公开(公告)号：WO2014066697A1

公开(公告)日：2014-05-01

申请号：PCT/US2013/066704

申请日：2013-10-24

Applicant: QUALCOMM INCORPORATED

Inventor： SHI, Song Stone ,  MATHE, Lennart Karl-Axel ,  SHI, Yunfei

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/1588 ,  H02M3/156 ,  H02M3/157 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: Simple and efficient techniques for closed loop control of a boost converter. In an aspect, a current feed-forward, CFF, mode of operation includes providing current information to a control logic block (210) controlling transistor switches (ΝΙ,ΡΙ) of the boost converter (200) to advantageously smooth the signals present in the closed loop control of the system. In another aspect, a modified peak current, MPC, mode of operation includes providing a simplified control mechanism based on a peak current mode of operation. Both CFF mode and MPC mode may share similar circuit elements, allowing a single implementation to selectively implement either of these modes of control. Further techniques are provided for determining average current information for the logic block (210).

Abstract translation: 用于升压转换器闭环控制的简单有效的技术。 在一个方面，当前的前馈CFF操作模式包括向控制逻辑块（210）提供电流信息，以控制升压转换器（200）的晶体管开关（＆Ngr; Igr，＆Rgr; Igr）以有利地 平滑系统闭环控制中存在的信号。 在另一方面，修改的峰值电流MPC的操作模式包括基于峰值电流工作模式提供简化的控制机制。 CFF模式和MPC模式都可以共享类似的电路元件，允许单个实现选择性地实现这些控制模式。 提供了用于确定逻辑块（210）的平均当前信息的进一步的技术。

公开(公告)号：WO2014066694A1

公开(公告)日：2014-05-01

申请号：PCT/US2013/066701

申请日：2013-10-24

Applicant: QUALCOMM INCORPORATED

Inventor： MATHE, Lennart Karl-Axel ,  SHI, Song Stone ,  SHI, Yunfei

IPC: H03F1/02

CPC classification number: H03F1/0238 ,  H03F2200/102 ,  H03F2200/435

Abstract: Techniques for controlling boost converter operation in an envelope tracking (ET) system. In an aspect, an enable generation block is provided to generate an enable signal (Ven) for a boost converter (110), wherein the enable signal (Ven) is turned on in response to detecting that a sum of a first headroom voltage and an enable peak of a tracking supply voltage (Vamp) is greater than an amplifier supply voltage (VDD_Amp) of the ET system. The enable signal (Ven) may be turned on for a predetermined enable on duration. In another aspect, a target generation block is provided to generate a target voltage (Vtarget) for the boost converter (110), wherein the target voltage (Vtarget) comprises the sum of a second headroom voltage and a target peak of the tracking supply voltage (Vamp).

Abstract translation: 用于控制包络跟踪（ET）系统中升压转换器操作的技术。 在一方面，提供使能生成块以产生用于升压转换器（110）的使能信号（Ven），其中响应于检测到第一余量电压和 使跟踪电源电压（Vamp）的峰值大于ET系统的放大器电源电压（VDD_Amp）。 使能信号（Ven）可以接通预定使能持续时间。 在另一方面，提供目标产生块以产生用于升压转换器（110）的目标电压（Vtarget），其中目标电压（Vtarget）包括第二余量电压和跟踪电源电压的目标峰值之和 （鞋面）。

公开(公告)号：WO2014197399A1

公开(公告)日：2014-12-11

申请号：PCT/US2014/040561

申请日：2014-06-02

Applicant: QUALCOMM INCORPORATED

Inventor： MATHE, Lennart Karl-Axel ,  SHI, Yunfei

IPC: H03F1/02 ,  H03F3/195

CPC classification number: H03F1/02 ,  H03F1/0222 ,  H03F1/0227 ,  H03F3/195 ,  H03F2200/102 ,  H03F2200/432 ,  H03F2200/435 ,  H03F2200/504

Abstract: In an exemplary design, an apparatus (100) includes an amplifier (170), a boost converter (180), and a boost controller (190). The amplifier (170) receives an envelope signal (Venv) and a variable boosted supply voltage (Vboost) and provides an output voltage (Vout) and an output current (lout). The boost converter (180) receives a power supply voltage (Vbat) and at least one signal determined based on the envelope signal (Venv) and generates the variable boosted supply voltage (Vboost) based on the power supply voltage (Vbat) and the at least one signal. The boost controller (190) generates the at least one signal (e.g., an enable signal and/or a threshold voltage) for the boost converter (180) based on the envelope signal (Venv) and/or the output voltage (Vout). The boost converter (180) generates the variable boosted supply voltage (Vboost) based on the power supply voltage (Vbat) and the threshold voltage.

Abstract translation: 在示例性设计中，装置（100）包括放大器（170），升压转换器（180）和升压控制器（190）。 放大器（170）接收包络信号（Venv）和可变提升电源电压（Vboost），并提供输出电压（Vout）和输出电流（lout）。 升压转换器（180）接收电源电压（Vbat）和基于包络信号（Venv）确定的至少一个信号，并且基于电源电压（Vbat）产生可变升压电源电压（Vboost） 至少一个信号。 升压控制器（190）基于包络信号（Venv）和/或输出电压（Vout）产生用于升压转换器（180）的至少一个信号（例如，使能信号和/或阈值电压）。 升压转换器（180）基于电源电压（Vbat）和阈值电压产生可变升压的电源电压（Vboost）。

公开(公告)号：WO2014116608A2

公开(公告)日：2014-07-31

申请号：PCT/US2014/012393

申请日：2014-01-21

Applicant: QUALCOMM INCORPORATED

Inventor： MATHE, Lennart Karl-Axel ,  LI, Pengfei ,  SHI, Song ,  SHI, Yunfei ,  RUTKOWSKI, Joseph

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: 动态生成包络跟踪系统的净空电压的技术。 在一个方面，当来自功率放大器（PA）的信号指示PA余量不足时，初始净空电压被更新。 初始净空电压可以被更新为包括初始电压加上缺陷电压加上裕度的运行净空电压。 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。

公开(公告)号：WO2014110457A1

公开(公告)日：2014-07-17

申请号：PCT/US2014/011164

申请日：2014-01-10

Applicant: QUALCOMM INCORPORATED

Inventor： SHI, Song S. ,  LI, Pengfei ,  MATHE, Lennart Karl-Axel ,  SHI, Yunfei

IPC: H03F1/02 ,  H02M3/155

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。