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    • 1. 发明授权
    • Primary only constant voltage/constant current (CVCC) control in quasi resonant convertor
    • 准谐振转换器中主要的恒定电压/恒定电流(CVCC)控制
    • US07830676B2
    • 2010-11-09
    • US12079662
    • 2008-03-27
    • Mark TelefusFarza Bob Roohparvar
    • Mark TelefusFarza Bob Roohparvar
    • H02M3/335
    • 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 the secondary each comprise 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. A current feedback circuit is coupled between the primary and a controller. A virtual output current feedback loop is provided for regulating an output current using the reflected voltage signal.
    • 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。 初级和次级各自包括单个绕组。 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。 电流反馈电路耦合在主控制器和控制器之间。 提供虚拟输出电流反馈回路,用于使用反射电压信号调节输出电流。
    • 2. 发明授权
    • Pulse frequency to voltage conversion
    • 脉冲频率到电压转换
    • US07755914B2
    • 2010-07-13
    • US12079663
    • 2008-03-27
    • Mark TelefusFarza Bob Roohparvar
    • Mark TelefusFarza Bob Roohparvar
    • H02M3/335
    • 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。
    • 4. 发明申请
    • TWO TERMINALS QUASI RESONANT TANK CIRCUIT
    • 两个端子QUASI RESONAN坦克电路
    • US20100061123A1
    • 2010-03-11
    • US12620003
    • 2009-11-17
    • Arian JansenMark TelefusBahman Sharifipour
    • Arian JansenMark TelefusBahman 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)。
    • 5. 发明申请
    • Contactless energy transmission converter
    • 非接触式能量传输转换器
    • US20070287508A1
    • 2007-12-13
    • US11810917
    • 2007-06-06
    • Mark Telefus
    • Mark Telefus
    • H04B1/38H04M1/00
    • H02J50/10H02J5/005H02J7/025H02J50/40
    • The present invention is an efficient method of transferring energy wirelessly and an apparatus which efficiently transfers energy wirelessly. A high transmission frequency is modulated by a lower frequency in order to reduce the intensity of the resulting electromagnetic interference. The present invention creates a high magnetic flux density by employing a large number of small induction coils which generates a strong electromagnetic field in a wide range of directions. The present invention is a “true wireless system” in that it overcomes the range limitations and requirement for precise alignment present in the field of art. A number of apparatuses and practical implementations for contactless energy transfer exist.
    • 本发明是一种无线传输能量的有效方法和一种能够无线传输能量的装置。 为了降低所产生的电磁干扰的强度,较高频率的高频率被调制。 本发明通过采用大量在大的方向上产生强电磁场的小感应线圈来产生高磁通密度。 本发明是一种“真正的无线系统”,它克服了在现有领域中存在的精确对准的范围限制和要求。 存在用于非接触能量转移的多种装置和实际实现。
    • 7. 发明授权
    • Control method to reduce switching loss on MOSFET
    • 降低MOSFET开关损耗的控制方法
    • US09287792B2
    • 2016-03-15
    • US13584543
    • 2012-08-13
    • Mark TelefusWei Li
    • Mark TelefusWei Li
    • H02M3/335H02M1/00
    • H02M3/33592H02M3/33576H02M2001/0058Y02B70/1475Y02B70/1491
    • A method of controlling a switching mode power converter enables zero voltage switching by forcing a voltage across the main switch to zero. This is accomplished by sensing when a current on the secondary side of the power converter drops to zero, or other threshold value, and then generating a negative current through the secondary winding in response. The negative secondary current results in a corresponding discharge current in the primary winding, which reduces the voltage across the main switch. The voltage across the main switch is monitored such that when the voltage reaches zero, or other threshold value, the main switch is turned ON. In this manner, the circuit functions as a bi-directional current circuit where a forward current delivers energy to a load and a reverse current provides control for reducing the voltage across the main switch to enable zero voltage switching.
    • 控制开关模式功率转换器的方法通过将主开关上的电压强制为零来实现零电压切换。 这是通过检测在功率转换器的次级侧的电流下降到零或其他阈值,然后响应地产生通过次级绕组的负电流来实现的。 负二次电流导致初级绕组中的相应放电电流,这降低了主开关两端的电压。 监控主开关两端的电压,使得当电压达到零或其他阈值时,主开关接通。 以这种方式,电路用作双向电流电路,其中正向电流向负载输送能量,并且反向电流提供用于减小主开关两端的电压以实现零电压切换的控制。
    • 8. 发明授权
    • High power converter architecture
    • 大功率转换器架构
    • US08743565B2
    • 2014-06-03
    • 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。
    • 9. 发明申请
    • NOVEL CONTROL METHOD TO REDUCE SWITCHING LOSS ON MOSFET
    • 降低MOSFET开关损耗的新型控制方法
    • US20140043863A1
    • 2014-02-13
    • US13584543
    • 2012-08-13
    • Mark TelefusWei Li
    • Mark TelefusWei Li
    • H02M3/335
    • H02M3/33592H02M3/33576H02M2001/0058Y02B70/1475Y02B70/1491
    • A method of controlling a switching mode power converter enables zero voltage switching by forcing a voltage across the main switch to zero. This is accomplished by sensing when a current on the secondary side of the power converter drops to zero, or other threshold value, and then generating a negative current through the secondary winding in response. The negative secondary current results in a corresponding discharge current in the primary winding, which reduces the voltage across the main switch. The voltage across the main switch is monitored such that when the voltage reaches zero, or other threshold value, the main switch is turned ON. In this manner, the circuit functions as a bi-directional current circuit where a forward current delivers energy to a load and a reverse current provides control for reducing the voltage across the main switch to enable zero voltage switching.
    • 控制开关模式功率转换器的方法通过将主开关上的电压强制为零来实现零电压切换。 这是通过检测在功率转换器的次级侧的电流下降到零或其他阈值,然后响应地产生通过次级绕组的负电流来实现的。 负二次电流导致初级绕组中的相应放电电流,这降低了主开关两端的电压。 监控主开关两端的电压,使得当电压达到零或其他阈值时,主开关接通。 以这种方式,电路用作双向电流电路,其中正向电流向负载输送能量,并且反向电流提供用于减小主开关两端的电压以实现零电压切换的控制。
    • 10. 发明申请
    • HIGH POWER CONVERTER ARCHITECTURE
    • 高功率转换器架构
    • US20140029312A1
    • 2014-01-30
    • US13560847
    • 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. An output circuit of the power converter is configured as a forward-type converter including two diodes and an inductor. The output circuit is coupled to a secondary winding of a converter transformer.
    • 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。 功率转换器的输出电路被配置为包括两个二极管和电感器的正向型转换器。 输出电路耦合到转换器变压器的次级绕组。