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1. 发明申请

US20110140630A1 DRIVE CIRCUIT FOR HIGH-BRIGHTNESS LIGHT EMITTING DIODES 有权
标题翻译：用于高亮度发光二极管的驱动电路
公开(公告)号：US20110140630A1
公开(公告)日：2011-06-16
申请号：US12638218
申请日：2009-12-15
申请人： Eleftherios Doudousakis , Ciro Lee Sirio
发明人： Eleftherios Doudousakis , Ciro Lee Sirio
IPC分类号： H05B37/02 , G05F1/613 , H02H9/06 , H02M7/155
CPC分类号： H02M3/156 , H05B33/0815
摘要： A drive circuit includes a DC/DC converter, an outer control loop providing an output voltage representing a comparison between a load current and a reference voltage, a multiplier multiplying the outer control loop output voltage with a sample of the rectified output and provide an output current, a current amplifier comparing an input line current sample and the multiplier output current, a comparator driving the switch with a modulated output based on the current amplifier output and a sawtooth reference, and an upper voltage limit loop having an output in electrical communication with the outer control loop output, wherein the outer control loop output voltage is impacted by the upper voltage limit loop output during a zero load scenario. The drive circuit also includes a line voltage transformer and a lightning suppression circuit coupled to the voltage rectifier output.
摘要翻译：驱动电路包括DC / DC转换器，提供表示负载电流和参考电压之间的比较的输出电压的外部控制环路，将外部控制环路输出电压与整流输出的采样值相乘的乘法器，并提供输出电流，比较输入线电流采样和乘法器输出电流的电流放大器，比较器，基于电流放大器输出和锯齿参考，驱动具有调制输出的开关，以及具有与外部控制环路输出，其中外部控制环路输出电压在零负载情况期间受到上限电压限制环路输出的影响。驱动电路还包括线路电压互感器和耦合到电压整流器输出的避雷电路。

2. 发明公开

US20240014748A1 LOAD INDEPENDENT VOLTAGE AND CURRENT GAIN RESONANT TOPOLOGIES 审中-公开
公开(公告)号：US20240014748A1
公开(公告)日：2024-01-11
申请号：US17862084
申请日：2022-07-11
申请人： TDK-Lambda Americas Inc.
发明人： Praveen Desireddy
IPC分类号： H02M7/48 , H02M7/5387 , H02J7/02
CPC分类号： H02M7/4815 , H02M7/53871 , H02J7/02
摘要： A resonant converter, apparatus, and method for power conversion. The resonant converter includes an input stage, an output stage, and a resonant network stage that includes at least one inductor and at least one capacitor. The resonant network stage is electrically coupled between the input stage and the output stage and configured to provide a constant current gain at a first operating frequency and a constant voltage gain at a second operating frequency that differs from the first operating frequency. The output stage is configured to be electrically coupled to a load having either a constant current or constant voltage operating mode, or both, and the resonant network provides the constant current, or the constant voltage based on a control signal generated by a frequency modulator for switching between the first operating frequency and the second operating frequency.

3. 发明授权

US10536087B1 Half-bridge power converter with pre-charging circuit 有权
公开(公告)号：US10536087B1
公开(公告)日：2020-01-14
申请号：US16157604
申请日：2018-10-11
申请人： TDK-Lambda Americas Inc.
发明人： Jin He , Del Hilburn
IPC分类号： H02M1/00 , H02M3/07 , H02M3/335 , H02M7/48 , H02M1/088
摘要： A half-bridge power converter includes a transformer dividing the half-bridge power converter into a primary side and a secondary side. Disposed on the first side is a first capacitor bank and a second capacitor bank in series with the first capacitor hank, and also a bootstrap capacitor configured to be charged by current flowing through a charging current flowpath. The charging current flowpath extends at least through a pre-charging circuit located on the primary side, the pre-charging circuit being configured to reduce a voltage imbalance between the first capacitor bank and the second capacitor bank. The half-bridge power converter also includes a discharging current flowpath that extends at least through a primary winding of the transformer and the pre-charging circuit.

4. 发明授权

US08164275B2 Drive circuit for high-brightness light emitting diodes 有权
标题翻译：驱动电路用于高亮度发光二极管
公开(公告)号：US08164275B2
公开(公告)日：2012-04-24
申请号：US12638218
申请日：2009-12-15
申请人： Eleftherios Doudousakis , Ciro Lee Sirio
发明人： Eleftherios Doudousakis , Ciro Lee Sirio
IPC分类号： H05B37/02
CPC分类号： H02M3/156 , H05B33/0815
摘要： A drive circuit includes a DC/DC converter, an outer control loop providing an output voltage representing a comparison between a load current and a reference voltage, a multiplier multiplying the outer control loop output voltage with a sample of the rectified output and provide an output current, a current amplifier comparing an input line current sample and the multiplier output current, a comparator driving the switch with a modulated output based on the current amplifier output and a sawtooth reference, and an upper voltage limit loop having an output in electrical communication with the outer control loop output, wherein the outer control loop output voltage is impacted by the upper voltage limit loop output during a zero load scenario. The drive circuit also includes a line voltage transformer and a lightning suppression circuit coupled to the voltage rectifier output.
摘要翻译：驱动电路包括DC / DC转换器，提供表示负载电流和参考电压之间的比较的输出电压的外部控制环路，将外部控制环路输出电压与整流输出的采样值相乘的乘法器，并提供输出电流，比较输入线电流采样和乘法器输出电流的电流放大器，比较器，基于电流放大器输出和锯齿参考，驱动具有调制输出的开关，以及具有与外部控制环路输出，其中外部控制环路输出电压在零负载情况期间受到上限电压限制环路输出的影响。驱动电路还包括线路电压互感器和耦合到电压整流器输出的避雷电路。

5. 发明授权

US07869226B2 Achieving ZVS in a two quadrant converter using a simplified auxiliary circuit 有权
标题翻译：使用简化的辅助电路在两象限转换器中实现ZVS
公开(公告)号：US07869226B2
公开(公告)日：2011-01-11
申请号：US12415903
申请日：2009-03-31
申请人： Ciro Lee Sirio , Eleftherios Doudousakis
发明人： Ciro Lee Sirio , Eleftherios Doudousakis
IPC分类号： H02M3/335
CPC分类号： H02M7/538 , H02M1/38 , H02M3/1588 , H02M2007/4811 , Y02B70/1466
摘要： A zero voltage switch half bridge converter comprises a first and second diode series diodes, parallel with a voltage source. A first terminal of an inductor is joined to the diode junction. A first semiconductor auxiliary switch connected in series between the voltage source and a third diode, which is in series with a fourth diode connected to a second semiconductor auxiliary switch. First and second semiconductor main switches are connected in series and in parallel with the voltage supply. A capacitive voltage divider connected across the voltage source, wherein a second terminal of the inductor is connected to junction of the main switches and a midpoint of the capacitive voltage divider. A control circuit is configured to provide respective control signals to at least the first semiconductor auxiliary switch and the second semiconductor auxiliary switch.
摘要翻译：零电压开关半桥转换器包括与电压源并联的第一和第二二极管串联二极管。电感器的第一端子连接到二极管结。串联连接在电压源和与连接到第二半导体辅助开关的第四二极管串联的第三二极管的第一半导体辅助开关。第一和第二半导体主开关串联并联电压。一个连接在电压源上的电容分压器，其中电感器的第二端连接到主开关的结和电容分压器的中点。控制电路被配置为向至少第一半导体辅助开关和第二半导体辅助开关提供相应的控制信号。

6. 发明授权

US11942865B2 Non-isolated power module with user adjustable pass-through mode 有权
公开(公告)号：US11942865B2
公开(公告)日：2024-03-26
申请号：US17244743
申请日：2021-04-29
申请人： TDK-Lambda Americas, Inc.
发明人： Carl Wildrick , Joel Zaens
IPC分类号： H02M3/158 , H02M1/00
CPC分类号： H02M3/1582 , H02M1/0025
摘要： A power converter with a voltage-modulating circuit, a controller, and a sensing circuit. The controller controls switches of a voltage-modulating circuit to provide a level of an output voltage (VOUT) based on an operational mode of the voltage-modulating circuit and a voltage measurement provided by the sensing circuit. The operational mode of the voltage-modulating circuit can be pass-through mode or voltage-modulating. The sensing circuit includes one or more externally programmable connectors configured to determine one or more boundaries of an output voltage window. In the pass-through mode, a level of VOUT will be provided without switching any of the switches when a level of an input voltage (VIN) falls within the output voltage window. In the voltage-modulating mode, a level of VOUT will be provided by switching one or more of the switches when the level of VIN falls outside of the output voltage window having only one boundary.

7. 发明申请

US20220352821A1 NON-ISOLATED POWER MODULE WITH USER ADJUSTABLE PASS-THROUGH MODE 有权
公开(公告)号：US20220352821A1
公开(公告)日：2022-11-03
申请号：US17244743
申请日：2021-04-29
申请人： TDK-Lambda Americas, Inc.
发明人： Carl Wildrick , Joel Zaens
IPC分类号： H02M3/158 , G01R19/165 , H02M1/00
摘要： A power converter with a voltage-modulating circuit, a controller, and a sensing circuit. The controller controls switches of a voltage-modulating circuit to provide a level of an output voltage (VOUT) based on an operational mode of the voltage-modulating circuit and a voltage measurement provided by the sensing circuit. The operational mode of the voltage-modulating circuit can be pass-through mode or voltage-modulating. The sensing circuit includes one or more externally programmable connectors configured to determine one or more boundaries of an output voltage window. In the pass-through mode, a level of VOUT will be provided without switching any of the switches when a level of an input voltage (VIN) falls within the output voltage window. In the voltage-modulating mode, a level of VOUT will be provided by switching one or more of the switches when the level of VIN falls outside of the output voltage window having only one boundary.

8. 发明申请

US20130050954A1 Thermal Management System and Method 有权
标题翻译：热管理系统和方法
公开(公告)号：US20130050954A1
公开(公告)日：2013-02-28
申请号：US13659066
申请日：2012-10-24
申请人： TDK-Lambda Americas, Inc.
发明人： L. Ray Albrecht, III , Gordon K.Y. Lee , Jin He
IPC分类号： H05K7/20 , H05K3/34
CPC分类号： H05K7/20463 , H05K1/0203 , H05K1/0204 , H05K1/144 , H05K7/20454 , H05K7/205 , H05K2201/042 , H05K2201/10303 , H05K2201/10409 , H05K2201/1056 , H05K2201/10871 , Y10T29/49144
摘要： A thermal management system/method allowing efficient electrical/thermal attachment of heat sourcing PCBs to heat sinking PCBs using reflow/wave/hand soldering is disclosed. The disclosed system/method may incorporate a combination of support pins, spacer pads, and/or contact paste that mechanically attaches a heat sourcing PCB (and its associated components) to a heat sinking PCB such that thermal conductivity between the two PCBs can be optimized while simultaneously allowing controlled electrical conductivity between the two PCBs. Controlled electrical isolation between the two PCBs is provided for using spacer pads that may also be thermal conductive. Contact paste incorporated in some embodiments permits enhanced conductivity paths between the heat sourcing PCB, a thermally conductive plate mounted over the heat sourcing PCB, and the heat sinking PCB. The use of self-centering support pins incorporating out-gassing vents in some embodiments allows reflow/wave/hand soldering as desired.
摘要翻译：公开了一种热管理系统/方法，其允许使用回流/波/手焊接将散热PCB的热源PCB与电源/热附件进行高效电连接。所公开的系统/方法可以包括将热源PCB（及其相关部件）机械连接到散热PCB上的支撑销，间隔垫和/或接触膏的组合，使得可以优化两个PCB之间的导热性同时允许两个PCB之间的受控电导率。两个PCB之间的受控电气隔离被提供用于使用也可以是导热的间隔垫。在一些实施例中结合的接触膏允许加热PCB，安装在热源PCB上的导热板和散热PCB之间的增强的导电路径。在一些实施例中，使用包含排气孔的自定心支撑销允许根据需要进行回流/波/手焊。

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