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41. 发明授权

US07960951B2 Digital calibration with lossless current sensing in a multiphase switched power converter 有权
标题翻译：在多相开关电源转换器中进行无损耗电流检测的数字校准
公开(公告)号：US07960951B2
公开(公告)日：2011-06-14
申请号：US11779487
申请日：2007-07-18
申请人： Scott Wilson Southwell , Benjamim Tang , Robert T. Carroll , Steven Joseph Schulte
发明人： Scott Wilson Southwell , Benjamim Tang , Robert T. Carroll , Steven Joseph Schulte
IPC分类号： G05F1/595
CPC分类号： H02M3/1584 , H02M2001/0009
摘要： Disclosed is a multi-phase power regulator that accurately senses current at a load in a lossless manner and adjusts the power supplied to the load based on the sensed current. Also disclosed is a method of calibrating a multiphase voltage regulator by applying a known calibration current at the load and determining actual current values by the difference in measured values between when the known calibration current is applied and when it is not applied. The accurate current is determined at a known temperature and accurate temperature compensation is provided by a non-linear digital technique. Each phase of the multi-phase power regulator is individually calibrated so that balanced channels provide accurate power to the load. Also disclosed is a calibration method with minimal noise generation.
摘要翻译：公开了一种多相功率调节器，其以无损耗的方式精确地感测负载处的电流，并且基于感测的电流来调节提供给负载的功率。还公开了一种通过在负载处施加已知的校准电流并且通过施加已知校准电流之间的测量值和当不施加已知校准电流时的测量值的差来确定实际电流值来校准多相电压调节器的方法。在已知温度下确定精确电流，并通过非线性数字技术提供精确的温度补偿。单相校准多相功率调节器的每相，以便平衡通道为负载提供精确的功率。还公开了一种具有最小噪声产生的校准方法。

42. 发明授权

US07743168B2 PLL/DLL dual loop data synchronization 有权
标题翻译： PLL / DLL双循环数据同步
公开(公告)号：US07743168B2
公开(公告)日：2010-06-22
申请号：US12077002
申请日：2008-03-14
申请人： Benjamim Tang , Scott Southwell , Nicholas Robert Steffen
发明人： Benjamim Tang , Scott Southwell , Nicholas Robert Steffen
IPC分类号： G06F15/16
CPC分类号： H04J3/047 , H04J3/062 , H04J3/0685 , H04L7/033
摘要： A dual loop (PLL/DLL) data synchronization system and method for plesiochronous systems is provided. A dual loop data serializer includes a phase lock loop (PLL) and a delayed lock loop (DLL) configured with a phase shifter in the feedback path of the PLL. The dual loop serializer locks to the input of the DLL instead of the local reference. Thus, the DLL adjusts the frequency from the PLL so that it matches the desired data rate. Each loop may be optimized for jitter tolerance with the net effect generating a synthesized clean clock (due to narrow bandwidth filtering) and VCO noise suppression (due to wide bandwidth filtering). A dual loop retimer includes a dual loop serializer (PLL/DLL) and a clock recovery DLL. The retimer resets the jitter budget to meet transmission requirements for an infinite number of repeater stages.
摘要翻译：提供了一种双循环（PLL / DLL）数据同步系统和方法，用于同步系统。双环数据串行器包括在PLL的反馈路径中配置有移相器的锁相环（PLL）和延迟锁环（DLL）。双循环串行器锁定到DLL的输入，而不是本地引用。因此，DLL调整来自PLL的频率，使其与期望的数据速率相匹配。每个环路可以针对抖动容限进行优化，其净效应产生合成的干净时钟（由于窄带宽滤波）和VCO噪声抑制（由于宽带宽滤波）。双环重定时器包括双回路串行器（PLL / DLL）和时钟恢复DLL。重新定时器重置抖动预算以满足无限数量的中继器级的传输要求。

43. 发明授权

US07521913B2 Active transient response circuits, system and method for digital multiphase pulse width modulated regulators 有权
标题翻译：有源瞬态响应电路，数字多相脉宽调制调节器的系统和方法
公开(公告)号：US07521913B2
公开(公告)日：2009-04-21
申请号：US11311115
申请日：2005-12-19
申请人： Benjamim Tang , Robert T. Carroll , Scott Wilson Southwell , Kenneth A. Ostrom , Richard C. Pierson
发明人： Benjamim Tang , Robert T. Carroll , Scott Wilson Southwell , Kenneth A. Ostrom , Richard C. Pierson
IPC分类号： G05F1/618
CPC分类号： H02M3/1584
摘要： Disclosed is a multi-phase pulse width modulated voltage regulator and method in which transient voltage excursions or deviations that exceed the load line voltage by more than a pre-determined amount are detected by an ATR circuit and a correction signal is applied. The correction signal is in the form of asynchronous pulses and the number of such pulses is a function of the magnitude of the voltage excursion as determined by the number of thresholds that are exceeded. Also disclosed is an adaptive voltage positioning (AVP) circuit and method for early detection of a transient event by sensing voltage changes at the load and adjusting the target voltage with pre-determined current values prior to the time that ATR event changes in the current at the load are detected. The AVP load line is pre-positioned for more precise current control. Also disclosed is an adaptive filter with adjustable frequency characteristics in response to an ATR event. Also disclosed is a pulse limiting circuit. Also disclosed is a tri-state implementation. Response to transient events is further improved with an external ATR circuit coupled to the load.
摘要翻译：公开了一种多相脉宽调制电压调节器和方法，其中通过ATR电路检测超过负载线电压超过预定量的瞬态电压偏移或偏差，并且施加校正信号。校正信号是异步脉冲的形式，并且这样的脉冲的数量是由超过的阈值的数量确定的电压偏移的大小的函数。还公开了一种用于通过感测负载上的电压变化来早期检测瞬态事件的自适应电压定位（AVP）电路和方法，并且在ATR事件在电流当前变化的时刻之前用预定电流值调节目标电压检测负载。 AVP负载线预先定位，以实现更精确的电流控制。还公开了响应于ATR事件具有可调频率特性的自适应滤波器。还公开了一种脉冲限制电路。还公开了三态实现。外部ATR电路耦合到负载，进一步提高对瞬态事件的响应。

44. 发明授权

US06937685B2 Apparatus and method for counting high-speed early/late pulses from a high speed phase detector using a pulse accumulator 有权
标题翻译：用于使用脉冲累加器从高速相位检测器计数高速早/晚脉冲的装置和方法
公开(公告)号：US06937685B2
公开(公告)日：2005-08-30
申请号：US10008272
申请日：2001-11-13
申请人： Benjamim Tang
发明人： Benjamim Tang
IPC分类号： H03L7/081 , H03L7/087 , H03L7/089 , H03L7/093 , H03L7/099 , H03L7/14 , H04L7/033 , H03D3/24
CPC分类号： H03L7/089 , H03L7/081 , H03L7/0814 , H03L7/087 , H03L7/093 , H03L7/0996 , H03L7/14 , H04L7/0331 , H04L7/0337
摘要： The method and device according to the present invention provides a control system, method and apparatus for synchronizing a reference signal to high frequency data signals. Pulses are accumulated before reaching the integrator. Pulse accumulation is provided in a DLL clock and data recovery circuit. Pulses are accumulated using a ripple divider for rising transitions only. In another exemplary embodiment, pulses are accumulated using a ripple divider for both rising and falling transitions.
摘要翻译：根据本发明的方法和装置提供了一种用于使参考信号与高频数据信号同步的控制系统，方法和装置。脉冲在到达积分器之前累积。在DLL时钟和数据恢复电路中提供脉冲积累。使用纹波分配器对脉冲进行累积，仅用于上升转换。在另一示例性实施例中，使用用于上升和下降转换的波纹分配器累积脉冲。

45. 发明授权

US06791302B2 Methods and apparatus for open-loop enhanced control of power supply transients 有权
标题翻译：开环增强电源瞬态控制的方法和装置
公开(公告)号：US06791302B2
公开(公告)日：2004-09-14
申请号：US10104833
申请日：2002-03-21
申请人： Benjamim Tang , Keith Bassett , Tim Ng , Kenneth A. Ostrom , Nicholas Steffen , Cliff Duong
发明人： Benjamim Tang , Keith Bassett , Tim Ng , Kenneth A. Ostrom , Nicholas Steffen , Cliff Duong
IPC分类号： G05F1618
CPC分类号： G05F3/08
摘要： A system is provided for supplying current to a dynamic load subject to transient current requirements. A sense unit coupled to the dynamic load is configured to sense the rate of change of supply current required by the dynamic load during a transient event. A current source coupled to the sense unit is configured to supply a current pulse to the dynamic load in response to the sense unit determining that the rate of change of supply current (di/dt) exceeds a predetermined threshold. The current pulse preferably has a shape characterized by a first region and a second region subsequent to the second region, wherein the first region includes a first boost current which exceeds the transient current requirement, and wherein the second region includes a second boost current which is less than the transient current requirement. More generally, a wideband transient suppression system is provided for controlling a wide spectrum of transients. The wideband system includes a primary regulator configured to compensate for low frequency transients, and a secondary regulator configured to provide short-term compensation current to the dynamic load until the relatively slow primary regulator can accommodate the transient event. The secondary regulator includes two major functional blocks: a close-loop voltage-sensing compensation circuit configured to compensate for transients falling within a mid-range frequency range, and an open-loop di/dt-sensing compensation circuit configured to compensate for transients falling within a high-frequency range.
摘要翻译：提供一种系统，用于根据瞬态电流要求向动态负载提供电流。耦合到动态负载的感测单元被配置为感测在瞬态事件期间动态负载所需的电源电流的变化率。耦合到感测单元的电流源被配置为响应于感测单元确定电源电流（di / dt）的变化率超过预定阈值而将电流脉冲提供给动态负载。电流脉冲优选地具有第一区域和第二区域之后的第二区域的特征，其中第一区域包括超过瞬态电流要求的第一升压电流，并且其中第二区域包括第二升压电流，小于瞬态电流要求。更一般地，提供宽带瞬态抑制系统来控制广泛的瞬变。宽带系统包括被配置为补偿低频瞬变的主调节器，以及被配置为向动态负载提供短期补偿电流的次级调节器，直到相对较慢的初级调节器可以适应瞬态事件。次级调节器包括两个主要功能块：闭环电压感测补偿电路，被配置为补偿落在中档频率范围内的瞬变，以及开环di / dt感测补偿电路，其被配置为补偿瞬时下降在高频范围内。

46. 发明授权

US09285399B2 Switching regulator cycle-by-cycle current estimation 有权
标题翻译：开关稳压器逐周期电流估计
公开(公告)号：US09285399B2
公开(公告)日：2016-03-15
申请号：US13537827
申请日：2012-06-29
申请人： Amir Babazadeh , Benjamim Tang , Giuseppe Bernacchia
发明人： Amir Babazadeh , Benjamim Tang , Giuseppe Bernacchia
IPC分类号： G05F1/10 , G01R19/00 , H02M3/156 , H02M3/158 , H02M1/00
CPC分类号： G01R19/0092 , H02M3/156 , H02M3/1584 , H02M2001/0009 , H02M2003/1566
摘要： A switching regulator includes an output phase having a high-side transistor and a low-side transistor operable to switch on and off at different periods responsive to a pulse width modulation (PWM) signal applied to the output phase, each cycle of the PWM signal having an on-portion and an off-portion. The switching regulator further includes a current sense circuit operable to sense the current of the low-side transistor, an analog-to-digital converter operable to sample the sensed low-side transistor current during the off-portion for each PWM cycle and a current estimator operable to estimate a cycle average current for the present PWM cycle based on the low-side transistor current sampled during the off-portion for the immediately preceding PWM cycle and a pulse width estimate for the on-portion for the present PWM cycle.
摘要翻译：开关调节器包括具有高侧晶体管和低侧晶体管的输出相位，可操作以响应于施加到输出相位的脉冲宽度调制（PWM）信号在不同周期接通和关断PWM信号的每个周期具有一部分和一部分。开关调节器还包括可感测低侧晶体管的电流的电流检测电路，可操作以在每个PWM周期的截止部分期间对感测到的低侧晶体管电流进行采样的模数转换器和电流估计器，其可操作以基于在前一个PWM周期的截止部分期间采样的低侧晶体管电流以及用于当前PWM周期的导通部分的脉冲宽度估计来估计当前PWM周期的周期平均电流。

47. 发明授权

US09240721B2 Multiphase digital current mode controller with dynamic current allocation 有权
标题翻译：具有动态电流分配功能的多相数字电流模式控制器
公开(公告)号：US09240721B2
公开(公告)日：2016-01-19
申请号：US13547282
申请日：2012-07-12
申请人： Amir Babazadeh , Benjamim Tang , Giuseppe Bernacchia , Kenneth Ostrom
发明人： Amir Babazadeh , Benjamim Tang , Giuseppe Bernacchia , Kenneth Ostrom
IPC分类号： H02M3/158 , H02M1/00 , H02M3/156
CPC分类号： H02M3/1584 , H02M2001/0032 , H02M2003/1566 , Y02B70/16
摘要： A multiphase switching regulator includes a power stage with at least a first phase and a second phase for supplying power to a load through inductors coupling the phases to the load. The multiphase switching regulator is operated by switching the first phase at a higher switching frequency than the second phase via pulse width modulation (PWM) signals provided to the phases. A phase-specific target current is generated for each phase at the switching frequency for that phase based on the difference between an output voltage of the power stage and a reference voltage. The current in the inductors coupling the phases to the load is sensed, and a duty cycle of the PWM signal provided to each phase is adjusted based on the phase-specific target current and sensed inductor current for that phase.
摘要翻译：多相开关调节器包括具有至少第一相和第二相的功率级，用于通过将相耦合到负载的电感器向负载供电。通过经由提供给相的脉宽调制（PWM）信号，以比第二相更高的开关频率切换第一相来操作多相开关稳压器。基于功率级的输出电压和参考电压之间的差异，针对该相的开关频率的每相产生相位特定的目标电流。感测将相位耦合到负载的电感器中的电流，并且基于该相位的相位特定目标电流和检测到的电感器电流来调整提供给每个相位的PWM信号的占空比。

48. 发明授权

US08879217B2 Switching regulator with negative current limit protection 有权
标题翻译：开关稳压器带负极限流保护
公开(公告)号：US08879217B2
公开(公告)日：2014-11-04
申请号：US13537907
申请日：2012-06-29
申请人： Benjamim Tang , Amir Babazadeh
发明人： Benjamim Tang , Amir Babazadeh
IPC分类号： H02H3/22
CPC分类号： H02M1/32 , H02M3/1584
摘要： A switching regulator includes a power stage for coupling to a load through an inductor. The power stage switches so that the power stage sources positive current to the load through a first transistor of the power stage during some periods and sinks negative current from the load through a second transistor of the power stage during other periods. The switching regulator further includes a protection circuit operable to force the second transistor into an off-state state responsive to the negative current flowing through the inductor exceeding a predetermined negative threshold.
摘要翻译：开关调节器包括用于通过电感器耦合到负载的功率级。功率级开关使得功率级在一段时间内通过功率级的第一晶体管向负载提供正电流，并且在其它时段期间通过功率级的第二晶体管从负载吸收负电流。开关调节器还包括保护电路，其可操作以响应于流过电感器的负电流超过预定的负阈值而迫使第二晶体管进入截止状态。

49. 发明申请

US20140015500A1 MULTIPHASE DIGITAL CURRENT MODE CONTROLLER WITH DYNAMIC CURRENT ALLOCATION 有权
标题翻译：具有动态电流分配的多相数字电流模式控制器
公开(公告)号：US20140015500A1
公开(公告)日：2014-01-16
申请号：US13547282
申请日：2012-07-12
申请人： Amir Babazadeh , Benjamim Tang , Giuseppe Bernacchia , Kenneth Ostrom
发明人： Amir Babazadeh , Benjamim Tang , Giuseppe Bernacchia , Kenneth Ostrom
IPC分类号： G05F1/565
CPC分类号： H02M3/1584 , H02M2001/0032 , H02M2003/1566 , Y02B70/16
摘要： A multiphase switching regulator includes a power stage with at least a first phase and a second phase for supplying power to a load through inductors coupling the phases to the load. The multiphase switching regulator is operated by switching the first phase at a higher switching frequency than the second phase via pulse width modulation (PWM) signals provided to the phases. A phase-specific target current is generated for each phase at the switching frequency for that phase based on the difference between an output voltage of the power stage and a reference voltage. The current in the inductors coupling the phases to the load is sensed, and a duty cycle of the PWM signal provided to each phase is adjusted based on the phase-specific target current and sensed inductor current for that phase.
摘要翻译：多相开关调节器包括具有至少第一相和第二相的功率级，用于通过将相耦合到负载的电感器向负载供电。通过经由提供给相的脉宽调制（PWM）信号，以比第二相更高的开关频率切换第一相来操作多相开关稳压器。基于功率级的输出电压和参考电压之间的差异，针对该相的开关频率的每相产生相位特定的目标电流。感测将相位耦合到负载的电感器中的电流，并且基于该相位的相位特定目标电流和检测到的电感器电流来调整提供给每个相位的PWM信号的占空比。

50. 发明申请

US20140002037A1 Switching Regulator Cycle-by-Cycle Current Estimation 有权
标题翻译：开关稳压器逐周期电流估计
公开(公告)号：US20140002037A1
公开(公告)日：2014-01-02
申请号：US13537827
申请日：2012-06-29
申请人： Amir Babazadeh , Benjamim Tang , Giuseppe Bernacchia
发明人： Amir Babazadeh , Benjamim Tang , Giuseppe Bernacchia
IPC分类号： G05F1/46 , G01R19/00
CPC分类号： G01R19/0092 , H02M3/156 , H02M3/1584 , H02M2001/0009 , H02M2003/1566
摘要： A switching regulator includes an output phase having a high-side transistor and a low-side transistor operable to switch on and off at different periods responsive to a pulse width modulation (PWM) signal applied to the output phase, each cycle of the PWM signal having an on-portion and an off-portion. The switching regulator further includes a current sense circuit operable to sense the current of the low-side transistor, an analog-to-digital converter operable to sample the sensed low-side transistor current during the off-portion for each PWM cycle and a current estimator operable to estimate a cycle average current for the present PWM cycle based on the low-side transistor current sampled during the off-portion for the immediately preceding PWM cycle and a pulse width estimate for the on-portion for the present PWM cycle.
摘要翻译：开关调节器包括具有高侧晶体管和低侧晶体管的输出相位，可操作以响应于施加到输出相位的脉冲宽度调制（PWM）信号在不同周期接通和关断PWM信号的每个周期具有一部分和一部分。开关调节器还包括可感测低侧晶体管的电流的电流检测电路，可操作以在每个PWM周期的截止部分期间对感测到的低侧晶体管电流进行采样的模数转换器和电流估计器，其可操作以基于在前一个PWM周期的截止部分期间采样的低侧晶体管电流以及用于当前PWM周期的导通部分的脉冲宽度估计来估计当前PWM周期的周期平均电流。

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