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    Apparatus and method for low voltage reference and oscillator
    3.
    发明授权
    Apparatus and method for low voltage reference and oscillator 有权
    低电压基准和振荡器的装置和方法

    公开(公告)号：US09436205B2

    公开(公告)日：2016-09-06

    申请号：US14166904

    申请日：2014-01-29

    申请人： Dialog Semiconductor GmbH

    发明人： Guillaume De Cremoux

    IPC分类号： H03L7/099 ,  G05F3/26 ,  H02M3/18 ,  H03K3/0231 ,  H02M3/158 ,  G05F3/30 ,  H03K3/353

    CPC分类号： G05F3/262 ,  G05F3/30 ,  H02M3/1588 ,  H02M3/18 ,  H03K3/0231 ,  H03K3/353

    摘要： An apparatus and method for a voltage reference circuit and oscillator which operates for a low voltage power supply. The voltage reference circuit is used in an “always on” mode of operation, and have low power usage. The operational range is 1.1V to 3.6 V, and must allow for sub-bandgap voltage conditions as well as voltage tolerant for higher voltages. The circuit minimizes the number of current branches by avoiding complexity of operational amplifiers and comparator networks. The circuit avoids stacking of more than 2 devices to allow for low voltage operation. The voltage reference circuit between a power supply node and a ground node and configured for generating a reference voltage comprises of a current mirror function providing matching and sourcing network branches, a voltage generator network sourced from a current mirror providing a base-emitter voltage, a current drive function network electrically sourced from a current mirror function, and an output network function sourced from a current mirror providing a voltage reference output voltage. An oscillator circuit between a power supply node and a ground node and configured for generating an oscillating signal comprises of a current mirror function providing matching and sourcing network branches, a current drive function network electrically sourced from said current mirror function, an output network function sourced from said current mirror providing a capacitors, current sources, a capacitor providing charge storage, and output network function, and, a feedback loop network providing reset function.

    摘要翻译： 一种用于低电压电源的电压参考电路和振荡器的装置和方法。 电压基准电路采用“始终开启”工作模式，功耗低。 工作范围为1.1V至3.6V，并且必须允许子带隙电压条件以及更高电压的电压容限。 该电路通过避免运算放大器和比较器网络的复杂性来最小化电流分支的数量。 该电路避免了多于2个器件的堆叠以允许低电压操作。 电源节点和接地节点之间的电压参考电路，用于产生参考电压包括提供匹配和采购网络分支的电流镜功能，源自提供基极 - 发射极电压的电流镜的电压发生器网络， 电流驱动功能网络电流来自电流镜功能，以及源自电流镜的输出网络功能，提供电压参考输出电压。 电源节点和接地节点之间的振荡器电路，用于产生振荡信号，包括提供匹配和采样网络分支的电流镜功能，电流源自所述电流镜功能的电流驱动功能网络，源自输出网络功能 从所述电流镜提供电容器，电流源，提供电荷存储的电容器和输出网络功能，以及提供复位功能的反馈环路网络。

    Adjustable low spurious signal DC-DC converter
    4.
    发明授权
    Adjustable low spurious signal DC-DC converter 有权
    可调式低杂散信号DC-DC转换器

    公开(公告)号：US06314008B1

    公开(公告)日：2001-11-06

    申请号：US09688548

    申请日：2000-10-16

    申请人： Jianwen Bao ,  John van Saders ,  Norman Scheinberg

    发明人： Jianwen Bao ,  John van Saders ,  Norman Scheinberg

    IPC分类号： H02M114

    CPC分类号： H02M1/14 ,  H02M3/07 ,  H02M3/18

    摘要： The present invention uses an AC signal and an external DC control voltage to generate a plurality of levels of output DC voltages. The level of the output voltage is determined by the DC control voltage and has the opposite polarity. The invention is preferably implemented as a balanced circuit, which generates spurious signals at even harmonics of the AC frequency signal. The spurious signals can then be filtered out using a low-pass filter.

    摘要翻译： 本发明使用AC信号和外部DC控制电压来产生多个输出直流电压电平。 输出电压的电平由直流控制电压决定，极性相反。 本发明优选地被实现为平衡电路，其在AC频率信号的偶次谐波处产生杂散信号。 然后可以使用低通滤波器过滤出杂散信号。

    Buck and boost switched capacitor gain stage with optional shared rest state
    5.
    发明授权
    Buck and boost switched capacitor gain stage with optional shared rest state 有权
    降压和升压开关电容器增益级，具有可选的共享静止状态

    公开(公告)号：US06198645B1

    公开(公告)日：2001-03-06

    申请号：US09322264

    申请日：1999-05-28

    申请人： Jeff Kotowski ,  William J. McIntyre

    发明人： Jeff Kotowski ,  William J. McIntyre

    IPC分类号： H02M318

    CPC分类号： H02M3/18 ,  H02M3/07 ,  H02M2003/072

    摘要： A structure and process are provided for converting DC-DC voltages, which allows both buck and boost conversion utilizing a single switched capacitor array. In one embodiment of this invention, the switched capacitor array comprises multiple gain blocks, where the gain blocks are identical and stacked upon each other. The switches and capacitors are configured so that various combinations of series and parallel capacitor connections are possible, and thus both buck and boost conversions are attainable with one switched capacitor array. Other embodiments of the present invention use multiple gain blocks, configured such that the capacitor in each gain block can be connected to ground. As a result, a single charge state for a range of desired gains can be configured for use with a shared or common rest state, i.e., a capacitor configuration which is the same regardless of the desired gain. In the charge state, selected capacitors are configured in series for the desired gain setting, while in the shared rest state, all the capacitors are configured in parallel from the output to the input. Because a shared rest state is used, the correct charge is always transferred at the desired gain with a single switched capacitor array.

    摘要翻译： 提供了一种用于转换DC-DC电压的结构和过程，其允许使用单个开关电容器阵列的降压和升压转换。 在本发明的一个实施例中，开关电容器阵列包括多个增益块，其中增益块彼此相同并堆叠。 开关和电容器被配置为使得串联和并联电容器连接的各种组合是可能的，因此可以通过一个开关电容器阵列实现降压和升压转换。 本发明的其他实施例使用多个增益块，其被配置为使得每个增益块中的电容器可以连接到地。 结果，对于期望增益范围的单个充电状态可以被配置为用于共享或共用静止状态，即不管期望增益如何，电容器配置是相同的。 在充电状态下，所选择的电容器被串联配置用于期望的增益设置，而在共享静止状态下，所有电容器从输出到输入并联配置。 由于使用共享休眠状态，所以正确的电荷总是以所需的增益转换为单个开关电容器阵列。