to the control input to change between the on condition and the off condition to thereby adjust the output current of the DC/DC converter.
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15.发明授权Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators 有权用于多相稳压器在轻负载条件下平滑相位降低的脉冲加法方案公开(公告)号：US08085017B2
公开(公告)日：2011-12-27
申请号：US12873102
申请日：2010-08-31
申请人： Weihong Qiu , Robert H. Isham , Chun Cheung
发明人： Weihong Qiu , Robert H. Isham , Chun Cheung
IPC分类号： G05F1/595
CPC分类号： H02M3/1584 , H02M2001/0032 , H02M2001/0041 , H02M2003/1586 , Y02B70/16
摘要： A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions.
摘要翻译： 一种用于多相调节器的脉冲控制系统，包括误差放大器，多相发生器和自适应控制器。 误差放大器提供指示输出电压误差的误差信号。 多相发生器根据误差信号产生相位调制脉冲。 自适应控制器响应于负载指示信号并将至少一个调制脉冲从第一相重定向到第二相。 可以从指示低功率模式的微处理器接收负载指示信号。 自适应控制器通过丢弃一个或多个相的操作并将调制脉冲重定向到剩余的一个或多个相位来提供对低负载条件的平滑和有效的转换，并且降低的相位提高了低负载条件下的功率效率。
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16.发明申请PULSE ADDING SCHEME FOR SMOOTH PHASE DROPPING AT LIGHT LOAD CONDITIONS FOR MULTIPHASE VOLTAGE REGULATORS 有权用于多相电压调节器的轻负载条件下的平滑相位抖动的脉冲增加方案公开(公告)号：US20100320977A1
公开(公告)日：2010-12-23
申请号：US12873102
申请日：2010-08-31
申请人： Weihong Qiu , Robert H. Isham , Chun Cheung
发明人： Weihong Qiu , Robert H. Isham , Chun Cheung
IPC分类号： G05F1/00
CPC分类号： H02M3/1584 , H02M2001/0032 , H02M2001/0041 , H02M2003/1586 , Y02B70/16
摘要： A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions.
摘要翻译： 一种用于多相调节器的脉冲控制系统，包括误差放大器，多相发生器和自适应控制器。 误差放大器提供指示输出电压误差的误差信号。 多相发生器根据误差信号产生相位调制脉冲。 自适应控制器响应于负载指示信号并将至少一个调制脉冲从第一相重定向到第二相。 可以从指示低功率模式的微处理器接收负载指示信号。 自适应控制器通过丢弃一个或多个相的操作并将调制脉冲重定向到剩余的一个或多个相位来提供对低负载条件的平滑和有效的转换，并且降低的相位提高了低负载条件下的功率效率。
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17.发明授权Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators 有权用于多相稳压器在轻负载条件下平滑相位降低的脉冲加法方案公开(公告)号：US07812581B2
公开(公告)日：2010-10-12
申请号：US11954888
申请日：2007-12-12
申请人： Weihong Qiu , Robert H. Isham , Chun Cheung
发明人： Weihong Qiu , Robert H. Isham , Chun Cheung
IPC分类号： G05F1/595
CPC分类号： H02M3/1584 , H02M2001/0032 , H02M2001/0041 , H02M2003/1586 , Y02B70/16
摘要： A multiphase regulator which includes an output node developing an output voltage, a feedback circuit determining error of the output voltage and providing a compensation signal indicative thereof, at least three phase circuits coupled in parallel to the output node, and an adaptive controller. Each phase circuit includes a modulation circuit and a switch circuit. Each modulation circuit receives the compensation signal and generates pulses on a corresponding one of the pulse modulation signals. Each switch circuit is coupled to the output node and is controlled by a corresponding pulse modulation signal. The adaptive controller is responsive to a load indication signal, such as indicating a low load condition, and drops operation of at least one of the phase circuits and adds at least one pulse to a pulse modulation signal of each remaining phase circuit.
摘要翻译： 多相调节器，其包括产生输出电压的输出节点，确定输出电压的误差的反馈电路，并提供指示其的补偿信号，与输出节点并联耦合的至少三相电路以及自适应控制器。 每相电路包括调制电路和开关电路。 每个调制电路接收补偿信号并在对应的一个脉冲调制信号上产生脉冲。 每个开关电路耦合到输出节点并由对应的脉冲调制信号控制。 自适应控制器响应诸如指示低负载状况的负载指示信号，并且降低至少一个相位电路的操作，并且将至少一个脉冲添加到每个剩余相位电路的脉冲调制信号。
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公开(公告)号：US07453246B2
公开(公告)日：2008-11-18
申请号：US11383878
申请日：2006-05-17
申请人： Weihong Qiu , Robert H. Isham , Zhixiang Liang
发明人： Weihong Qiu , Robert H. Isham , Zhixiang Liang
IPC分类号： G05F1/56
CPC分类号： H02M3/156 , H02M3/33507
摘要： An adaptive pulse positioning system for a voltage converter providing an output voltage, the system including a PWM generation circuit, a sensor, and a pulse positioning circuit. The PWM generation circuit generates a PWM signal with PWM pulses for controlling the output voltage of the voltage controller. The sensor senses an output load condition of the voltage converter and provides a load signal indicative thereof. The pulse positioning circuit adaptively positions the PWM pulses based on the load signal. A method of adaptively positioning PWM pulses that are used to control an output voltage of a voltage regulator including generating a series of PWM pulses based on a clock signal, sensing an output load condition, and adaptively shifting the series of PWM pulses based on the output load condition.
摘要翻译： 一种用于提供输出电压的电压转换器的自适应脉冲定位系统，该系统包括PWM生成电路，传感器和脉冲定位电路。 PWM生成电路生成PWM信号，PWM脉冲用于控制电压控制器的输出电压。 传感器感测电压转换器的输出负载状态，并提供指示其的负载信号。 脉冲定位电路根据负载信号自适应地定位PWM脉冲。 一种自适应地定位用于控制电压调节器的输出电压的PWM脉冲的方法，包括基于时钟信号产生一系列PWM脉冲，感测输出负载条件，以及基于输出自适应地移位一系列PWM脉冲 负载条件。
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19.发明授权High voltage gate driver using a low voltage multi-level current pulse translator 有权高压栅极驱动器采用低电压多电平电流脉冲转换器公开(公告)号：US07088151B1
公开(公告)日：2006-08-08
申请号：US10828610
申请日：2004-04-21
IPC分类号： H03B1/00
CPC分类号： H03K5/08 , H03K5/2472 , H03K17/6871 , H03K17/6872
摘要： A multi-level current pulse generator for driving the gates of a CMOS pair implemented using a low voltage process including a multi-level pulse translator, a current amplifier circuit, and a clamp circuit. The multi-level pulse translator generates a multi-level current pulse on at least one pulse node, each current pulse having a first large current pulse with short duration followed by at least one smaller current pulse of longer duration and operative to switch the CMOS pair with reduced average power dissipation. The current amplifier circuit amplifies the current pulses provided to the gates of the CMOS pair. The clamp circuit clamps gate voltage of the CMOS pair to prevent breakdown. In a tri-level case, a first current pulse charges and discharges gate capacitance, a second current pulse stabilizes gate voltage, and a third current pulse provides a holding current level.
摘要翻译： 一种用于驱动使用包括多电平脉冲转换器，电流放大器电路和钳位电路的低电压工艺实现的CMOS对的栅极的多电平电流脉冲发生器。 多电平脉冲转换器在至少一个脉冲节点上产生多电平电流脉冲，每个电流脉冲具有短持续时间的第一大电流脉冲，随后是至少一个较长持续时间的较小电流脉冲，并可操作以切换CMOS对 降低平均功耗。 电流放大器电路放大提供给CMOS对的栅极的电流脉冲。 钳位电路钳位CMOS对的栅极电压以防止击穿。 在三级情况下，第一电流脉冲对栅极电容进行放电，第二电流脉冲稳定栅极电压，并且第三电流脉冲提供保持电流电平。
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20.发明授权公开(公告)号：US07936540B2
公开(公告)日：2011-05-03
申请号：US12869960
申请日：2010-08-27
申请人： Robert H. Isham
发明人： Robert H. Isham
IPC分类号： H02H9/08
CPC分类号： H02H7/1227 , G01R1/203 , G01R19/0092 , H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A DC-DC converter includes a chip including an error amplifier, a pulse width modulator (PWM), and an inductor driven by said PWM in series with an output node (VOUT), wherein a load current flows through the inductor. A circuit for sensing the load current includes a first operational amplifier and a sense resistor having resistance RSENSE; wherein a sense current related to the load current flows through the sense resistor. A reference resistor has a resistance RREFERENCE which is a fixed multiple of RSENSE. A set resistor has a resistance RSET. Tracking circuitry sets a voltage across the reference resistor to be equal to a voltage across the set resistor. A function block receives a current through the set resistor and a current through the reference resistor to find their ratio. A current multiplier provides a measurement current which is proportional to the load current divided by RSET.
摘要翻译： DC-DC转换器包括包括误差放大器，脉冲宽度调制器（PWM）的芯片和由所述PWM与输出节点（VOUT）串联驱动的电感器，其中负载电流流经电感器。 用于感测负载电流的电路包括第一运算放大器和具有电阻RSENSE的检测电阻; 其中与负载电流相关的检测电流流过检测电阻器。 参考电阻具有RSENSE的固定倍数的电阻RREFERENCE。 一个电阻器具有电阻RSET。 跟踪电路将参考电阻两端的电压设置为等于设定电阻两端的电压。 功能块通过设置电阻接收电流和通过参考电阻的电流来找到它们的比例。 电流倍增器提供与负载电流成比例的测量电流，除以RSET。
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