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    • 33. 发明授权
    • Power converter with noise immunity
    • 功率转换器具有抗噪声能力
    • US09276460B2
    • 2016-03-01
    • US13481015
    • 2012-05-25
    • Mark Telefus
    • Mark Telefus
    • H02M1/12H02M1/44H02M1/00
    • H02M1/44H02M2001/0016
    • A power adapter system, method and device having two feedback loops that produces an output voltage on a load with a power converter using an input power. A feedback element coupled with the power converter comprises a first feedback loop that compensates for error on the output voltage. A noise detection element coupled with the power converter comprises a second feedback loop that detects noise and produces a noise feedback voltage based on the detected noise. Based on the noise feedback voltage a controller coupled with the power converter adjusts the operation of the power converter in order to compensate for or not respond to the effects of high frequency noise such as radio frequency noise on the first feedback loop of the system.
    • 具有两个反馈回路的电力适配器系统,方法和装置,其使用输入功率在功率转换器上在负载上产生输出电压。 与功率转换器耦合的反馈元件包括补偿输出电压上的误差的第一反馈环路。 与功率转换器耦合的噪声检测元件包括第二反馈回路,其基于检测到的噪声来检测噪声并产生噪声反馈电压。 基于噪声反馈电压,与功率转换器耦合的控制器调整功率转换器的操作,以补偿或不响应诸如射频噪声的高频噪声对系统的第一反馈环路的影响。
    • 35. 发明申请
    • HIGH POWER CONVERTER ARCHITECTURE
    • 高功率转换器架构
    • US20140029313A1
    • 2014-01-30
    • US13560910
    • 2012-07-27
    • Mark Telefus
    • Mark Telefus
    • H02M3/335
    • H02M3/33523H02M2001/342Y02B70/1433Y02B70/1491
    • The power converter is an integration of three topologies which include a forward converter topology, a flyback converter topology, and a resonant circuit topology. The combination of these three topologies functions to transfer energy using three different modes. A first mode, or forward mode, is a forward energy transfer that forwards energy from the input supply to the output load in a manner similar to a forward converter. A second mode, or flyback mode, stores and releases energy in a manner similar to a flyback converter. A third mode, or resonant mode, stores and releases energy from the resonant tank using a resonant circuit and a secondary side forward-type converter topologies.
    • 功率转换器是三个拓扑的集成,包括正激转换器拓扑,反激转换器拓扑和谐振电路拓扑。 这三种拓扑结合使用三种不同的模式传递能量。 第一模式或正向模式是以与正向转换器类似的方式将能量从输入电源转发到输出负载的正向能量传递。 第二模式或反激模式以与回扫转换器类似的方式存储和释放能量。 第三模式或谐振模式使用谐振电路和次级侧正向变换器拓扑来存储和释放来自谐振回路的能量。
    • 36. 发明申请
    • CLOSED LOOP NEGATIVE FEEDBACK SYSTEM WITH LOW FREQUENCY MODULATED GAIN
    • 具有低频调制增益的闭环负反馈系统
    • US20100289466A1
    • 2010-11-18
    • US12467039
    • 2009-05-15
    • Mark Telefus
    • Mark Telefus
    • G05F1/10
    • H02M3/155H02M1/12H02M1/44
    • A power supply apparatus and method of regulating is provided. A clock generator circuit is configured for generating a clock signal at a predetermined frequency. An amplifier circuit is coupled with the clock generator circuit. The amplifier circuit includes a gain circuit coupled with the clock generator circuit. The amplifier circuit is configured to receive the clock signal at a switching element of the gain circuit. A controller circuit is configured for receiving a modulated error signal of the amplifier circuit and is configured for generating a pulse width modulated signal for controlling a duty cycle of the switching circuit. The switching circuit is configured for receiving the modulated error signal. The error signal is modulated using the clock signal to vary a gain value of the gain circuit according to the predetermined frequency. An output circuit is coupled with the switching circuit and is configured for generating a regulated voltage signal. The controller circuit uses the modulated error signal to substantially reduce harmonic distribution in a switching frequency of the switching circuit. Harmonic distribution in the switching circuit can be reduce by 10.0 db or greater.
    • 提供电源装置和调节方法。 时钟发生器电路被配置为以预定频率产生时钟信号。 放大器电路与时钟发生器电路耦合。 放大器电路包括与时钟发生器电路耦合的增益电路。 放大器电路被配置为在增益电路的开关元件处接收时钟信号。 控制器电路被配置为用于接收放大器电路的调制误差信号,并且被配置为产生用于控制开关电路的占空比的脉宽调制信号。 开关电路被配置为用于接收调制的误差信号。 使用时钟信号调制误差信号,以根据预定频率改变增益电路的增益值。 输出电路与开关电路耦合,并被配置为产生调节电压信号。 控制器电路使用调制误差信号来大大减少开关电路的开关频率中的谐波分布。 开关电路中的谐波分布可以减少10.0db或更大。
    • 37. 发明授权
    • Two terminals quasi resonant tank circuit
    • 两端子准谐振回路
    • US07764515B2
    • 2010-07-27
    • US11706554
    • 2007-02-14
    • Arian JansenMark TelefusBahmar Sharifipour
    • Arian JansenMark TelefusBahmar Sharifipour
    • H02M3/335
    • H02M3/33507H02M3/33523H02M3/33569Y02B70/1433
    • A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.
    • 功率转换器包括变压器,初级开关,辅助开关,第一和第二谐振电容器以及次级侧整流装置。 形成开关模式电源,以使用反射电压和寄生电容作为变压器谐振的能量源。 辅助开关有效地在变压器的初级电感和第一和第二谐振电容器之间交换能量。 辅助开关有效地切换两个不同频率之间的变压器谐振。 在本发明的一个实施例中,功率转换器可以是但不限于反激转换器,还包括比较器和驱动器。 比较器用于检测第二谐振电容器两端的电压,并且驱动器被配置为基于比较器的输出状态来驱动辅助开关。 转换器的谐振特性为主开关以及辅助开关提供零电压(ZVS)。
    • 39. 发明申请
    • Pulse frequency to voltage conversion
    • 脉冲频率到电压转换
    • US20080238379A1
    • 2008-10-02
    • US12079663
    • 2008-03-27
    • Mark TelefusFarza Bob Roohparvar
    • Mark TelefusFarza Bob Roohparvar
    • G05F1/44G05F1/10
    • H02M3/33523H02M3/33569Y02B70/1433
    • A power supply apparatus and method of regulating is provided. A converter circuit includes a primary switching element and an auxiliary switching element. The auxiliary switching element is for transferring a reflected voltage signal. A transformer includes a primary and a secondary, the primary is coupled with the converter circuit. The primary and secondary each include a single winding. An output rectifier circuit is coupled with the secondary of the transformer. A resonant circuit is included in the converter circuit and is coupled with the primary. The resonant circuit includes one or more resonance capacitors that are configured for providing a transformer resonance. The transformer resonance comprises the reflected voltage signal, the capacitance of the one or more resonance capacitors and a parasitic capacitance of the transformer. The reflected voltage signal is reflected from the secondary to the primary. The resonant circuit converts a pulse train to produce a voltage potential, the voltage potential varying in proportion to an output voltage, the pulse train comprising a duty cycle proportional to a load current. A virtual output voltage feedback loop is provided. The converter circuit is responsive to a virtual output voltage reference signal in regulating an output voltage.
    • 提供电源装置和调节方法。 A转换器电路包括主开关元件和辅助开关元件。 辅助开关元件用于传送反射电压信号。 变压器包括初级和次级,初级与转换器电路耦合。 主要和次要的包括单个绕组。 输出整流电路与变压器的次级耦合。 谐振电路包括在转换器电路中并与初级耦合。 谐振电路包括被配置为提供变压器谐振的一个或多个谐振电容器。 变压器谐振包括反射电压信号,一个或多个谐振电容器的电容和变压器的寄生电容。 反射电压信号从次级反射到初级。 谐振电路转换脉冲串以产生电压电位,电压电位与输出电压成比例地变化,脉冲串包括与负载电流成比例的占空比。 提供虚拟输出电压反馈回路。 转换器电路在调节输出电压时响应于虚拟输出电压参考信号。
    • 40. 发明申请
    • Two terminals quasi resonant tank circuit
    • 两端子准谐振回路
    • US20070263415A1
    • 2007-11-15
    • US11706554
    • 2007-02-14
    • Arian JansenMark TelefusBahmar Sharifipour
    • Arian JansenMark TelefusBahmar Sharifipour
    • H02M3/335
    • H02M3/33507H02M3/33523H02M3/33569Y02B70/1433
    • A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.
    • 功率转换器包括变压器,初级开关,辅助开关,第一和第二谐振电容器以及次级侧整流装置。 形成开关模式电源,以使用反射电压和寄生电容作为变压器谐振的能量源。 辅助开关有效地在变压器的初级电感和第一和第二谐振电容器之间交换能量。 辅助开关有效地切换两个不同频率之间的变压器谐振。 在本发明的一个实施例中,功率转换器可以是但不限于反激式转换器,并且还包括比较器和驱动器。 比较器用于检测第二谐振电容器两端的电压,并且驱动器被配置为基于比较器的输出状态来驱动辅助开关。 转换器的谐振特性为主开关以及辅助开关提供零电压(ZVS)。