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公开(公告)号：US20140197814A1
公开(公告)日：2014-07-17
申请号：US13740062
申请日：2013-01-11
Applicant: QUALCOMM INCORPORATED
Inventor： Song S. Shi , Pengfei Li , Lennart Karl-Axel Mathe , Yunfei Shi
IPC: G05F3/02
CPC classification number: G05F3/02 , H02M3/155 , H02M3/1582 , H02M2001/008 , H03F1/0238
Abstract: Techniques for generating a boost clock signal for a boost converter from a buck converter clock signal, wherein the boost clock signal has a limited frequency range. In an aspect, the boost clock signal has a maximum frequency determined by Vbst/T, wherein Vbst represents the difference between a target output voltage and a battery voltage, and T represents a predetermined cycle duration. The boost converter may include a pulse insertion block to limit the minimum frequency of the boost clock signal, and a dynamic blanking/delay block to limit the maximum frequency of the boost clock signal. Further techniques are disclosed for generally implementing the minimum frequency limiting and maximum frequency limiting blocks.
Abstract translation: 用于从降压转换器时钟信号产生用于升压转换器的升压时钟信号的技术，其中所述升压时钟信号具有有限的频率范围。 在一方面，升压时钟信号具有由Vbst / T确定的最大频率，其中Vbst表示目标输出电压和电池电压之间的差，T表示预定的周期持续时间。 升压转换器可以包括用于限制升压时钟信号的最小频率的脉冲插入块以及限制升压时钟信号的最大频率的动态消隐/延迟模块。 公开了通常实现最小频率限制和最大频率限制块的其它技术。
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公开(公告)号：US10804854B1
公开(公告)日：2020-10-13
申请号：US16556085
申请日：2019-08-29
Applicant: QUALCOMM Incorporated
Inventor： Moataz Abdelsamie Abdelfattah , Mukesh Bansal , Iulian Mirea , Song Shi , Pengfei Li
Abstract: A tri-level converter provides three levels of power supply to a power amplifier that includes a supply path. The supply path has a first transistor and a first inherent body diode associated with the first transistor, as well as a second transistor and a second inherent body diode associated with the second transistor. A polarity of the second body diode is reversed relative to a polarity of the first body diode. A first driver is configured to drive the first transistor and the first inherent body diode to control a power supply, including a battery supply signal, to an output of the tri-level converter. The tri-level converter is coupled to a switching node.
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公开(公告)号：US11005368B2
公开(公告)日：2021-05-11
申请号：US16573825
申请日：2019-09-17
Applicant: QUALCOMM Incorporated
Inventor： Mukesh Bansal , Pengfei Li , Moataz Abdelsamie Abdelfattah , Iulian Mirea , Song Shi
Abstract: A method for unbalancing a tri-level switching regulator uses hysteretic control when switching across multiple states of the tri-level switching regulator. The method includes determining a battery voltage and an output voltage of the tri-level switching regulator. The method also includes dynamically adjusting at least one of a first hysteretic window of a first hysteretic comparator associated with a second switching state of the tri-level switching regulator and a second hysteretic window of a second hysteretic comparator associated with a first switching state of the tri-level switching regulator based on the battery voltage and the output voltage.
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公开(公告)号：US09372492B2
公开(公告)日：2016-06-21
申请号：US13740062
申请日：2013-01-11
Applicant: QUALCOMM Incorporated
Inventor： Song S Shi , Pengfei Li , Lennart Karl-Axel Mathe , Yunfei Shi
CPC classification number: G05F3/02 , H02M3/155 , H02M3/1582 , H02M2001/008 , H03F1/0238
Abstract: Techniques for generating a boost clock signal for a boost converter from a buck converter clock signal, wherein the boost clock signal has a limited frequency range. In an aspect, the boost clock signal has a maximum frequency determined by Vbst/T, wherein Vbst represents the difference between a target output voltage and a battery voltage, and T represents a predetermined cycle duration. The boost converter may include a pulse insertion block to limit the minimum frequency of the boost clock signal, and a dynamic blanking/delay block to limit the maximum frequency of the boost clock signal. Further techniques are disclosed for generally implementing the minimum frequency limiting and maximum frequency limiting blocks.
Abstract translation: 用于从降压转换器时钟信号产生用于升压转换器的升压时钟信号的技术，其中所述升压时钟信号具有有限的频率范围。 在一方面，升压时钟信号具有由Vbst / T确定的最大频率，其中Vbst表示目标输出电压和电池电压之间的差，T表示预定的周期持续时间。 升压转换器可以包括用于限制升压时钟信号的最小频率的脉冲插入块以及限制升压时钟信号的最大频率的动态消隐/延迟模块。 公开了通常实现最小频率限制和最大频率限制块的其它技术。
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Patent Agency Ranking
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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公开(公告)号：US20140210548A1
公开(公告)日：2014-07-31
申请号：US13752282
申请日：2013-01-28
Applicant: QUALCOMM INCORPORATED
Inventor： Song S. Shi , Pengfei Li , Lennart Karl-Axel Mathe
CPC classification number: H03G1/0005 , H02M1/088 , H02M3/158 , H02M2001/0045 , H02M2001/0058 , Y02B70/1491
Abstract: Techniques for reducing ringing arising from L-C coupling in a boost converter circuit during a transition from a boost ON state to a boost OFF state. In an aspect, during an OFF state of the boost converter circuit, the size of the high-side switch coupling a boost inductor to the load is gradually increased over time. In this manner, the on-resistance of the high-side switch is decreased from a first value to a second (lower) value over time, which advantageously reduces ringing (due to high quality factor or Q) when initially entering the OFF state, while maintaining low conduction losses during the remainder of the OFF state. Further techniques are provided for implementing the high-side switch as a plurality of parallel-coupled transistors.
Abstract translation: 在升压转换电路从升压导通状态转换到升压关断状态时，减少由升压转换器电路中的L-C耦合引起振铃的技术。 在一方面，在升压转换器电路的OFF状态期间，将升压电感器耦合到负载的高侧开关的尺寸随时间逐渐增加。 以这种方式，高边开关的导通电阻随着时间从第一值降低到第二（较低）值，这有利于当初始进入截止状态时减少振铃（由于高品质因数或Q） 同时在关闭状态的剩余期间保持低导通损耗。 提供了用于将高侧开关实现为多个并联耦合晶体管的进一步技术。
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公开(公告)号：US20140210559A1
公开(公告)日：2014-07-31
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
IPC: H03G1/00
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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公开(公告)号：US09537450B2
公开(公告)日：2017-01-03
申请号：US14488114
申请日：2014-09-16
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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公开(公告)号：US09124231B2
公开(公告)日：2015-09-01
申请号：US13752282
申请日：2013-01-28
Applicant: QUALCOMM Incorporated
Inventor： Song S Shi , Pengfei Li , Lennart Karl-Axel Mathe
CPC classification number: H03G1/0005 , H02M1/088 , H02M3/158 , H02M2001/0045 , H02M2001/0058 , Y02B70/1491
Abstract: Techniques for reducing ringing arising from L-C coupling in a boost converter circuit during a transition from a boost ON state to a boost OFF state. In an aspect, during an OFF state of the boost converter circuit, the size of the high-side switch coupling a boost inductor to the load is gradually increased over time. In this manner, the on-resistance of the high-side switch is decreased from a first value to a second (lower) value over time, which advantageously reduces ringing (due to high quality factor or Q) when initially entering the OFF state, while maintaining low conduction losses during the remainder of the OFF state. Further techniques are provided for implementing the high-side switch as a plurality of parallel-coupled transistors.
Abstract translation: 在升压转换电路从升压导通状态转换到升压关断状态时，减少由升压转换器电路中的L-C耦合引起振铃的技术。 在一方面，在升压转换器电路的OFF状态期间，将升压电感器耦合到负载的高侧开关的尺寸随时间逐渐增加。 以这种方式，高边开关的导通电阻随着时间从第一值降低到第二（较低）值，这有利于当初始进入截止状态时减少振铃（由于高品质因数或Q） 同时在关闭状态的剩余期间保持低导通损耗。 提供了用于将高侧开关实现为多个并联耦合晶体管的进一步技术。
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