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    • 4. 发明授权
    • Low-to-medium power single chip digital controlled DC-DC regulator for point-of-load applications
    • 低至中功率单芯片数字控制DC-DC调节器,用于负载点应用
    • US09024606B2
    • 2015-05-05
    • US13332343
    • 2011-12-20
    • Philippe C. AdellBertan BakkalogluBert VermeireTao Liu
    • Philippe C. AdellBertan BakkalogluBert VermeireTao Liu
    • H02M3/157H02M3/158H02M1/00
    • H02M3/1588H02M2001/0009H02M2001/0012Y02B70/1466
    • A DC-DC converter for generating a DC output voltage includes: a digitally controlled pulse width modulator (DPWM) for controlling a switching power stage to supply a varying voltage to an inductor; and a digital voltage feedback circuit for controlling the DPWM in accordance with a feedback voltage corresponding to the DC output voltage, the digital voltage feedback circuit including: a first voltage controlled oscillator for converting the feedback voltage into a first frequency signal and to supply the first frequency signal to a first frequency discriminator; a second voltage controlled oscillator for converting a reference voltage into a second frequency signal and to supply the second frequency signal to a second frequency discriminator; a digital comparator for comparing digital outputs of the first and second frequency discriminators and for outputting a digital feedback signal; and a controller for controlling the DPWM in accordance with the digital feedback signal.
    • 用于产生DC输出电压的DC-DC转换器包括:数字控制脉宽调制器(DPWM),用于控制开关功率级以向电感器提供变化的电压; 以及数字电压反馈电路,用于根据对应于直流输出电压的反馈电压来控制DPWM,所述数字电压反馈电路包括:第一压控振荡器,用于将反馈电压转换为第一频率信号并提供第一 频率信号到第一鉴频器; 第二压控振荡器,用于将参考电压转换为第二频率信号,并将第二频率信号提供给第二频率鉴别器; 数字比较器,用于比较第一和第二鉴频器的数字输出并输出数字反馈信号; 以及用于根据数字反馈信号控制DPWM的控制器。
    • 5. 发明授权
    • Current-steering digital-to-analog converter having a minimum charge injection latch
    • 具有最小电荷注入锁存器的电流转向数模转换器
    • US06992608B2
    • 2006-01-31
    • US10823046
    • 2004-04-13
    • Weibiao ZhangBertan Bakkaloglu
    • Weibiao ZhangBertan Bakkaloglu
    • H03M1/66
    • H03M1/0624H03M1/747
    • A latch architecture for driving unit current cell of a current-steering digital-to-analog converter (DAC) which reduces the drain-source voltage variation of the output current-source transistors and reduces the coupling of unwanted injection of input digital signals as well as clock signals is presented herein. Moreover, this latch helps to achieve lower glitch during code transition with improved dynamic performance. The latch effectively uses the intrinsic RC delay of most transistors within the latch architecture in order to achieve optimal crossing points of complementary control signals. Unwanted input injection or cross-talk is reduced by introducing transistors (904, 906, 932 and 934) that are off during code transitions without compromising the DAC update speed. Conflicts between currently held and new inputs are avoided in an effort to reduce the harmonic distortion. Furthermore, the distortion as a result of the clock signal fed through each transistor in the first and second subcircuit portions cancel each other.
    • 用于驱动电流转向数模转换器(DAC)的单元电流单元的锁存架构,其减小输出电流源晶体管的漏源电压变化,并减少输入数字信号的不期望的注入的耦合 因为这里呈现时钟信号。 此外,该锁存器有助于在代码转换期间实现较低的毛刺,并提高动态性能。 锁存器有效地使用锁存器架构内大多数晶体管的固有RC延迟,以实现互补控制信号的最佳交叉点。 通过引入在代码转换期间关闭而不损害DAC更新速度的晶体管(904,906,932和934)来减少不需要的输入注入或串扰。 为了减少谐波失真,避免了当前持有的和新的输入之间的冲突。 此外,作为通过第一和第二子电路中的每个晶体管馈送的时钟信号的结果的失真彼此抵消。
    • 7. 发明申请
    • Systems and Methods for Analog to Digital Converter Charge Storage Device Measurement
    • 用于模数转换器充电存储器件测量的系统和方法
    • US20120112941A1
    • 2012-05-10
    • US12939486
    • 2010-11-04
    • Umar Jameer LylesBertan BakkalogluBrian P. Lum-Shue-Chan
    • Umar Jameer LylesBertan BakkalogluBrian P. Lum-Shue-Chan
    • H03M3/04
    • H03M1/124G01R31/3658H01M10/482H03M3/494
    • Systems and methods for analog to digital conversion charge storage device measurement are presented. In multi-cell charge storage device monitoring systems, accurate measurement of cell voltages is used for protection of the multi-cell device. The disclosed cell referenced solution converts the cell voltage to a digital representation referenced at the cell voltage. The digital representation referenced to the cell voltage is then level shifted to a ground referenced signal suitable for digital post processing. This processing may be used for fault detection of over-voltage, under-voltage, open cell, and similar fault conditions and cell capacity measurements. An example embodiment implements a sigma delta modulator to perform the signal transformation from analog to digital. The disclosed systems and methods may be differential and stackable for multiple cells.
    • 提出了模数转换电荷存储器件测量的系统和方法。 在多单元电荷存储装置监视系统中,使用单元电压的精确测量来保护多单元装置。 所公开的电池参考解决方案将电池电压转换为以电池电压参考的数字表示。 然后将电池电压参考的数字表示电平移位到适合于数字后处理的地参考信号。 该处理可用于过电压,欠压,开放电池以及类似故障条件和电池容量测量的故障检测。 示例性实施例实现了Σ-Δ调制器来执行从模拟到数字的信号变换。 所公开的系统和方法可以是多个小区的差分和可堆叠的。