公开(公告)号：US07487379B2

公开(公告)日：2009-02-03

申请号：US11283154

申请日：2005-11-18

申请人： Hai N. Nguyen ,  Raymond Pinkham ,  Yuanping Chen

发明人： Hai N. Nguyen ,  Raymond Pinkham ,  Yuanping Chen

IPC分类号： G06F1/04 ,  G06F1/12 ,  H03D3/24

CPC分类号： H03L7/08 ,  G06F1/10 ,  G06F1/3203 ,  G06F1/324 ,  Y02D10/126

摘要： An integrated circuit includes a phase-locked-loop with fast clock synchronization recovery. A phase frequency detector is configured to receive a system clock signal and a feedback clock signal and to generate a comparison signal. A clock generator is configured to general a first clock signal based on the comparison signal, and an internal clock signal. A controller coupled to the clock generator and configured to deliver a mesh clock signal to a global clock mesh. A synchronizer coupled to the control logic and configured to generate a feedback clock signal to the phase frequency detector. The mesh clock signal is provided from the global clock mesh to the synchronizer. Advantages of the invention include the ability to operate the integrated circuit in a sleep state with a slow clock rate and then quickly recover to an operational clock rate.

摘要翻译： 集成电路包括具有快速时钟同步恢复的锁相环。 相位频率检测器被配置为接收系统时钟信号和反馈时钟信号并产生比较信号。 时钟发生器被配置为基于比较信号和内部时钟信号来概括第一时钟信号。 耦合到时钟发生器并被配置为将网状时钟信号传送到全局时钟网络的控制器。 耦合到控制逻辑并被配置为产生到相位频率检测器的反馈时钟信号的同步器。 网格时钟信号从全局时钟网格提供给同步器。 本发明的优点包括以慢时钟速率操作处于睡眠状态的集成电路，然后快速恢复到操作时钟速率的能力。

公开(公告)号：US07285947B2

公开(公告)日：2007-10-23

申请号：US11216732

申请日：2005-08-31

申请人： Reynaldo P. Domingo ,  Masud Reza ,  Hai N. Nguyen

发明人： Reynaldo P. Domingo ,  Masud Reza ,  Hai N. Nguyen

IPC分类号： G01R11/32

CPC分类号： G01R21/07 ,  G01R21/133

摘要： A power meter receives an output-voltage and a current-indicative signal generated by at least one power supply of an electronic system. The output voltage powers at least one electronic component of the electronic system. The current-indicative signal indicates a percentage of a maximum output current capacity at which the power supply is producing current. From the output voltage and the current-indicative signal, the power meter determines the input power received by the power supply.

摘要翻译： 功率计接收由电子系统的至少一个电源产生的输出电压和电流指示信号。 输出电压为电子系统的至少一个电子部件供电。 电流指示信号表示电源产生电流的最大输出电流容量的百分比。 功率计从输出电压和电流指示信号确定电源接收的输入功率。

公开(公告)号：US07105950B2

公开(公告)日：2006-09-12

申请号：US10672522

申请日：2003-09-26

申请人： Mohamed A. Bemat ,  Hai N. Nguyen

发明人： Mohamed A. Bemat ,  Hai N. Nguyen

IPC分类号： H02J1/10

CPC分类号： G06F1/3203 ,  H02J1/102 ,  Y10T307/549 ,  Y10T307/944

摘要： A system may include a plurality of loads, a plurality of power supplies adapted to provide power to the loads, and control logic coupled to the power supplies. The control logic may determine whether output current from at least one of the power supplies to a load is below a lower threshold and, if so, may cause at least one of the power supplies to be disabled.

摘要翻译： 系统可以包括多个负载，适于向负载提供电力的多个电源以及耦合到电源的控制逻辑。 控制逻辑可以确定来自至少一个电源到负载的输出电流是否低于较低阈值，如果是，则可以使电源中的至少一个被禁用。

公开(公告)号：US4505257A

公开(公告)日：1985-03-19

申请号：US442242

申请日：1982-11-17

申请人： Hai N. Nguyen

发明人： Hai N. Nguyen

IPC分类号： F24J2/44 ,  F24J2/46 ,  F24J3/02

CPC分类号： F24J2/4647 ,  F24J2/44 ,  Y02E10/40

摘要： In an all liquid flat plate type solar collector having risers therein, the risers having inlet and outlet portions, the improvement comprises providing a single header for servicing the risers and arranging the risers inlet and outlet portions within the header so as to obtain flow through the risers using the velocity effect or dynamic effect of flow through the header.

摘要翻译： 在其中具有立管的全液平板式太阳能收集器中，提升管具有入口和出口部分，改进之处在于提供用于维修立管的单个集管，并且将上升管入口和出口部分设置在集管内，以便获得流过 立管使用速度效应或通过头部流动的动态效应。

公开(公告)号：USD625252S1

公开(公告)日：2010-10-12

申请号：US29298475

申请日：2007-12-05

申请人： Hai N. Nguyen ,  Mohamed Amin Bemat

设计人： Hai N. Nguyen ,  Mohamed Amin Bemat

公开(公告)号：US20090147459A1

公开(公告)日：2009-06-11

申请号：US11951311

申请日：2007-12-05

申请人： Hai N. Nguyen ,  Mohamed Amin Bemat

发明人： Hai N. Nguyen ,  Mohamed Amin Bemat

IPC分类号： H05K5/02 ,  H01S4/00 ,  A47B81/00

CPC分类号： H05K7/1492 ,  G06F1/188 ,  Y10T29/49002

摘要： A system, in certain embodiments, may include a server power supply having a modular chassis having dimensions standardized across a plurality of different servers. The dimensions may be configured to fit the modular chassis uniformly within receptacles of the plurality of different servers. A method of manufacture, in certain embodiments, may include providing a server power supply having a modular chassis with dimensions standardized across a plurality of different servers. Again, the dimensions may be configured to fit the modular chassis uniformly within receptacles of the plurality of different servers.

摘要翻译： 在某些实施例中，系统可以包括服务器电源，其具有具有跨多个不同服务器标准化的尺寸的模块化机箱。 尺寸可以被配置成将模块化底盘均匀地装配在多个不同的服务器的插座内。 在某些实施例中，制造的方法可以包括提供具有标准化跨越多个不同服务器的尺寸的模块化底盘的服务器电源。 再次，尺寸可以被配置成将模块化底盘均匀地装配在多个不同服务器的插座内。

公开(公告)号：US07053593B2

公开(公告)日：2006-05-30

申请号：US10867457

申请日：2004-06-14

申请人： Mohamed Amin Bemat ,  Reynaldo P. Domingo ,  Hai N Nguyen

发明人： Mohamed Amin Bemat ,  Reynaldo P. Domingo ,  Hai N Nguyen

IPC分类号： G05F1/40

CPC分类号： H02H7/1213 ,  H02M1/32 ,  H02M3/1584

摘要： A DC-to-DC converter comprises a first power module, at least a second power module coupled to the first power module, and a protection circuit coupled to the first and second power modules. The protection circuit causes a system power good signal to be at a state indicative of a power problem when the protection circuit detects that a switching node of one of the power modules has ceased switching.

摘要翻译： DC-DC转换器包括第一功率模块，耦合到第一功率模块的至少第二功率模块和耦合到第一和第二功率模块的保护电路。 当保护电路检测到一个电源模块的交换节点已经停止切换时，保护电路使得系统电源良好信号处于表示电力问题的状态。

公开(公告)号：US07015682B2

公开(公告)日：2006-03-21

申请号：US10354745

申请日：2003-01-30

申请人： Jose A. Santin ,  Md. Masud Reza ,  Atluri Rama Prasad ,  Hai N. Nguyen

发明人： Jose A. Santin ,  Md. Masud Reza ,  Atluri Rama Prasad ,  Hai N. Nguyen

IPC分类号： G05F1/44

CPC分类号： G05F1/70

摘要： The specification may disclose a switching power supply operated in a discontinuous current power factor corrected mode, having multiple boost circuits or boost modules, and controlled by a digital signal processor. The digital signal processor may implement a control scheme whereby the duty cycle of the switching signals applied to the boost modules may be controlled, in part, by the amount of power delivered to the load in the previous half cycle of the source voltage. In another aspect, an output voltage correction to the switching signals may be applied at the end of each half cycle, which may result in voltage correction at twice the source frequency.

摘要翻译： 本说明书可以公开以不连续电流功率因数校正模式操作的开关电源，具有多个升压电路或升压模块，并由数字信号处理器控制。 数字信号处理器可以实现一种控制方案，由此施加到升压模块的开关信号的占空比可以部分地由在源电压的前一半周期内递送给负载的功率量来控制。 在另一方面，可以在每个半周期结束时施加对开关信号的输出电压校正，这可能导致源频率的两倍的电压校正。

公开(公告)号：US5455757A

公开(公告)日：1995-10-03

申请号：US188484

申请日：1994-01-28

申请人： Hai N. Nguyen ,  James S. Dinh

发明人： Hai N. Nguyen ,  James S. Dinh

IPC分类号： H02M3/335

CPC分类号： H02M3/33569

摘要： A power converter including a complementary regeneration circuit for eliminating oscillations and conserving leakage energy to increase the efficiency of a flyback power converter. The complementary regeneration circuit includes a regeneration capacitor, a regeneration switch, a diode and appropriate timing circuitry to switch the regeneration capacitor in and out of the circuit at the appropriate times. Due to the operation of the regeneration switch, the capacitance of the regeneration capacitor is much larger than a typical snubber/clamp capacitor, so that it overdamps the circuit eliminating voltage overshoot typically appearing across the primary switch. The regeneration capacitor charges with regeneration energy and drives negative current into the primary inductor, holding the voltage across the primary switch constant when the secondary current goes to zero. When the regeneration switch is turned off, the negative current in the primary inductor drains the capacitance in the primary switch, which activates the inherent diode of the primary switch causing low voltage across the primary switch when it is turned on. A simple resistor or transistor circuit may be added between the input voltage and the PWM timing circuit to change the frequency of operation to compensate the regeneration energy for changes in the input voltage. Similarly, a resistive element coupled between the PWM timing circuit and an auxiliary voltage having a voltage proportional to the output voltage changes the operating frequency to compensate the regeneration energy for changes in the output voltage.

摘要翻译： 一种功率转换器，包括用于消除振荡并且节省泄漏能量以提高回扫功率转换器的效率的互补再生电路。 补充再生电路包括再生电容器，再生开关，二极管和适当的定时电路，用于在适当的时间将再生电容器进入和退出电路。 由于再生开关的操作，再生电容器的电容远远大于典型的缓冲器/钳位电容器，因此其过电流消除了通常出现在主开关上的电压过冲。 再生电容器用再生能量充电，并将负电流驱动到主电感器中，当次级电流变为零时，保持主开关两端的电压恒定。 当再生开关关闭时，初级电感器中的负电流消耗了初级开关中的电容，当初级开关导通时，初级开关的固有二极管在主开关两端产生低电压。 可以在输入电压和PWM定时电路之间添加简单的电阻器或晶体管电路，以改变操作频率以补偿用于输入电压变化的再生能量。 类似地，耦合在PWM定时电路和具有与输出电压成正比的电压的辅助电压之间的电阻元件改变工作频率，以补偿再生能量以改变输出电压。

公开(公告)号：US5402055A

公开(公告)日：1995-03-28

申请号：US954334

申请日：1992-09-30

申请人： Hai N. Nguyen

发明人： Hai N. Nguyen

IPC分类号： H02J7/00 ,  H02J7/04

CPC分类号： H02J7/0091 ,  H02J7/008

摘要： A differential input comparator for controlling the output voltage of an AC adapter to track the voltage of a rechargeable battery during trickle charge. An output voltage sensing circuit typically used to regulate the AC adapter output voltage at a maximum level is modified to regulate the output voltage at a minimum DC voltage approximately equivalent to a fully discharged battery plus a nominal voltage level. The differential input comparator is coupled to a current limiter coupled in the charge path of the battery and to the sense signal to provide a separate current path used to modify the voltage level of the sense signal. The differential input comparator regulates the voltage across the current limiter to the nominal voltage level by controlling the AC adapter output voltage through the sense signal during trickle charge of the battery.

摘要翻译： 差分输入比较器，用于控制交流电适配器的输出电压，以跟踪充电电池中的充电电池的电压。 通常用于将AC适配器输出电压调节到最大电平的输出电压感测电路被修改为在大约等于完全放电的电池加上额定电压电平的最小DC电压上调节输出电压。 差分输入比较器耦合到耦合在电池的电荷路径中的限流器和感测信号，以提供用于修改感测信号的电压电平的单独的电流路径。 差分输入比较器通过在电池涓流充电期间通过感测信号控制AC适配器输出电压，将电流限制器两端的电压调节到额定电压电平。