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    • 4. 发明申请
    • DYNAMIC FREQUENCY SCALING OF A SWITCHED MODE POWER SUPPLY
    • 开关电源的动态频率范围
    • WO2009123955A1
    • 2009-10-08
    • PCT/US2009/038753
    • 2009-03-30
    • QUALCOMM INCORPORATEDSAHA, JuhiSHEN, Ching, ChangPALS, Timothy, PaulLAU, Soon-Seng
    • SAHA, JuhiSHEN, Ching, ChangPALS, Timothy, PaulLAU, Soon-Seng
    • H04B15/04
    • H02M3/156
    • System(s) and method(s) are provided for dynamically scaling switching frequencies and clock sources of switched mode power supplies (SMPSs) in a mobile station. Switching frequency is scaled to an optimal value in response to at least one of (i) a change in mode of operation for wireless communication employed by the mobile station, an additional mode of operation is triggered, (ii) a change in operation conditions of a set of loads associated with functionality of the mobile is determined, or (iii) an LO spur set-off by a SMPS in the presence of an interference signal with a frequency splitting from an operational band that matches the SMPS frequency or at least one of its harmonics. Switching frequencies can be selected from a lookup table, or through an analysis of switching frequencies available to the mobile and operational criteria. A set of clock sources can provide an ensemble of switching frequencies.
    • 提供了一种或多种系统和方法,用于在移动台中动态地缩放交换模式电源(SMPS)的开关频率和时钟源。 响应于(i)移动台采用的无线通信的操作模式的变化中的至少一个,切换频率被缩放到最佳值,触发附加操作模式,(ii)操作条件的变化 确定与移动台的功能相关联的一组负载,或者(iii)在存在来自与SMPS频率匹配的操作频带的频率分割的干扰信号的情况下,由SMPS发出的LO引导断开,或至少一个 的谐波。 切换频率可以从查找表中选择,也可以通过分析可用于移动和操作标准的切换频率。 一组时钟源可以提供开关频率的集合。