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公开(公告)号：US08866547B2
公开(公告)日：2014-10-21
申请号：US13752287
申请日：2013-01-28
Applicant: QUALCOMM Incorporated
Inventor： Lennart Karl-Axel Mathe , Pengfei Li , Song S Shi , Yunfei Shi , Joseph D Rutkowski
CPC classification number: H03F1/0222 , H03F1/0227 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/102 , H03F2200/451
Abstract: Techniques for dynamically generating a headroom voltage for an envelope tracking system. In an aspect, an initial headroom voltage is updated when a signal from a power amplifier (PA) indicates that the PA headroom is insufficient. The initial headroom voltage may be updated to an operating headroom voltage that includes the initial voltage plus a deficiency voltage plus a margin. In this manner, the operating headroom voltage may be dynamically selected to minimize power consumption while still ensuring that the PA is linear. In a further aspect, a specific exemplary embodiment of a headroom voltage generator using a counter is described.
Abstract translation: 用于动态产生包络跟踪系统的净空电压的技术。 在一方面，当来自功率放大器（PA）的信号指示PA余量不足时，更新初始余量电压。 初始余量电压可以被更新为包括初始电压加上缺陷电压加上余量的操作净空电压。 以这种方式，可以动态选择操作净空电压以最小化功耗，同时仍然确保PA是线性的。 在另一方面，描述了使用计数器的净空电压发生器的具体示例性实施例。
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2.发明申请公开(公告)号：US20140266117A1
公开(公告)日：2014-09-18
申请号：US13828044
申请日：2013-03-14
Applicant: QUALCOMM INCORPORATED
Inventor： Ricardo T Goncalves , Troy Stockstad , Joseph D Rutkowski
IPC: H02M3/157
CPC classification number: H02M3/158 , H02M1/08 , H02M3/155 , H02M2001/0003 , H02M2001/0045
Abstract: The present disclosure includes systems and methods for 100% duty cycle in switching regulators. A switching regulator circuit includes a ramp generator to produce a ramp signal having a period and a comparator to receive the ramp signal and an error signal, and in accordance therewith, produce a modulation signal. In a first mode of operation, the ramp signal increases to intersect the error signal, and in accordance therewith, changes a state of a switching transistor during each period of the ramp signal. In a second mode of operation, the error signal increase above a maximum value of the ramp signal, and in accordance therewith, the switching transistor is turned on for one or more full periods of the ramp signal.
Abstract translation: 本公开包括用于开关稳压器中的100％占空比的系统和方法。 开关调节器电路包括斜坡发生器以产生具有周期的斜坡信号和用于接收斜坡信号的比较器和误差信号，并且根据其产生调制信号。 在第一操作模式中，斜坡信号增加以与误差信号相交，因此，在斜坡信号的每个周期期间改变开关晶体管的状态。 在第二操作模式中，误差信号增加到斜坡信号的最大值之上，并且根据此，开关晶体管导通一个或多个斜坡信号的整个周期。
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公开(公告)号：US09601999B2
公开(公告)日：2017-03-21
申请号：US14625068
申请日：2015-02-18
Applicant: QUALCOMM Incorporated
Inventor： Joseph D Rutkowski
CPC classification number: H02M3/158 , G05F3/02 , H02J1/00 , H02M1/088 , H02M3/1588 , H02M2001/0032 , H02M2001/0054 , H03K17/122 , Y02B70/1466 , Y02B70/1491
Abstract: Techniques for optimizing the trade-off between minimizing switching losses and minimizing conduction losses in a buck converter. In an aspect, each of a high-side switch and a low-side switch may be implemented as a plurality of parallel-coupled transistors, each transistor having an independently controllable gate voltage, allowing adjustment of the effective transistor size. In response to the target voltage of the buck converter corresponding to a relatively high voltage range, more high-side switch transistors and fewer low-side switch transistors may be selected. Similarly, in response to the target voltage corresponding to a relatively low voltage range, more low-side switch transistors and fewer high-side switch transistors may be selected. In an aspect, the techniques may be applied during a pulse-frequency modulation mode.
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公开(公告)号：US20140210433A1
公开(公告)日：2014-07-31
申请号：US13752197
申请日：2013-01-28
Applicant: QUALCOMM INCORPORATED
Inventor： Joseph D Rutkowski , Lennart Karl-Axel Mathe
IPC: G05F1/618
CPC classification number: G05F1/618 , H02M3/156 , H02M3/1563 , H02M2001/0009
Abstract: Techniques for providing negative current information to a control loop for a buck converter in reverse boost mode. In an aspect, negative as well as positive current through an inductor is sensed and provided to adjust a ramp voltage in the control loop for the buck converter. The techniques may prevent current through the inductor during reverse boost mode from becoming increasingly negative without bound; the techniques thereby reduce settling times when the target output voltage is reduced from a first level to a second level. In an aspect, the negative current sensing may be provided by sensing negative current through a charging, or PMOS, switch of the buck converter. The sensed negative current may be subtracted from a current used to generate the ramp voltage.
Abstract translation: 用于以反向升压模式向降压转换器的控制回路提供负电流信息的技术。 在一个方面，检测并提供通过电感器的负电流和正电流以调整用于降压转换器的控制回路中的斜坡电压。 这些技术可以防止在反向升压模式期间通过电感器的电流在没有限制的情况下变得越来越负; 因此当目标输出电压从第一电平降低到第二电平时，这些技术可以减少稳定时间。 在一方面，负电流感测可以通过感测通过降压转换器的充电或PMOS开关的负电流来提供。 感测到的负电流可以从用于产生斜坡电压的电流中减去。
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Patent Agency Ranking
公开(公告)号：US09442503B2
公开(公告)日：2016-09-13
申请号：US13752197
申请日：2013-01-28
Applicant: QUALCOMM Incorporated
Inventor： Joseph D Rutkowski , Lennart Karl-Axel Mathe
CPC classification number: G05F1/618 , H02M3/156 , H02M3/1563 , H02M2001/0009
Abstract: Techniques for providing negative current information to a control loop for a buck converter in reverse boost mode. In an aspect, negative as well as positive current through an inductor is sensed and provided to adjust a ramp voltage in the control loop for the buck converter. The techniques may prevent current through the inductor during reverse boost mode from becoming increasingly negative without bound; the techniques thereby reduce settling times when the target output voltage is reduced from a first level to a second level. In an aspect, the negative current sensing may be provided by sensing negative current through a charging, or PMOS, switch of the buck converter. The sensed negative current may be subtracted from a current used to generate the ramp voltage.
Abstract translation: 用于以反向升压模式向降压转换器的控制回路提供负电流信息的技术。 在一个方面，检测并提供通过电感器的负电流和正电流以调整用于降压转换器的控制回路中的斜坡电压。 这些技术可以防止在反向升压模式期间通过电感器的电流在没有限制的情况下变得越来越负; 因此当目标输出电压从第一电平降低到第二电平时，这些技术可以减少稳定时间。 在一方面，负电流感测可以通过感测通过降压转换器的充电或PMOS开关的负电流来提供。 感测到的负电流可以从用于产生斜坡电压的电流中减去。
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公开(公告)号：US20140210447A1
公开(公告)日：2014-07-31
申请号：US13752267
申请日：2013-01-28
Applicant: QUALCOMM INCORPORATED
Inventor： Joseph D Rutkowski
IPC: G05F3/02
CPC classification number: H02M3/158 , G05F3/02 , H02J1/00 , H02M1/088 , H02M3/1588 , H02M2001/0032 , H02M2001/0054 , H03K17/122 , Y02B70/1466 , Y02B70/1491
Abstract: Techniques for optimizing the trade-off between minimizing switching losses and minimizing conduction losses in a buck converter. In an aspect, each of a high-side switch and a low-side switch may be implemented as a plurality of parallel-coupled transistors, each transistor having an independently controllable gate voltage, allowing adjustment of the effective transistor size. In response to the target voltage of the buck converter corresponding to a relatively high voltage range, more high-side switch transistors and fewer low-side switch transistors may be selected. Similarly, in response to the target voltage corresponding to a relatively low voltage range, more low-side switch transistors and fewer high-side switch transistors may be selected. In an aspect, the techniques may be applied during a pulse-frequency modulation mode.
Abstract translation: 用于优化在降低转换器中最小化开关损耗和最小化传导损耗之间权衡的技术。 一方面，高侧开关和低侧开关中的每一个可以被实现为多个并联耦合晶体管，每个晶体管具有独立可控的栅极电压，从而允许有效晶体管尺寸的调节。 响应于对应于较高电压范围的降压转换器的目标电压，可以选择更多的高侧开关晶体管和较少的低侧开关晶体管。 类似地，响应于对应于相对低电压范围的目标电压，可以选择更多的低侧开关晶体管和较少的高侧开关晶体管。 在一个方面，可以在脉冲 - 频率调制模式期间应用这些技术。
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公开(公告)号：US09306520B2
公开(公告)日：2016-04-05
申请号：US13752241
申请日：2013-01-28
Applicant: QUALCOMM Incorporated
Inventor： Lennart Karl-Axel Mathe , Joseph D Rutkowski , Song S Shi
CPC classification number: H03G1/0005 , H03F1/0238
Abstract: Techniques for preventing reverse current in applications wherein a tracking supply voltage is placed in parallel with a switching power stage. The tracking supply voltage may be boosted to a level higher than a battery supply voltage using, e.g., a boost converter. In an aspect, a negative current detection block is provided to detect negative current flow from the boosted tracking supply voltage to the battery supply voltage. A high-side switch of the switching power stage may be disabled in response to detecting the negative current. To prevent false tripping, the tracking supply voltage may be further compared with the battery supply voltage, and a latch may be provided to further control the high-side switch.
Abstract translation: 在跟踪电源电压与开关功率级并联放置的应用中用于防止反向电流的技术。 使用例如升压转换器，跟踪电源电压可以升高到高于电池电源电压的电平。 在一方面，提供负电流检测块以检测从升压的跟踪电源电压到电池电源电压的负电流。 可以响应于检测到负电流而禁用开关功率级的高侧开关。 为了防止错误跳闸，可以将跟踪电源电压进一步与电池电源电压进行比较，并且可以提供锁存器以进一步控制高侧开关。
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8.发明授权公开(公告)号：US09287779B2
公开(公告)日：2016-03-15
申请号：US13828044
申请日：2013-03-14
Applicant: QUALCOMM Incorporated
Inventor： Ricardo T Goncalves , Troy Stockstad , Joseph D Rutkowski
CPC classification number: H02M3/158 , H02M1/08 , H02M3/155 , H02M2001/0003 , H02M2001/0045
Abstract: The present disclosure includes systems and methods for 100% duty cycle in switching regulators. A switching regulator circuit includes a ramp generator to produce a ramp signal having a period and a comparator to receive the ramp signal and an error signal, and in accordance therewith, produce a modulation signal. In a first mode of operation, the ramp signal increases to intersect the error signal, and in accordance therewith, changes a state of a switching transistor during each period of the ramp signal. In a second mode of operation, the error signal increase above a maximum value of the ramp signal, and in accordance therewith, the switching transistor is turned on for one or more full periods of the ramp signal.
Abstract translation: 本公开包括用于开关稳压器中的100％占空比的系统和方法。 开关调节器电路包括斜坡发生器以产生具有周期的斜坡信号和用于接收斜坡信号的比较器和误差信号，并且根据其产生调制信号。 在第一操作模式中，斜坡信号增加以与误差信号相交，因此，在斜坡信号的每个周期期间改变开关晶体管的状态。 在第二操作模式中，误差信号增加到斜坡信号的最大值之上，并且根据此，开关晶体管导通一个或多个斜坡信号的整个周期。
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公开(公告)号：US08988059B2
公开(公告)日：2015-03-24
申请号：US13752267
申请日：2013-01-28
Applicant: QUALCOMM Incorporated
Inventor： Joseph D Rutkowski
CPC classification number: H02M3/158 , G05F3/02 , H02J1/00 , H02M1/088 , H02M3/1588 , H02M2001/0032 , H02M2001/0054 , H03K17/122 , Y02B70/1466 , Y02B70/1491
Abstract: Techniques for optimizing the trade-off between minimizing switching losses and minimizing conduction losses in a buck converter. In an aspect, each of a high-side switch and a low-side switch may be implemented as a plurality of parallel-coupled transistors, each transistor having an independently controllable gate voltage, allowing adjustment of the effective transistor size. In response to the target voltage of the buck converter corresponding to a relatively high voltage range, more high-side switch transistors and fewer low-side switch transistors may be selected. Similarly, in response to the target voltage corresponding to a relatively low voltage range, more low-side switch transistors and fewer high-side switch transistors may be selected. In an aspect, the techniques may be applied during a pulse-frequency modulation mode.
Abstract translation: 用于优化在降低转换器中最小化开关损耗和最小化传导损耗之间权衡的技术。 一方面，高侧开关和低侧开关中的每一个可以被实现为多个并联耦合晶体管，每个晶体管具有独立可控的栅极电压，从而允许有效晶体管尺寸的调节。 响应于对应于较高电压范围的降压转换器的目标电压，可以选择更多的高侧开关晶体管和较少的低侧开关晶体管。 类似地，响应于对应于相对低电压范围的目标电压，可以选择更多的低侧开关晶体管和较少的高侧开关晶体管。 在一个方面，可以在脉冲 - 频率调制模式期间应用这些技术。
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