公开(公告)号：US08502474B2

公开(公告)日：2013-08-06

申请号：US13249158

申请日：2011-09-29

申请人： Jeff Kotowski ,  Charles Cai ,  Ranajit Ghoman

发明人： Jeff Kotowski ,  Charles Cai ,  Ranajit Ghoman

IPC分类号： G05F1/00

CPC分类号： H05B33/0815 ,  H02M1/4225 ,  Y02B20/346 ,  Y02B70/126

摘要： A primary side PFC driver circuit is disclosed that includes a switch control circuit for commanding a switch to allow an inductor coupled to an output load (e.g., LEDs) to transfer energy provided by an input voltage source. The switch control circuit provides two signals for commanding the switch. A first signal having a first frequency, with a duty cycle in proportion to the input voltage amplitude, commands the switch to allow the average input current to be proportional to the input voltage amplitude. A second signal having a second frequency higher than the first frequency pulses the output load with substantially constant current pulses based on a value of the first signal (e.g., while the first signal is high). The current pulses produce a substantially constant current in the output load.

摘要翻译： 公开了一种初级侧PFC驱动器电路，其包括用于命令开关允许耦合到输出负载（例如，LED）的电感器传递由输入电压源提供的能量的开关控制电路。 开关控制电路提供两个指示开关的信号。 具有与输入电压幅度成比例的占空比的具有第一频率的第一信号命令开关允许平均输入电流与输入电压幅度成正比。 具有高于第一频率的第二频率的第二信号基于第一信号的值（例如，当第一信号为高时）以基本上恒定的电流脉冲来脉冲输出负载。 电流脉冲在输出负载中产生基本恒定的电流。

公开(公告)号：US20130099697A1

公开(公告)日：2013-04-25

申请号：US13281366

申请日：2011-10-25

申请人： Sean S. Chen ,  Jeff Kotowski ,  Timothy James Herklots

发明人： Sean S. Chen ,  Jeff Kotowski ,  Timothy James Herklots

IPC分类号： H05B37/02

CPC分类号： G09G3/342 ,  G09G2320/0233 ,  G09G2320/064

摘要： The disclosed multi-channel driver equalizer circuit matches currents in multiple strings of illumination devices at low current levels by using an analog equalizer to sequentially couple the output of a reference amplifier in series with each current source amplifier in a current limit loop of the driver equalizer circuit to correct the offsets of the current source amplifiers, resulting in the matching of string currents on average.

摘要翻译： 所公开的多通道驱动均衡器电路通过使用模拟均衡器在多个照明装置串中的电流匹配电流，所述模拟均衡器在驱动器均衡器的限流回路中将参考放大器的输出与每个电流源放大器串联耦合 电路来校正电流源放大器的偏移，导致串电流的匹配平均。

公开(公告)号：US07109804B2

公开(公告)日：2006-09-19

申请号：US10834326

申请日：2004-04-27

申请人： Urs H. Mader ,  Yvonne Ko ,  Franco Cocetta ,  Jeff Kotowski ,  Xiaoying Yu

发明人： Urs H. Mader ,  Yvonne Ko ,  Franco Cocetta ,  Jeff Kotowski ,  Xiaoying Yu

IPC分类号： H03L7/00 ,  H03B5/10

CPC分类号： H03K4/502

摘要： A relaxation oscillator for generating an oscillator output signal having a predetermined frequency. The relaxation oscillator includes an interleaved charge pump for providing a restoring charge to an integrator in response to at least one charge pump control signal. The relaxation oscillator further includes an integrator having an integrator input connected to the current summing node. The integrator is adapted to produce an integrator output signal having the predetermined frequency at an integrator output. A comparator having an input connected to the integrator output is adapted to generate the oscillator output signal having the predetermined frequency in response to the integrator output signal.

摘要翻译： 一种放大振荡器，用于产生具有预定频率的振荡器输出信号。 弛豫振荡器包括交错电荷泵，用于响应于至少一个电荷泵控制信号向积分器提供恢复电荷。 弛豫振荡器还包括具有连接到当前求和节点的积分器输入的积分器。 积分器适于在积分器输出处产生具有预定频率的积分器输出信号。 具有连接到积分器输出的输入的比较器适于响应于积分器输出信号产生具有预定频率的振荡器输出信号。

公开(公告)号：US20150235552A1

公开(公告)日：2015-08-20

申请号：US14184724

申请日：2014-02-20

申请人： Charles Jun Cai ,  Jeff Kotowski

发明人： Charles Jun Cai ,  Jeff Kotowski

IPC分类号： G08C19/00 ,  H04B3/54

CPC分类号： H04B3/54

摘要： Embodiments disclosed herein describe an AC power line instruction system which can control the operation of electrical device through the AC power line. The AC power line instruction system comprises a modulator to modulate the timing of the leading edges of the voltage of the AC power line to transmit a command signal, and a receiver to measure the timing of the leading edges of the voltage of the AC power line, to decode the command signal based on the relationship between the timing of the leading edges, and the operation of the electrical device can be controlled by the command signal decoded by the receiver.

摘要翻译： 本文公开的实施例描述了可以通过AC电力线控制电气设备的操作的AC电力线指令系统。 AC电力线指令系统包括调制器，用于调制AC电力线的电压的前沿的定时以发送命令信号;以及接收器，用于测量AC电力线的电压的前沿的定时 ，可以通过由接收机解码的命令信号来控制基于前沿的定时之间的关系的指令信号和电气设备的操作。

公开(公告)号：US08704589B2

公开(公告)日：2014-04-22

申请号：US13595770

申请日：2012-08-27

申请人： Jeff Kotowski ,  Andre Gunther

发明人： Jeff Kotowski ,  Andre Gunther

IPC分类号： G05F1/10

CPC分类号： G05F3/30

摘要： A reference voltage circuit corrects for bandgap voltage shifts induced during fabrication. The reference voltage circuit generates a reference voltage using first and second base-emitter pairs. The reference voltage circuit sums the voltage across the first base-emitter pair with a difference voltage. During a first time period, the difference voltage is the voltage across the first base-emitter pair minus the voltage across the second base-emitter pair, and during a second time period, the difference voltage is the voltage across the second base-emitter pair minus the voltage across the first base-emitter pair.

摘要翻译： 参考电压电路校正制造期间引起的带隙电压偏移。 参考电压电路使用第一和第二基极 - 发射极对产生参考电压。 参考电压电路将第一基极 - 发射极对之间的电压与差分电压相加。 在第一时间段期间，差值电压是第一基极 - 发射极对上的电压减去第二基极 - 发射极对两端的电压，而在第二时间段期间，差值电压是第二基极 - 发射极对 减去第一个基极 - 发射极对的电压。

公开(公告)号：US20130147358A1

公开(公告)日：2013-06-13

申请号：US13314069

申请日：2011-12-07

申请人： Jeff Kotowski ,  Timothy James Herklots ,  Charles Cai

发明人： Jeff Kotowski ,  Timothy James Herklots ,  Charles Cai

IPC分类号： H05B37/02

CPC分类号： H05B33/0818

摘要： The disclosed implementations utilize the voltage drop inherent in the device string to power a device control IC. In some implementations, current is drawn from the bottom of the device string and applied to a voltage supply pin of the device control IC. In some implementations, current is drawn from some other location in the device string (e.g., near the bottom or midpoint of the device string) using a switch. In some implementations, current is drawn from near the bottom and the bottom of the device string at different times, such that less current is drawn from the bottom of the device string as the duty cycle of the device string increases and more current is drawn from near the bottom of the device string as the duty cycle of the device string increases.

摘要翻译： 所公开的实现使用设备串中固有的电压降来为器件控制IC供电。 在一些实施方式中，电流从器件串的底部抽出并施加到器件控制IC的电压引脚。 在一些实施方式中，使用开关从设备串中的某个其他位置（例如，设备串的底部或中点附近）绘出电流。 在一些实施方式中，在不同时间从设备串的底部和底部接近电流，从而当器件串的占空比增加并且从 靠近设备串的底部，随着设备串的占空比增加。

公开(公告)号：US20130113381A1

公开(公告)日：2013-05-09

申请号：US13291943

申请日：2011-11-08

申请人： Charles Cai ,  Jeff Kotowski ,  Timothy James Herklots

发明人： Charles Cai ,  Jeff Kotowski ,  Timothy James Herklots

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0827

摘要： A color correcting device driver is configured to vary the equivalent current into light emitting elements (e.g., LEDs) with the frequency of the AC input current (e.g., 120 Hz). In implementations that include a fly-back controller with a power factor correction (PFC) controller on the primary side, the color correcting device driver performs the method of: 1) turning on the loads (e.g., white and CA strings of LEDs); 2) determining if the voltage supplied to the loads has dropped by a first threshold amount; 3) turning off the loads; and 4) determining if the voltage supplied to loads has recovered by a second threshold amount (or waiting for a fixed amount of time). The method is repeated. In implementations that do not include a PFC controller on the primary side, the color correcting device driver can create a pulse width modulated (PWM) signal.

摘要翻译： 颜色校正装置驱动器被配置为将等效电流改变为具有AC输入电流（例如，120Hz）的频率的发光元件（例如，LED）。 在包括在初级侧具有功率因数校正（PFC）控制器的回扫控制器的实施方案中，色彩校正装置驱动器执行以下方法：1）打开负载（例如，LED的白色和CA串）; 2）确定提供给负载的电压是否下降了第一阈值; 3）关闭负载; 以及4）确定提供给负载的电压是否恢复了第二阈值（或等待固定的时间量）。 重复该方法。 在不包括初级侧的PFC控制器的实现中，颜色校正装置驱动器可以创建脉宽调制（PWM）信号。

公开(公告)号：US20050237118A1

公开(公告)日：2005-10-27

申请号：US10834326

申请日：2004-04-27

申请人： Urs Mader ,  Yvonne Ko ,  Franco Cocetta ,  Jeff Kotowski ,  Xiaoying Yu

发明人： Urs Mader ,  Yvonne Ko ,  Franco Cocetta ,  Jeff Kotowski ,  Xiaoying Yu

IPC分类号： H03K4/502 ,  H03L7/00

CPC分类号： H03K4/502

摘要： A relaxation oscillator for generating an oscillator output signal having a predetermined frequency. The relaxation oscillator includes an interleaved charge pump for providing a restoring charge to an integrator in response to at least one charge pump control signal. The relaxation oscillator further includes an integrator having an integrator input connected to the current summing node. The integrator is adapted to produce an integrator output signal having the predetermined frequency at an integrator output. A comparator having an input connected to the integrator output is adapted to generate the oscillator output signal having the predetermined frequency in response to the integrator output signal.

摘要翻译： 一种用于产生具有预定频率的振荡器输出信号的放大振荡器。 弛豫振荡器包括交错电荷泵，用于响应于至少一个电荷泵控制信号向积分器提供恢复电荷。 弛豫振荡器还包括具有连接到当前求和节点的积分器输入的积分器。 积分器适于在积分器输出处产生具有预定频率的积分器输出信号。 具有连接到积分器输出的输入的比较器适于响应于积分器输出信号产生具有预定频率的振荡器输出信号。

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。

公开(公告)号：US6055168A

公开(公告)日：2000-04-25

申请号：US322322

申请日：1999-05-28

申请人： Jeff Kotowski ,  William J. McIntyre ,  John P. Parry

发明人： Jeff Kotowski ,  William J. McIntyre ,  John P. Parry

IPC分类号： H02M3/07 ,  H02M3/18

CPC分类号： H02M3/07

摘要： A structure and method are provided for converting unregulated DC voltages to regulated DC voltages using pulse frequency modulation (PFM) and a switched capacitor array capable of multiple gains, where gain selection is based on the output voltage. The selected gain is maintained at or above a minimum gain determined from the input voltage. A regulated voltage, which is equal to or greater than a desired output voltage, is thus available to the load over a wider range of inputs and with greater conversion efficiency.

摘要翻译： 提供了一种结构和方法，用于使用脉冲频率调制（PFM）和能够获得多个增益的开关电容阵列将未调节的直流电压转换成稳压的直流电压，其中增益选择基于输出电压。 所选择的增益保持在等于或高于从输入电压确定的最小增益。 因此，等于或大于期望的输出电压的调节电压可在更宽范围的输入端上具有负载并具有更高的转换效率。