公开(公告)号：US09312775B2

公开(公告)日：2016-04-12

申请号：US13865010

申请日：2013-04-17

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M3/33576

摘要： A switched mode power converter includes a closed loop feedback control mechanism for regulating an output characteristic and a resonant type circuit for inclusion of resonant energy delivery. The characteristic impedance of the resonant type circuit is modified from an optimal energy transfer configuration to one that dampens fluctuations in a feedback signal used by the closed loop feedback mechanism. The modified characteristic impedance functions to dampen those fluctuations in the feedback signal resulting from leakage inductance energy provided by the resonant type circuit.

摘要翻译： 开关式功率转换器包括用于调节输出特性的闭环反馈控制机构和用于包含谐振能量输送的谐振型电路。 谐振型电路的特性阻抗从最佳能量传递配置修改为抑制闭环反馈机构使用的反馈信号的波动。 改进的特征阻抗用于抑制由谐振型电路提供的漏电感能产生的反馈信号中的那些波动。

公开(公告)号：US20140266028A1

公开(公告)日：2014-09-18

申请号：US13865052

申请日：2013-04-17

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02J7/02

CPC分类号： H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02M3/28 ,  H02M3/335 ,  H02M3/33507 ,  H03K17/00 ,  H04B5/0037

摘要： A power transmission pad is configured to provide wireless power transmission to a receiving device where the receiving device is orientation-free relative to the pad. The pad functions as a transmitter and is magnetically “hot”, meaning the pad generates a magnetic field when powered on. The receiving device, such as a cell phone, tablet, or other portable electronic device, is placed within the magnetic field for the purpose of charging the device battery. In contrast to conventional wireless battery charging systems, there are no restrictions on the orientation of the receiving device relative to the pad. The power transmission pad includes a sweep frequency generator for generating power transmissions across a frequency spectrum. An optimal frequency is determined for maximum energy transfer to the receiving device, and the sweep frequency generator is locked to the determined optimal frequency.

摘要翻译： 功率传输焊盘被配置为向接收设备提供无线电力传输，其中接收设备相对于焊盘是无定向的。 该垫用作发射器，并且是磁性“热”的，这意味着当上电时，焊盘产生磁场。 接收装置，例如蜂窝电话，平板电脑或其他便携式电子设备，放置在磁场内，以便为设备电池充电。 与传统的无线电池充电系统相反，接收装置相对于衬垫的取向没有限制。 功率传输焊盘包括用于在频谱上产生功率传输的扫频频率发生器。 确定对接收设备的最大能量传输的最佳频率，并且将扫频频率发生器锁定到所确定的最佳频率。

公开(公告)号：US09843212B2

公开(公告)日：2017-12-12

申请号：US13924402

申请日：2013-06-21

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02M3/335 ,  H02J7/02 ,  H04B5/00 ,  H02J50/12 ,  H02J50/10 ,  H03K17/00 ,  H02M3/28

CPC分类号： H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02M3/28 ,  H02M3/335 ,  H02M3/33507 ,  H03K17/00 ,  H04B5/0037

摘要： A power regulation control circuit is implemented as part of a power converter. The power regulation control circuit is implemented during two modes, a sleep mode and a wake-up mode. During the sleep mode, the power regulation control circuit detects a no-load presence and artificially increases the output voltage Vout to its maximum allowable value. This can be accomplished by pulling up an output of an error amplifier that feeds a PWM module. During the wake-up mode while the power converter wakes up from the sleep mode under maximum load, the output voltage Vout sinks from the artificially higher voltage, but still stays above a minimum operational voltage level. A slew rate compensation can be implemented to control a rate at which the output voltage drops when a load is applied. The artificially high output voltage during no-load condition and the slew rate compensation provide open loop voltage adjustment.

公开(公告)号：US09806553B2

公开(公告)日：2017-10-31

申请号：US13928250

申请日：2013-06-26

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02J7/02 ,  H04B5/00 ,  H02J50/12 ,  H02J50/10 ,  H03K17/00 ,  H02M3/335 ,  H02M3/28

CPC分类号： H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02M3/28 ,  H02M3/335 ,  H02M3/33507 ,  H03K17/00 ,  H04B5/0037

摘要： A driver circuit is configured using a depletion-mode MOSFET to supply an output voltage across an output capacitor. The driver circuit includes a resistor positioned between two terminals of the MOSFET. In the case of an n-channel depletion-mode MOSFET, the resistor is coupled to the source and the gate. The circuit is a current controlled depletion driver that turns OFF the depletion-mode MOSFET by driving a reverse current through the resistor to establish a negative potential at the gate relative to the source. A Zener diode is coupled between the source of the depletion-mode MOSFET and the output capacitor to establish a voltage differential between the output and the MOSFET source.

公开(公告)号：US09490651B2

公开(公告)日：2016-11-08

申请号：US13865052

申请日：2013-04-17

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02J7/00 ,  H01F27/42 ,  H04B5/00 ,  H04B1/38 ,  H02J7/02 ,  H03K17/00 ,  H02M3/335

CPC分类号： H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02M3/28 ,  H02M3/335 ,  H02M3/33507 ,  H03K17/00 ,  H04B5/0037

摘要： A power transmission pad is configured to provide wireless power transmission to a receiving device where the receiving device is orientation-free relative to the pad. The pad functions as a transmitter and is magnetically “hot”, meaning the pad generates a magnetic field when powered on. The receiving device, such as a cell phone, tablet, or other portable electronic device, is placed within the magnetic field for the purpose of charging the device battery. In contrast to conventional wireless battery charging systems, there are no restrictions on the orientation of the receiving device relative to the pad. The power transmission pad includes a sweep frequency generator for generating power transmissions across a frequency spectrum. An optimal frequency is determined for maximum energy transfer to the receiving device, and the sweep frequency generator is locked to the determined optimal frequency.

摘要翻译： 功率传输焊盘被配置为向接收设备提供无线电力传输，其中接收设备相对于焊盘是无定向的。 该垫用作发射器，并且是磁性“热”的，这意味着当上电时，焊盘产生磁场。 接收装置，例如蜂窝电话，平板电脑或其它便携式电子设备，放置在磁场内，以便为设备电池充电。 与传统的无线电池充电系统相反，接收装置相对于衬垫的取向没有限制。 功率传输焊盘包括用于在频谱上产生功率传输的扫频频率发生器。 确定对接收设备的最大能量传输的最佳频率，并且将扫频频率发生器锁定到所确定的最佳频率。

公开(公告)号：US09184668B2

公开(公告)日：2015-11-10

申请号：US14024514

申请日：2013-09-11

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M3/33592 ,  Y02B70/1475

摘要： A switched mode power converter having a feedback mechanism by which a coded train of pulses with well defined integrity is generated on a secondary side of the power converter and transmitted to a dedicated control signal winding on the primary side for decoding and application to regulate the power converter output. The control signal winding enables separation of control signal transmission and power transmission resulting in improved processing of the control signal by a primary side controller. The pulse train is modulated by a secondary side controller, transmitted across a transformer and received by the control signal winding, and supplied to the primary side controller. Coded information is included in the coded pulse train by modulating pulses of the pulse train.

摘要翻译： 一种具有反馈机制的开关模式功率转换器，通过该反馈机制，在功率转换器的次级侧产生具有良好定义的完整性的编码序列，并传送到初级侧的专用控制信号绕组以进行解码和应用以调节功率 转换器输出。 控制信号线圈能够分离控制信号传输和电力传输，从而改善了初级侧控制器对控制信号的处理。 脉冲串由次级侧控制器调制，通过变压器传输并由控制信号绕组接收，并提供给初级侧控制器。 编码信息通过调制脉冲序列的脉冲而包含在编码脉冲串中。

公开(公告)号：US09118253B2

公开(公告)日：2015-08-25

申请号：US13865022

申请日：2013-04-17

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M3/33576

摘要： A switched mode power converter is configured having predominate secondary side control. A primary side driving circuit is configured as a responsive state machine the output of which is input as the driving signal for a main switch. An output voltage, current or power is sensed and the secondary side controller compares the sensed output characteristic with a predefined reference. The comparison results in an error that signifies an amount that the output is out of regulation. The secondary side controller drives a secondary side switch to generate a voltage pulse across the secondary winding. The voltage pulse has a pulse width that represents the amount of error in the output characteristic. The voltage pulse is transmitted across the transformer and received by the primary side driving circuit, which generates a driving signal modulated according to the voltage pulse and drives the main switch to regulate the output characteristic.

摘要翻译： 开关模式功率转换器被配置为具有主要的次级侧控制。 初级侧驱动电路被配置为响应状态机，其输出被输入作为主开关的驱动信号。 检测输出电压，电流或功率，次级侧控制器将检测到的输出特性与预定参考值进行比较。 比较结果显示错误，表示输出超出规定的数量。 次级侧控制器驱动次级侧开关以在次级绕组上产生电压脉冲。 电压脉冲具有表示输出特性的误差量的脉冲宽度。 电压脉冲通过变压器传输并被初级侧驱动电路接收，其产生根据电压脉冲调制的驱动信号并驱动主开关以调节输出特性。

公开(公告)号：US20140268955A1

公开(公告)日：2014-09-18

申请号：US13924402

申请日：2013-06-21

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02M3/335

CPC分类号： H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02M3/28 ,  H02M3/335 ,  H02M3/33507 ,  H03K17/00 ,  H04B5/0037

摘要： A power regulation control circuit is implemented as part of a power converter. The power regulation control circuit is implemented during two modes, a sleep mode and a wake-up mode. During the sleep mode, the power regulation control circuit detects a no-load presence and artificially increases the output voltage Vout to its maximum allowable value. This can be accomplished by pulling up an output of an error amplifier that feeds a PWM module. During the wake-up mode while the power converter wakes up from the sleep mode under maximum load, the output voltage Vout sinks from the artificially higher voltage, but still stays above a minimum operational voltage level. A slew rate compensation can be implemented to control a rate at which the output voltage drops when a load is applied. The artificially high output voltage during no-load condition and the slew rate compensation provide open loop voltage adjustment.

摘要翻译： 功率调节控制电路被实现为功率转换器的一部分。 功率调节控制电路在两种模式下实现，即睡眠模式和唤醒模式。 在睡眠模式期间，功率调节控制电路检测空载存在并将输出电压Vout人为地增加到其最大允许值。 这可以通过提起馈送PWM模块的误差放大器的输出来实现。 在唤醒模式期间，功率转换器在最大负载下从休眠模式唤醒，输出电压Vout从人为更高的电压下降，但仍然保持在最低工作电压电平以上。 可以实施压摆率补偿来控制当施加负载时输出电压下降的速率。 在空载状态下人为高输出电压和转换速率补偿提供开环电压调节。

公开(公告)号：US20140266321A1

公开(公告)日：2014-09-18

申请号：US13928250

申请日：2013-06-26

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H03K17/00

CPC分类号： H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02M3/28 ,  H02M3/335 ,  H02M3/33507 ,  H03K17/00 ,  H04B5/0037

摘要： A driver circuit is configured using a depletion-mode MOSFET to supply an output voltage across an output capacitor. The driver circuit includes a resistor positioned between two terminals of the MOSFET. In the case of an n-channel depletion-mode MOSFET, the resistor is coupled to the source and the gate. The circuit is a current controlled depletion driver that turns OFF the depletion-mode MOSFET by driving a reverse current through the resistor to establish a negative potential at the gate relative to the source. A Zener diode is coupled between the source of the depletion-mode MOSFET and the output capacitor to establish a voltage differential between the output and the MOSFET source.

摘要翻译： 使用耗尽型MOSFET来配置驱动器电路以在输出电容器两端提供输出电压。 驱动器电路包括位于MOSFET的两个端子之间的电阻器。 在n沟道耗尽型MOSFET的情况下，电阻器耦合到源极和栅极。 电路是电流可控的耗尽驱动器，通过驱动反向电流通过电阻器来关断耗尽型MOSFET，以在栅极处相对于源极建立负电位。 齐纳二极管耦合在耗尽型MOSFET的源极和输出电容器之间，以在输出和MOSFET源之间建立电压差。

公开(公告)号：US20140266027A1

公开(公告)日：2014-09-18

申请号：US13865038

申请日：2013-04-17

申请人： Flextronics AP, LLC

发明人： Mark Telefus

IPC分类号： H02J7/02

CPC分类号： H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02M3/28 ,  H02M3/335 ,  H02M3/33507 ,  H03K17/00 ,  H04B5/0037

摘要： A power transmission pad is configured to provide wireless power transmission to multiple portable electronic devices where each device is orientation-free relative to the pad. The power transmission pad is also configured to be power adaptive by changing the power transmission level depending on the number of devices being concurrently charged. Each device, is placed within the magnetic field for the purpose of charging the device battery. The power transmission pad includes a sweep frequency generator for generating power transmissions across a frequency spectrum. The number of devices to be charged is determined as well as an optimal frequency for maximum energy transfer to each device. A single combined optimal frequency is determined using the optimal frequencies determined for each individual device. The sweep frequency generator is locked to the single combined optimal frequency and a power transmission level is set according to the number of devices.

摘要翻译： 电力传输焊盘被配置为向多个便携式电子设备提供无线电力传输，其中每个设备相对于焊盘是无取向的。 功率传输焊盘还被配置为通过根据同时充电的设备的数量来改变功率传输电平来进行功率自适应。 每个器件都放置在磁场内，以便为器件电池充电。 功率传输焊盘包括用于在频谱上产生功率传输的扫频频率发生器。 确定要充电的设备数量以及最大能量传输到每个设备的最佳频率。 使用为每个单独设备确定的最佳频率来确定单个组合最佳频率。 扫频发生器被锁定到单个组合最优频率，根据设备数量设置功率传输电平。