公开(公告)号：US07898825B2

公开(公告)日：2011-03-01

申请号：US12054301

申请日：2008-03-24

申请人： Michael D Mulligan ,  Philip John Crawley ,  John Camagna

发明人： Michael D Mulligan ,  Philip John Crawley ,  John Camagna

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0025

摘要： A current-mode controller comprises an inductance element, at least one semiconductor switch coupled to the inductance element, and a ramp compensator coupled to sense an indication of current through the inductance element and coupled to control the at least one semiconductor switch that senses current during on-time of the DC-DC converter, infers current during off-time of the DC-DC converter, and determines a slope compensation signal based on the sensed and inferred currents.

摘要翻译： 电流模式控制器包括电感元件，耦合到电感元件的至少一个半导体开关和耦合以感测通过电感元件的电流的指示的斜坡补偿器，并被耦合以控制在至少一个半导体开关中感测电流的电流 DC-DC转换器的导通时间在DC-DC转换器的截止时间期间推断电流，并且基于感测和推断的电流来确定斜率补偿信号。

公开(公告)号：US20090237058A1

公开(公告)日：2009-09-24

申请号：US12054301

申请日：2008-03-24

申请人： Michael D. Mulligan ,  Philip John Crawley ,  John Camagna

发明人： Michael D. Mulligan ,  Philip John Crawley ,  John Camagna

IPC分类号： G05F1/00

CPC分类号： H02M3/33507 ,  H02M2001/0025

摘要： A current-mode controller comprises an inductance element, at least one semiconductor switch coupled to the inductance element, and a ramp compensator coupled to sense an indication of current through the inductance element and coupled to control the at least one semiconductor switch that senses current during on-time of the DC-DC converter, infers current during off-time of the DC-DC converter, and determines a slope compensation signal based on the sensed and inferred currents.

摘要翻译： 电流模式控制器包括电感元件，耦合到电感元件的至少一个半导体开关和耦合以感测通过电感元件的电流的指示的斜坡补偿器，并被耦合以控制在至少一个半导体开关中感测电流的电流 DC-DC转换器的导通时间在DC-DC转换器的截止时间期间推断电流，并且基于感测和推断的电流来确定斜率补偿信号。

公开(公告)号：US20090327766A1

公开(公告)日：2009-12-31

申请号：US12165356

申请日：2008-06-30

申请人： Sajol Ghoshal ,  Abbas Hage ,  John Camagna ,  Philip John Crawley

发明人： Sajol Ghoshal ,  Abbas Hage ,  John Camagna ,  Philip John Crawley

IPC分类号： G06F1/26

CPC分类号： G06F1/266 ,  H04L12/10

摘要： A power over Ethernet (PoE) system has a reclassification functionality. The illustrative PoE system comprises a powered device (PD) and a power sourcing equipment (PSE) communicatively coupled to the PD. A classification identification component coupled to the PD encodes a classification value. A classification identification component can typically be implemented as a classification resistor, although any other suitable component such as a capacitor, inductor, register, or other structure or method can otherwise be implemented. The PoE system can further comprise a reclassification register in a non-volatile memory that stores a value indicative of a new classification state and a new classification identifier and a power switch that powers the powered device to a classification voltage. A PD controller is coupled to the powered device that reads the value indicative of the new classification state and, if the new classification state is asserted, reads the new classification identifier and sets classification according to the new classification identifier. If the new classification state is not asserted, the PD controller sets classification according to the classification identification component.

摘要翻译： 以太网供电（PoE）系统具有重新分类功能。 说明性的PoE系统包括通信地耦合到PD的供电设备（PD）和电源设备（PSE）。 耦合到PD的分类识别组件对分类值进行编码。 通常可以将分类识别组件实现为分类电阻器，但是可以实现诸如电容器，电感器，寄存器或其它结构或方法的任何其它合适的组件。 PoE系统还可以包括在非易失性存储器中存储指示新分类状态的值的重新分类寄存器和新的分类标识符，以及将被供电的设备供电到分类电压的电源开关。 PD控制器耦合到被动设备，其读取指示新分类状态的值，并且如果新分类状态被断言，则读取新的分类标识符并根据新的分类标识符进行分类。 如果新的分类状态未被确认，则PD控制器根据分类识别组件设置分类。

公开(公告)号：US20100054001A1

公开(公告)日：2010-03-04

申请号：US12198802

申请日：2008-08-26

申请人： Kenneth Dyer ,  Sajol Ghoshal ,  Philip John Crawley ,  John Camagna

发明人： Kenneth Dyer ,  Sajol Ghoshal ,  Philip John Crawley ,  John Camagna

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/4225 ,  Y02B70/126

摘要： A power converter is configured for usage in a power factor correction system. The power converter comprises a transformer with a primary winding and a secondary winding which isolates a primary side from a secondary side. A primary side switch is coupled to the primary winding. An isolator coupled to the primary side switch isolates the primary side from the secondary side and comprises a signal pathway passing a digital signal from the primary side to the secondary side. Power factor correction circuitry is coupled to the primary side switch and adjusts electric load characteristics to improve power factor toward unity.

摘要翻译： 功率转换器被配置为用于功率因数校正系统。 功率转换器包括具有初级绕组的变压器和将初级侧与次级侧隔离的次级绕组。 初级侧开关耦合到初级绕组。 耦合到初级侧开关的隔离器将初级侧与次级侧隔离，并且包括将数字信号从初级侧传递到次级侧的信号路径。 功率因数校正电路耦合到初级侧开关，并调整电负载特性以提高功率因数。

公开(公告)号：US20060251188A1

公开(公告)日：2006-11-09

申请号：US11327128

申请日：2006-01-06

申请人： Philip Crawley ,  John Camagna ,  Amit Gattani

发明人： Philip Crawley ,  John Camagna ,  Amit Gattani

IPC分类号： H04L25/06

CPC分类号： H04L25/0266 ,  H04L12/12 ,  Y02D50/40 ,  Y02D50/42

摘要： In a network device, an interface is coupled between an Ethernet physical layer (PHY) module and a network connector, and comprises at least one pair of pins coupled to output connections of the Ethernet physical layer (PHY), a direct current (DC) blocking capacitor coupled to each pin, and a common-mode suppression amplifier coupled between the paired pins.

摘要翻译： 在网络设备中，接口耦合在以太网物理层（PHY）模块和网络连接器之间，并且包括耦合到以太网物理层（PHY）的输出连接的至少一对引脚，直流（DC） 耦合到每个引脚的阻塞电容器和耦合在所述成对引脚之间的共模抑制放大器。

公开(公告)号：US20060218422A1

公开(公告)日：2006-09-28

申请号：US11352756

申请日：2006-02-13

申请人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

发明人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

IPC分类号： G06F1/00

CPC分类号： H04L12/10 ,  H04L12/40136 ,  H04L49/351 ,  H04L49/40 ,  Y02D50/10

摘要： Embodiments of the present invention provide a power source equipment (PSE) network device operable to provide a network signal that may include both power and data. This PSE network device includes a network connector and an integrated circuit. The network connector physically couples the PSE network device to the network. The integrated circuit further includes a power feed circuit. This power feed circuit is operable to draw and balance a plurality of power signals from an isolated power supply. Then the power feed circuit may combine and pass the received data signals and power signal as a single network signal. A PSE controller electrically couples to the integrated circuit but is not necessarily part of the integrated circuit. The PSE controller is operable to govern the production and distribution of the power portion of the network signal.

摘要翻译： 本发明的实施例提供一种电源设备（PSE）网络设备，其可操作以提供可包括电力和数据的网络信号。 该PSE网络设备包括网络连接器和集成电路。 网络连接器将PSE网络设备物理耦合到网络。 集成电路还包括馈电电路。 该供电电路可操作以平衡来自隔离电源的多个功率信号。 然后，馈电电路可以将接收到的数据信号和功率信号组合并传递为单个网络信号。 PSE控制器电耦合到集成电路，但不一定是集成电路的一部分。 PSE控制器可操作地控制网络信号的功率部分的产生和分配。

公开(公告)号：US20060218421A1

公开(公告)日：2006-09-28

申请号：US11325210

申请日：2006-01-03

申请人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

发明人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

IPC分类号： G06F1/00

CPC分类号： H04L12/10

摘要： Embodiments of the present invention provide a power feed circuit operable to supply an Ethernet power signal to a coupled Ethernet network. This power feed circuit includes a number of input nodes, differential transistor pairs, active control circuits, insertion loss control limit circuits and output nodes. The input nodes receive a first power signal such as that provided by an isolated 48 volt power supply. Each transistor of the differential transistor pairs couples to one input node. These differential transistor pairs draw currents which combine to produce a power signal component of the Ethernet power signal. The active control circuits sense the currents drawn by each transistor and are operable to apply a feedback signal to the differential transistor pairs based on the second circuit. Additionally, the insertion loss control limit circuit may sense the power and/or data rate associated with the data signal component of the Ethernet power signal. This then enables the power signal component to be adjusted. By considering the power of both the power signal component and data signal component, the overall power may be limited to prevent damage to downstream power devices. At least one twisted pair couples to each differential transistor pair's output node and is operable to pass the Ethernet power signal.

摘要翻译： 本发明的实施例提供了可操作以将以太网功率信号提供给耦合以太网的供电电路。 该馈电电路包括多个输入节点，差分晶体管对，有源控制电路，插入损耗控制限制电路和输出节点。 输入节点接收第一功率信号，例如由隔离的48伏特电源提供的功率信号。 差分晶体管对的每个晶体管耦合到一个输入节点。 这些差分晶体管对画出组合产生以太网功率信号的功率信号分量的电流。 主动控制电路感测由每个晶体管汲取的电流，并且可操作以基于第二电路将反馈信号施加到差分晶体管对。 此外，插入损耗控制限制电路可以感测与以太网功率信号的数据信号分量相关联的功率和/或数据速率。 这样就可以调整功率信号分量。 通过考虑功率信号分量和数据信号分量的功率，可以限制总功率以防止对下游功率器件的损坏。 至少一对双绞线耦合到每个差分晶体管对的输出节点，并且可操作地传递以太网功率信号。

公开(公告)号：US20060215343A1

公开(公告)日：2006-09-28

申请号：US11258972

申请日：2005-10-26

申请人： John Camagna ,  Sajol Ghoshal

发明人： John Camagna ,  Sajol Ghoshal

IPC分类号： H02H3/22

CPC分类号： H04M3/18 ,  H04L12/10

摘要： Embodiments of the present invention provide an improved ESD protection circuit within a power over Ethernet (PoE) network device operable to handle a network signal that may include both power and data. This PoE network device includes a network connector, an integrated circuit (IC) and an ESD protection circuit. The network connector physically couples the PoE network device to the network. The IC couples to the ESD protection circuit, wherein the IC further includes a power feed circuit. This power feed circuit is operable to handle network signals containing both data signals and power signals. The ESD protection circuits shunts ESD events to an ESD capacitance and then dissipates the ESD event through a discharge path in order to reduce the energy associated with the ESD event and dissipated within the IC.

摘要翻译： 本发明的实施例提供了一种可在以太网供电（PoE）网络设备中改进的ESD保护电路，其可操作以处理可包括电力和数据的网络信号。 该PoE网络设备包括网络连接器，集成电路（IC）和ESD保护电路。 网络连接器将PoE网络设备物理耦合到网络。 IC耦合到ESD保护电路，其中IC还包括馈电电路。 该供电电路可操作以处理包含数据信号和功率信号的网络信号。 ESD保护电路将ESD事件分流到ESD电容，然后通过放电路径消散ESD事件，以减少与ESD事件相关的能量并在IC内消散。

公开(公告)号：US20060214253A1

公开(公告)日：2006-09-28

申请号：US11282804

申请日：2005-11-18

申请人： John Camagna ,  Sajol Ghoshal

发明人： John Camagna ,  Sajol Ghoshal

IPC分类号： H01L29/00

CPC分类号： G06F1/266 ,  Y10S370/91

摘要： Embodiments of the present invention provide an integrated circuit (IC) having an integrated DC-DC power converter therein. This IC is operable to support the distribution of combined power and data signals in a network environment such as an Ethernet network according to protocols such as the power over Ethernet (PoE) protocol. The IC includes a DC-DC power converter, a power feed circuit, and a network physical layer (PHY) module, wherein the PHY module may contain fine line structures susceptible to damage when exposed to excessive voltages. To prevent or reduce the likelihood of damage to the PHY module from voltages supplied to the DC-DC power converter, a common substrate ground is shared between the IC components.

摘要翻译： 本发明的实施例提供一种其中具有集成DC-DC功率转换器的集成电路（IC）。 该IC可操作以根据诸如以太网供电（PoE）协议的协议在诸如以太网的网络环境中支持组合的电力和数据信号的分配。 IC包括DC-DC电力转换器，馈电电路和网络物理层（PHY）模块，其中PHY模块可以包含当暴露于过大电压时容易受到损坏的细线结构。 为了防止或降低由提供给DC-DC电力转换器的电压而损坏PHY模块的可能性，在IC组件之间共享公共衬底接地。

公开(公告)号：US20060218418A1

公开(公告)日：2006-09-28

申请号：US11209950

申请日：2005-08-23

申请人： John Camagna ,  Sajol Ghoshal

发明人： John Camagna ,  Sajol Ghoshal

IPC分类号： G06F1/26

CPC分类号： H04L12/10 ,  H04L12/40045

摘要： The present invention provides a method to at least partially power an Ethernet device from a plurality of balanced network power signals received through a network connection. This involves attaching the network device to the network, wherein network signals are received and contain both power signals and/or data signals. These network signals may be passed through surge protection and power-conditioning circuitry wherein the output of these circuits may be provided to a power absorbing circuit. This power absorbing circuit may separate the communication signal and power signal from the network signal. The communication signal may be passed to a network physical layer while the power signal may be passed to a power distribution module. Additionally, because certain embodiments may provide multiple pairs of network power signals to the power absorbing circuit, the current or power associated with each power signal must be sensed and balanced. This may be done with an active control circuit. The balanced power signals may then be supplied from the power absorbing circuit to the network-attached device in order to at least partially power the network-attached device.