公开(公告)号：US20140111276A1

公开(公告)日：2014-04-24

申请号：US13659667

申请日：2012-10-24

Applicant: QUALCOMM INCORPORATED

Inventor： Lennart Karl-Axel Mathe ,  Song Stone Shi ,  Yunfei Shi

IPC: H03G99/00

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 for a boost converter, wherein the enable signal is turned on in response to detecting that a sum of a first headroom voltage and an enable peak of a tracking supply voltage is greater than an amplifier supply voltage of the ET system. The enable signal may be turned on for a predetermined enable on duration. In another aspect, a target generation block is provided to generate a target voltage for the boost converter, wherein the target voltage comprises the sum of a second headroom voltage and a target peak of the tracking supply voltage.

Abstract translation: 用于控制包络跟踪（ET）系统中升压转换器操作的技术。 在一方面中，提供使能生成块以产生用于升压转换器的使能信号，其中响应于检测到第一余量电压和跟踪电源电压的使能峰值之和更大而导通使能信号 比ET系统的放大器电源电压高。 使能信号可以接通预定使能持续时间。 在另一方面，提供目标产生模块以产生升压转换器的目标电压，其中目标电压包括第二余量电压和跟踪电源电压的目标峰值之和。

公开(公告)号：US20140111170A1

公开(公告)日：2014-04-24

申请号：US13659682

申请日：2012-10-24

Applicant: QUALCOMM INCORPORATED

Inventor： Song Stone Shi ,  Lennart Karl-Axel Mathe ,  Yunfel Shi

IPC: G05F1/10

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 controlling transistor switches of the boost converter 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.

Abstract translation: 用于升压转换器闭环控制的简单有效的技术。 在一方面，电流前馈（CFF）操作模式包括向控制逻辑块提供电流信息，所述控制逻辑块控制升压转换器的晶体管开关，以有利地平滑存在于系统的闭环控制中的信号。 在另一方面，修改的峰值电流（MPC）操作模式包括基于峰值电流操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。 提供用于确定逻辑块的平均当前信息的其它技术。