公开(公告)号：US20090015231A1

公开(公告)日：2009-01-15

申请号：US12117405

申请日：2008-05-08

申请人： Wenkai Wu ,  Ken Boyden ,  Rami Hamze

发明人： Wenkai Wu ,  Ken Boyden ,  Rami Hamze

IPC分类号： G05F1/00

CPC分类号： H04B14/026 ,  H02M3/157 ,  H02M3/33515

摘要： A pulse width (PWM) controller for a voltage converter having at least one switch, an Analog to Digital Converter (ADC) circuit for digitizing inputted state variables including a feedback voltage from an output of the voltage converter and a reference voltage for setting the output of the voltage converter and providing a digital error signal, and a Proportional Integration and Derivation (PID) circuit receiving the digital error signal and providing a digital duty cycle signal. The controller including a Digital to Analog Converter (DAC) circuit for converting the digital duty cycle signal into an analog DAC output signal; and a comparator circuit for comparing a first signal including the DAC output signal with a reference signal for generating a pulse width modulated control signal for controlling the switching of the at least one switch of the voltage converter.

摘要翻译： 一种用于具有至少一个开关的电压转换器的脉冲宽度（PWM）控制器，用于将包括来自电压转换器的输出的反馈电压的输入状态变量数字化的模数转换器（ADC）电路和用于设置输出的参考电压 并提供数字误差信号，以及接收数字误差信号并提供数字占空比信号的比例积分和推导（PID）电路。 控制器包括用于将数字占空比信号转换为模拟DAC输出信号的数模转换器（DAC）电路; 以及比较器电路，用于将包括DAC输出信号的第一信号与用于产生用于控制电压转换器的至少一个开关的开关的脉宽调制控制信号的参考信号进行比较。

公开(公告)号：US08476880B2

公开(公告)日：2013-07-02

申请号：US12859575

申请日：2010-08-19

申请人： Wei Dong ,  Xiao Xu ,  Wenkai Wu

发明人： Wei Dong ,  Xiao Xu ,  Wenkai Wu

IPC分类号： G05F1/573

CPC分类号： H02M3/33507 ,  H02M3/156 ,  H02M2001/0025 ,  H02M2001/0032 ,  Y02B70/16

摘要： One embodiment of the invention includes regulation voltage system for a power supply system. The system includes a current sense system configured to generate a sense signal that represents an output current of the power supply system that is supplied to a load. The system also includes a positive voltage droop controller configured to provide a regulation voltage to the power supply system, the positive voltage droop controller setting the regulation voltage to one of a predetermined fixed reference voltage or a variable reference voltage based on the sense signal. The variable reference voltage can be less than the predetermined fixed reference voltage.

摘要翻译： 本发明的一个实施例包括用于电源系统的调节电压系统。 该系统包括电流检测系统，该电流检测系统被配置为产生代表提供给负载的电源系统的输出电流的检测信号。 该系统还包括正电压下降控制器，其被配置为向电源系统提供调节电压，正电压下降控制器基于感测信号将调节电压设置为预定的固定参考电压或可变参考电压之一。 可变参考电压可以小于预定的固定参考电压。

公开(公告)号：US08174250B2

公开(公告)日：2012-05-08

申请号：US12246148

申请日：2008-10-06

申请人： Wenkai Wu ,  Ken Boyden ,  Rami Hamze

发明人： Wenkai Wu ,  Ken Boyden ,  Rami Hamze

IPC分类号： G05F1/59

CPC分类号： H02M3/156 ,  H03K5/088 ,  H03K7/08

摘要： A ripple regulator for providing a pulse width modulation (PWM) signal for regulating an output voltage of a power converter switching stage. The regulator including a ripple circuit for providing a ripple voltage; a comparison circuit for comparing the ripple voltage to an output of an error amplifier; and a PWM circuit producing the PWM signal and receiving an output of the comparison circuit and a clock signal input, the clock signal input determining a first edge of the PWM signal and the output of said comparison circuit determining a second edge of the PWM signal.

摘要翻译： 一种纹波调节器，用于提供用于调节功率转换器切换级的输出电压的脉宽调制（PWM）信号。 调节器包括用于提供纹波电压的纹波电路; 用于将纹波电压与误差放大器的输出进行比较的比较电路; 以及PWM电路，其产生PWM信号并接收比较电路的输出和时钟信号输入，所述时钟信号输入确定所述PWM信号的第一边缘，并且所述比较电路的输出确定所述PWM信号的第二边沿。

公开(公告)号：US20120043946A1

公开(公告)日：2012-02-23

申请号：US12859575

申请日：2010-08-19

申请人： WEI DONG ,  Xiao Xu ,  Wenkai Wu

发明人： WEI DONG ,  Xiao Xu ,  Wenkai Wu

IPC分类号： G05F3/02

CPC分类号： H02M3/33507 ,  H02M3/156 ,  H02M2001/0025 ,  H02M2001/0032 ,  Y02B70/16

摘要： One embodiment of the invention includes regulation voltage system for a power supply system. The system includes a current sense system configured to generate a sense signal that represents an output current of the power supply system that is supplied to a load. The system also includes a positive voltage droop controller configured to provide a regulation voltage to the power supply system, the positive voltage droop controller setting the regulation voltage to one of a predetermined fixed reference voltage or a variable reference voltage based on the sense signal. The variable reference voltage can be less than the predetermined fixed reference voltage.

摘要翻译： 本发明的一个实施例包括用于电源系统的调节电压系统。 该系统包括电流检测系统，该电流检测系统被配置为产生代表提供给负载的电源系统的输出电流的检测信号。 该系统还包括正电压下降控制器，其被配置为向电源系统提供调节电压，正电压下降控制器基于感测信号将调节电压设置为预定的固定参考电压或可变参考电压之一。 可变参考电压可以小于预定的固定参考电压。

公开(公告)号：US20120032748A1

公开(公告)日：2012-02-09

申请号：US12849799

申请日：2010-08-03

申请人： Xuening Li ,  Hal Chen ,  Weidong Zhu ,  Wenkai Wu

发明人： Xuening Li ,  Hal Chen ,  Weidong Zhu ,  Wenkai Wu

IPC分类号： H03K7/08 ,  G05F1/10 ,  H03K5/12

CPC分类号： H03K5/1252

摘要： Systems and devices for ripple reduction in a DC/DC converter are presented. The disclosed systems and methods enable ripple reduction in discontinuous conduction mode (DCM) operation. In DCM, the inductor current peak to peak ripple may be reduced based on the load current. To achieve the reduction of the inductor peak to peak current ripple, a digital counter is used to count the time between consecutive PWM pulses. The digital output of the counter is used to control the pulse width modulation. As the digital output of the counter increases, the PWM on-time decreases. Since the PWM pulse is demanded by the load in DCM mode, the peak to peak inductor ripple is modulated by the counter, or, in turn, modulated by the load current.

摘要翻译： 介绍了DC / DC转换器中纹波降低的系统和器件。 所公开的系统和方法使得不连续导通模式（DCM）操作中的纹波降低。 在DCM中，电感电流峰峰值纹波可能会根据负载电流而减小。 为了实现电感峰值电流纹波的降低，使用数字计数器对连续PWM脉冲之间的时间进行计数。 计数器的数字输出用于控制脉宽调制。 随着计数器的数字输出增加，PWM导通时间减小。 由于PWM模式下的负载要求PWM脉冲，所以峰值电感纹波由计数器调制，或由负载电流调制。

公开(公告)号：US08067927B2

公开(公告)日：2011-11-29

申请号：US11775573

申请日：2007-07-10

申请人： Wenkai Wu ,  George Schuellein

发明人： Wenkai Wu ,  George Schuellein

IPC分类号： G05F1/00 ,  H03M1/00 ,  H03M1/82

CPC分类号： H03M1/504

摘要： A control circuit for a multi-phase converter including an analog front-end circuit for receiving and processing an output voltage and current of the converter circuits and an average output current; a digital circuit for producing an output voltage reference for setting a desired output voltage of the converter; and an error circuit for comparing the output voltage reference and a parameter related to said output voltage and current for generating control signals for controlling the converter circuits, said error circuit including an Analog to Digital Converter circuit, further comprising a digital PWM generation circuit controlled by said Analog to Digital converter circuit for generating digital control signals for controlling the converter circuits.

摘要翻译： 一种用于多相转换器的控制电路，包括用于接收和处理转换器电路的输出电压和电流的模拟前端电路和平均输出电流; 数字电路，用于产生用于设置转换器的期望输出电压的输出电压基准; 以及用于比较输出电压基准和与所述输出电压和电流相关的参数的误差电路，用于产生用于控制转换器电路的控制信号，所述误差电路包括模数转换器电路，还包括数字PWM生成电路， 所述模数转换器电路用于产生用于控制转换器电路的数字控制信号。

公开(公告)号：US07944193B2

公开(公告)日：2011-05-17

申请号：US12117405

申请日：2008-05-08

申请人： Wenkai Wu ,  Ken Boyden ,  Rami Hamze

发明人： Wenkai Wu ,  Ken Boyden ,  Rami Hamze

IPC分类号： G05F1/40

CPC分类号： H04B14/026 ,  H02M3/157 ,  H02M3/33515

摘要： A pulse width (PWM) controller for a voltage converter having at least one switch, an Analog to Digital Converter (ADC) circuit for digitizing inputted state variables including a feedback voltage from an output of the voltage converter and a reference voltage for setting the output of the voltage converter and providing a digital error signal, and a Proportional Integration and Derivation (PID) circuit receiving the digital error signal and providing a digital duty cycle signal. The controller including a Digital to Analog Converter (DAC) circuit for converting the digital duty cycle signal into an analog DAC output signal; and a comparator circuit for comparing a first signal including the DAC output signal with a reference signal for generating a pulse width modulated control signal for controlling the switching of the at least one switch of the voltage converter.

摘要翻译： 一种用于具有至少一个开关的电压转换器的脉冲宽度（PWM）控制器，用于将包括来自电压转换器的输出的反馈电压的输入状态变量数字化的模数转换器（ADC）电路和用于设置输出的参考电压 并提供数字误差信号，以及接收数字误差信号并提供数字占空比信号的比例积分和推导（PID）电路。 控制器包括用于将数字占空比信号转换为模拟DAC输出信号的数模转换器（DAC）电路; 以及比较器电路，用于将包括DAC输出信号的第一信号与用于产生用于控制电压转换器的至少一个开关的开关的脉宽调制控制信号的参考信号进行比较。

公开(公告)号：US07733675B2

公开(公告)日：2010-06-08

申请号：US11781595

申请日：2007-07-23

申请人： Wenkai Wu ,  George Schuellein

发明人： Wenkai Wu ,  George Schuellein

IPC分类号： H02M7/00 ,  G05F1/40

CPC分类号： H03K7/08 ,  H02M3/1584

摘要： A circuit for preventing inductor saturation during a step-up load transient in a multi-phase converter circuit where phases are turned ON sequentially by a shared clock signal with a fixed phase shift, each phase having high- and low-side switches series connected at a switching node, the circuit including at least one closed loop connected to at least one phase for providing ripple current cancellation in input and output sides of the multi-phase converter circuit; an oscillator circuit for providing a signal to turn ON and OFF the high- and low-side switches of each of the phases of the multi-phase converter circuit; and a detection circuit to detect the transient. The detect circuit includes an error amplifier circuit to receive input signals from an output of the multi-phase converter and to provide an error signal; and a clock oscillator frequency changing circuit receiving the error signal for increasing the clock oscillation frequency when said detection circuit detects a step-up load transient.

摘要翻译： 一种用于在多相转换器电路中的升压负载瞬变期间防止电感饱和的电路，其中相位通过具有固定相移的共享时钟信号依次导通，每相具有串联连接的高低侧开关 开关节点，所述电路包括连接到至少一个相的至少一个闭环，用于在多相转换器电路的输入和输出侧提供纹波电流消除; 振荡器电路，用于提供用于接通和断开多相转换器电路的每个相的高侧和低侧开关的信号; 以及用于检测瞬态的检测电路。 检测电路包括误差放大器电路，用于从多相转换器的输出接收输入信号并提供误差信号; 以及时钟振荡器频率改变电路，当所述检测电路检测到升压负载瞬变时，接收用于增加时钟振荡频率的误差信号。

公开(公告)号：US07593200B2

公开(公告)日：2009-09-22

申请号：US11838339

申请日：2007-08-14

申请人： Wenkai Wu ,  George Schuellein

发明人： Wenkai Wu ,  George Schuellein

IPC分类号： H02H3/00

CPC分类号： H02H7/1213

摘要： A circuit for detecting faults in a converter, the converter including a switching stage having high- and low-side series switches connected together at a switching node and fault circuitry for managing a plurality of fault conditions, an input voltage source being provided at one terminal of the high-side switch. The circuit including a gate driver circuit connected to gate terminals of the high- and low-side switches for providing PWM signals to control the switching stage; a comparator circuit for comparing a voltage at the switching node to the input voltage and providing an output signal, the comparator circuit having output, positive and negative terminals; a capacitor connected to the output terminal of the comparator circuit to generate an AC component of the comparator circuit output signal; and a rectifier circuit connected to the capacitor for rectifying the AC component of the comparator circuit output signal and providing a fault-indicating signal to the gate driver circuit. The fault-indicating signal is used to drive the fault circuitry to correct a fault condition selected from the plurality of fault conditions in the converter system.

摘要翻译： 一种用于检测转换器中的故障的电路，所述转换器包括在开关节点处连接在一起的高侧和低侧串联开关的开关级和用于管理多个故障条件的故障电路，在一个端子处提供输入电压源 的高侧开关。 该电路包括连接到高侧和低侧开关的栅极端的栅极驱动电路，用于提供PWM信号以控制开关级; 比较器电路，用于将开关节点处的电压与输入电压进行比较并提供输出信号，所述比较器电路具有输出端子，正极端子和负极端子; 电容器连接到比较器电路的输出端，以产生比较器电路输出信号的AC分量; 以及整流电路，连接到电容器，用于对比较器电路输出信号的AC分量进行整流，并向栅极驱动器电路提供故障指示信号。 故障指示信号用于驱动故障电路以校正从转换器系统中的多个故障状况中选择的故障状况。

公开(公告)号：US20090174380A1

公开(公告)日：2009-07-09

申请号：US12246148

申请日：2008-10-06

申请人： Wenkai Wu ,  Ken Boyden ,  Rami Hamze

发明人： Wenkai Wu ,  Ken Boyden ,  Rami Hamze

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H03K5/088 ,  H03K7/08

摘要： A ripple regulator for providing a pulse width modulation (PWM) signal for regulating an output voltage of a power converter switching stage. The regulator including a ripple circuit for providing a ripple voltage; a comparison circuit for comparing the ripple voltage to an output of an error amplifier; and a PWM circuit producing the PWM signal and receiving an output of the comparison circuit and a clock signal input, the clock signal input determining a first edge of the PWM signal and the output of said comparison circuit determining a second edge of the PWM signal.

摘要翻译： 一种纹波调节器，用于提供用于调节功率转换器切换级的输出电压的脉宽调制（PWM）信号。 调节器包括用于提供纹波电压的纹波电路; 用于将纹波电压与误差放大器的输出进行比较的比较电路; 以及PWM电路，其产生PWM信号并接收比较电路的输出和时钟信号输入，所述时钟信号输入确定所述PWM信号的第一边缘，并且所述比较电路的输出确定所述PWM信号的第二边沿。