公开(公告)号：US08569972B2

公开(公告)日：2013-10-29

申请号：US12858164

申请日：2010-08-17

Applicant: John L. Melanson

Inventor： John L. Melanson

IPC: H05B37/02

CPC classification number: H05B33/0848 ,  H05B33/0815 ,  H05B33/0845 ,  H05B37/02

Abstract: A lighting system includes a dimmer output voltage emulator to cause a power converter interface circuit to generate an emulated dimmer output voltage. In at least one embodiment, the emulated dimmer output voltage corresponds to an actual dimmer output voltage but is unaffected by non-idealities in the dimmer output voltage, such as premature shut-down of a triac-based dimmer. By generating an emulated dimmer output voltage, the energy delivered to a load, such as a lamp, corresponds to a dimming level setting.

Abstract translation: 照明系统包括调光器输出电压仿真器，以使电力转换器接口电路产生模拟调光器输出电压。 在至少一个实施例中，模拟调光器输出电压对应于实际的调光输出电压，但不受调光输出电压中的非理想性的影响，例如基于三端双向可控硅的调光器的过早关断。 通过产生模拟调光器输出电压，传送到诸如灯的负载的能量对应于调光电平设置。

公开(公告)号：US08552893B1

公开(公告)日：2013-10-08

申请号：US13289806

申请日：2011-11-04

Applicant: Mohit Sood ,  Michael Allan Kost

Inventor： Mohit Sood ,  Michael Allan Kost

IPC: H03M3/00

CPC classification number: H02M3/157 ,  H02M1/4225 ,  H02M2001/0012 ,  H03M3/476 ,  Y02B70/126

Abstract: A control system provides a control signal to a nonlinear plant that generates a response signal responsive to the control signal. The control system includes a detector that detects a predetermined value of a plant quantity, valley switching logic, coupled to the detector, to change a state of a plant switch when the plant quantity is minimized, and a pulse-width modulator, coupled to the valley switching logic, to generate a control signal that controls the plant switch. The valley switching logic includes a nonlinear delta-sigma modulator that compensates for an error in a plant response signal by adjusting the duration of an on-time of a plant switch to cause an average value of the plant response signal to converge toward a target signal value.

Abstract translation: 控制系统向非线性设备提供响应于控制信号产生响应信号的控制信号。 所述控制系统包括检测器，所述检测器检测耦合到所述检测器的植物数量的预定值，谷底切换逻辑，以在植物数量最小化时改变植物开关的状态;以及脉冲宽度调制器， 谷切换逻辑，以产生控制工厂开关的控制信号。 谷切换逻辑包括非线性Δ-Σ调制器，其通过调整工厂开关的接通时间来补偿工厂响应信号中的误差，以使工厂响应信号的平均值朝向目标信号收敛 值。

公开(公告)号：US20130197839A1

公开(公告)日：2013-08-01

申请号：US13739909

申请日：2013-01-11

Applicant: CIRRUS LOGIC, INC.

Inventor： Bala Vishnu Shankar Rao ,  Roderick D. Holley, II

IPC: G01R25/00

CPC classification number: G01R25/00 ,  G01R29/18

Abstract: A system and method utilize multiple, asynchronous, voltage isolated integrated power data circuits (IPDCs) to respectively determine one or more power parameters of a multi-phase power distribution system. In at least one embodiment, the power parameters represent differences between voltage phases of a multi-phase power distribution system. In at least one embodiment, the IPDCs each sense a voltage or current from a single phase of a three-phase power distribution system. Additionally, the IPDCs are electrically isolated from each other and, thus, in at least one embodiment, can utilize voltage divider or shunt resistor sensing without being subject to high voltages representative of the difference between voltage phases. Additionally, in at least one embodiment, each of the IPDCs utilizes a separate clock signal to determine phase sequence and phase angle deltas of one or more three phase voltages of the three-phase power distribution system.

Abstract translation: 一种系统和方法利用多个异步电压隔离集成电力数据电路（IPDC）来分别确定多相配电系统的一个或多个功率参数。 在至少一个实施例中，功率参数表示多相配电系统的电压相位之间的差异。 在至少一个实施例中，IPDC各自感测来自三相配电系统的单相的电压或电流。 此外，IPDC彼此电隔离，并且因此在至少一个实施例中可以利用分压器或分流电阻器感测，而不受代表电压相位之间的差异的高电压。 另外，在至少一个实施例中，每个IPDC利用单独的时钟信号来确定三相配电系统的一个或多个三相电压的相序和相位角增益。

公开(公告)号：US20130162307A1

公开(公告)日：2013-06-27

申请号：US13692636

申请日：2012-12-03

Applicant: Cirrus Logic, Inc.

Inventor： Anindya Bhattacharya ,  John Melanson

IPC: H03K5/12

CPC classification number: B41J2/04541 ,  B41J2/04548 ,  B41J2/0455 ,  B41J2/04581 ,  H03K4/063 ,  H03K5/12

Abstract: A capacitive load drive circuit may comprise a high current drive amplifier configured to be coupled to a capacitive load during a high current ramp up of the voltage across the capacitive load to a cut off voltage; a low current drive amplifier configured to be connected to the capacitive load during a low current ramp up of the voltage across the capacitive load, from the cut off voltage to a maximum voltage across the capacitive load; and the high current drive amplifier configured to be connected to the capacitive load during a high current ramp down of the voltage across the capacitive load. The low current drive amplifier may be connected to the capacitive load during a period of steady state of the voltage across the capacitive load, intermediate the low current ramp up and the high current ramp down.

Abstract translation: 容性负载驱动电路可以包括高电流驱动放大器，其被配置为在跨过容性负载的电压的高电流斜坡上升到截止电压时耦合到电容性负载; 低电流驱动放大器被配置为在跨过容性负载的电压的低电流斜升期间从截止电压到跨过容性负载的最大电压连接到电容性负载; 以及高电流驱动放大器，被配置为在跨过容性负载的电压的高电流斜降期间连接到电容性负载。 在电容负载两端的电压稳定期间，低电流驱动放大器可以连接到电容性负载，低电平斜坡上升和高电流斜坡下降。

公开(公告)号：US08447050B2

公开(公告)日：2013-05-21

申请号：US12909262

申请日：2010-10-21

Applicant: John L. Melanson ,  Xiaofan Fei ,  Johann G. Gaboriau ,  Steven Green ,  Jason P. Rhode ,  Eric Walburger ,  Wilson E. Taylor, Jr.

Inventor： John L. Melanson ,  Xiaofan Fei ,  Johann G. Gaboriau ,  Steven Green ,  Jason P. Rhode ,  Eric Walburger ,  Wilson E. Taylor, Jr.

IPC: H03F99/00 ,  H03F3/38

CPC classification number: H03F3/2175 ,  H03F1/52 ,  H03F3/2173 ,  H03F2200/331 ,  H03F2200/447

Abstract: A thermal sensor at the output of a switching amplifier senses heat dissipation at the output switch. If an overheating condition is sensed, gain of the digital input signal is lowered to reduce output power of the audio output signal.

Abstract translation: 开关放大器输出端的热传感器感测输出开关的散热。 如果感测到过热状况，数字输入信号的增益被降低以降低音频输出信号的输出功率。

公开(公告)号：US08421540B1

公开(公告)日：2013-04-16

申请号：US13155100

申请日：2011-06-07

Applicant: Anindya Bhattacharya

Inventor： Anindya Bhattacharya

IPC: H02H7/20

CPC classification number: H03F1/52 ,  H03F3/185 ,  H03F3/21 ,  H03F2200/03

Abstract: The system contains a first input receiving a signal from the amplifier input. A second input receives a signal from the amplifier output. A gain modification device is connected to the second input thereby reducing an amplitude of the signal from the amplifier output. A difference element connected to the gain modification device and the first input subtracts one of the first input and the second input from the other of the first input and the second input and outputting a difference voltage. A comparator, connected to the difference element and a threshold voltage source, compares the difference voltage to a threshold voltage. A disabling device is connected to the comparator and an output stage of the amplifier, wherein an output stage of the amplifier is disabled when the threshold voltage exceeds the difference voltage.

Abstract translation: 该系统包含接收来自放大器输入端的信号的第一输入端。 第二输入接收来自放大器输出的信号。 增益修改装置连接到第二输入，从而减小来自放大器输出的信号的幅度。 连接到增益修改装置和第一输入的差分元件从第一输入和第二输入中的另一个中减去第一输入和第二输入中的一个，并输出差分电压。 连接到差分元件和阈值电压源的比较器将差分电压与阈值电压进行比较。 禁用装置连接到比较器和放大器的输出级，其中当阈值电压超过差分电压时，放大器的输出级被禁止。

公开(公告)号：US08330434B2

公开(公告)日：2012-12-11

申请号：US12242024

申请日：2008-09-30

Applicant: John L. Melanson

Inventor： John L. Melanson

IPC: G05F1/70

CPC classification number: H01F38/02 ,  H01F3/10 ,  H01F3/14 ,  H01F38/08 ,  H01F2038/026 ,  H02M1/42 ,  H02M2001/0032 ,  Y02B70/12 ,  Y02B70/16

Abstract: A power supply includes a rectifier having an AC input and a DC output and a power factor correction (PFC) preregulator, coupled to the rectifier, that increases a power factor of the power supply. The PFC preregulator includes a controller that integrates an input power to determine energy consumption and outputs a signal indicative of the energy consumption.

Abstract translation: 电源包括具有AC输入和DC输出的整流器和耦合到整流器的功率因数校正（PFC）预调节器，其增加了电源的功率因数。 PFC预调节器包括集成输入功率以确定能量消耗并输出指示能量消耗的信号的控制器。

公开(公告)号：US20120286684A1

公开(公告)日：2012-11-15

申请号：US13289845

申请日：2011-11-04

Applicant: John L. Melanson ,  Eric J. King

Inventor： John L. Melanson ,  Eric J. King

IPC: H05B37/02

CPC classification number: H05B33/0815 ,  H02M1/4225 ,  H02M2001/0045 ,  H05B33/0842 ,  H05B41/245 ,  H05B41/2928 ,  H05B41/34 ,  Y02B20/346 ,  Y02B70/126

Abstract: A lighting system includes one or more methods and systems to control dissipation of excess power in the lighting system when the power into a switching power converter from a leading edge, phase-cut dimmer is greater than the power out of the switching power converter. In at least one embodiment, the lighting system includes a controller that controls dissipation of excess energy in the lighting system to prevent a premature disconnection of the phase-cut dimmer. In at least one embodiment, the controller actively controls power dissipation by generating one or more signals to actively and selectively control power dissipation in the lighting system. By actively and selectively controlling power dissipation in the lighting system, the controller intentionally dissipates power when the power into the lighting system should be greater than the power out to a lamp of the lighting system. In at least one embodiment, the controller creates one or more intermixed and/or interspersed power dissipation phases with one or more switching power converter charging and/or flyback phases.

Abstract translation: 照明系统包括一个或多个方法和系统，用于当来自前沿的切换调光器的功率大于开关功率转换器的功率时，控制照明系统中多余功率的耗散。 在至少一个实施例中，照明系统包括控制器，其控制照明系统中的多余能量的耗散以防止相位切割调光器的过早断开。 在至少一个实施例中，控制器通过产生一个或多个信号主动地和有选择地控制照明系统中的功率耗散来主动地控制功率耗散。 通过积极和选择性地控制照明系统中的功率消耗，当进入照明系统的电力应大于照明系统的灯的电力时，控制器有意地耗散功率。 在至少一个实施例中，控制器利用一个或多个开关功率转换器充电和/或反激阶段创建一个或多个混合和/或散置的功率耗散相位。

公开(公告)号：US08288954B2

公开(公告)日：2012-10-16

申请号：US12415830

申请日：2009-03-31

Applicant: John L. Melanson

Inventor： John L. Melanson

IPC: H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B37/00 ,  H05B39/00 ,  H05B41/14 ,  H05B39/02 ,  H05B41/16 ,  H05B41/24

CPC classification number: H02M3/33523 ,  H05B33/0815 ,  H05B33/0851

Abstract: A power control system includes a transformer and a controller regulates a current on a secondary-side of the transformer based on a primary-side signal value. In at least one embodiment, the secondary-side current is a current out of a filter coupled to a rectifier and the secondary-side of the transformer and into a load. In at least one embodiment, the primary-side signal value is a sample of a current in the primary-side windings of the transformer. In at least one embodiment, the primary-side signal value represents a sample value of a primary-side transformer current. Proper timing of sampling the primary-side signal value substantially eliminates contributions of a transformer magnetizing current from the primary-side transformer current sample. Sampling the primary-side signal value when contributions of the transformer magnetizing current are substantially eliminated allows at least an average of the secondary-side current to be determined from the primary-side signal value.

Abstract translation: 功率控制系统包括变压器和控制器，其基于初级侧信号值来调节变压器次级侧的电流。 在至少一个实施例中，次级侧电流是耦合到整流器的滤波器和变压器的次级侧的负载中的电流。 在至少一个实施例中，初级侧信号值是变压器的初级侧绕组中的电流的采样。 在至少一个实施例中，初级侧信号值表示初级侧变压器电流的采样值。 初级侧信号值的正确采样时间基本上消除了来自初级侧变压器电流样本的变压器磁化电流的贡献。 当变压器励磁电流的贡献基本上消除时对初级侧信号值进行取样允许根据初级侧信号值确定次级侧电流的平均值。

公开(公告)号：US08279628B2

公开(公告)日：2012-10-02

申请号：US12241969

申请日：2008-09-30

Applicant: John L. Melanson

Inventor： John L. Melanson

IPC: H02M3/335

CPC classification number: H01F38/02 ,  H01F3/10 ,  H01F3/14 ,  H01F38/08 ,  H01F2038/026 ,  H02M1/42 ,  H02M2001/0032 ,  Y02B70/12 ,  Y02B70/16

Abstract: Audible noise in resonant switching power converter during low-power burst mode operation is reduced by spreading the spectrum generated by the bursts, thereby reducing the amplitude of audio spectrum peaks in the current supplied through the resonant tank from a switching circuit. The spreading can be accomplished by varying the intervals between the bursts and/or by varying a pulse pattern within the bursts. The pulse pattern within the bursts can be varied by varying the number of pulses in the bursts, the polarity of the initial pulse of the bursts, and/or the duration of pulses within the bursts either uniformly or randomly. The burst pulse pattern may also be selected in alternation from a set of pulse patterns stored in a memory and the selection may be made randomly or systematically.

Abstract translation: 在低功率突发模式操作期间，谐振开关功率转换器中的声音噪声通过扩展由脉冲串产生的频谱而减小，从而降低了从开关电路通过谐振储能器提供的电流中的音频频谱峰值的幅度。 可以通过改变突发之间的间隔和/或通过改变突发内的脉冲模式来实现扩展。 可以通过在脉冲串中的脉冲数，脉冲串的初始脉冲的极性和/或脉冲串中的脉冲持续时间均匀地或随机地改变脉冲串内的脉冲模式。 突发脉冲图案也可以从存储在存储器中的一组脉冲图案交替地选择，并且可以随机或系统地进行选择。