公开(公告)号：US08279144B2

公开(公告)日：2012-10-02

申请号：US12183492

申请日：2008-07-31

申请人： Bin Zhao ,  Jack W. Cornish ,  Brian B. Horng ,  Andrew M Kameya ,  Jan Krellner ,  Kenneth C. Kwok ,  Victor K. Lee ,  Weizhuang W. Xin

发明人： Bin Zhao ,  Jack W. Cornish ,  Brian B. Horng ,  Andrew M Kameya ,  Jan Krellner ,  Kenneth C. Kwok ,  Victor K. Lee ,  Weizhuang W. Xin

IPC分类号： G09G3/32

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  H05B33/086

摘要： Disclosed are example techniques for frame-based power management in a light emitting diode (LED) system having a plurality of LED strings. A voltage source provides an output voltage to drive the LED strings. An LED driver generates a frame timing reference representative of the frame rate or display timing of a series of image frames to be displayed via the LED system. An update reference is generated from the frame timing reference. The LED driver monitors one or more operating parameters of the LED system. In response to update triggers marked by the update reference, the LED driver adjusts the output voltage of the voltage source based on the status of each of the one or more monitored operating parameters (either from the previous update period or determined in response to the update trigger), thereby synchronizing the updating of the output voltage to the frame rate (or a virtual approximation of the frame rate) of the video being displayed.

摘要翻译： 公开了具有多个LED串的发光二极管（LED）系统中用于基于帧的电源管理的示例技术。 电压源提供输出电压来驱动LED串。 LED驱动器生成表示要通过LED系统显示的一系列图像帧的帧速率或显示定时的帧定时参考。 从帧定时参考生成更新参考。 LED驱动器监视LED系统的一个或多个操作参数。 响应于由更新参考标记的更新触发器，LED驱动器基于一个或多个监视的操作参数中的每一个的状态来调节电压源的输出电压（从先前的更新周期或响应于更新确定） 触发），从而将输出电压的更新同步于正在显示的视频的帧速率（或帧速率的虚拟近似）。

公开(公告)号：US20100156315A1

公开(公告)日：2010-06-24

申请号：US12340985

申请日：2008-12-22

申请人： Bin Zhao ,  Jack W. Cornish ,  Brian B. Horng ,  Andrew M. Kameya ,  Jan Krellner ,  Kenneth C. Kwok ,  Victor K. Lee ,  Weizhuang W. Xin

发明人： Bin Zhao ,  Jack W. Cornish ,  Brian B. Horng ,  Andrew M. Kameya ,  Jan Krellner ,  Kenneth C. Kwok ,  Victor K. Lee ,  Weizhuang W. Xin

IPC分类号： H05B41/36

CPC分类号： H05B33/0818 ,  H05B33/0827 ,  H05B33/0851

摘要： Power management in a light emitting diode (LED) system having a plurality of LED strings is disclosed. A voltage source provides an output voltage to drive a plurality of LED strings. An LED driver implements a feedback mechanism to monitor the tail voltages of the active LED strings to identify the minimum tail voltage and adjust the output voltage of the voltage source based on the lowest tail voltage. A loop calibration module of the LED driver calibrates the feedback mechanism of the LED driver based on a relationship between a digital code value used to generate a particular output voltage and another digital code value generated based on the minimum tail voltage resulting from the particular output voltage.

摘要翻译： 公开了具有多个LED串的发光二极管（LED）系统中的电源管理。 电压源提供输出电压以驱动多个LED串。 LED驱动器实现反馈机制来监测有源LED串的尾部电压以识别最小尾电压，并且基于最低的尾部电压来调节电压源的输出电压。 LED驱动器的回路校准模块基于用于产生特定输出电压的数字代码值与基于由特定输出电压产生的最小尾部电压产生的另一数字代码值之间的关系来校准LED驱动器的反馈机制 。

公开(公告)号：US20100026203A1

公开(公告)日：2010-02-04

申请号：US12183492

申请日：2008-07-31

申请人： Bin Zhao ,  Jack W. Cornish ,  Brian B. Horng ,  Andrew M. Kameya ,  Jan Krellner ,  Kenneth C. Kwok ,  Victor K. Lee ,  Weizhuang W. Xin

发明人： Bin Zhao ,  Jack W. Cornish ,  Brian B. Horng ,  Andrew M. Kameya ,  Jan Krellner ,  Kenneth C. Kwok ,  Victor K. Lee ,  Weizhuang W. Xin

IPC分类号： H05B33/00

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  H05B33/086

摘要： Disclosed are example techniques for frame-based power management in a light emitting diode (LED) system having a plurality of LED strings. A voltage source provides an output voltage to drive the LED strings. An LED driver generates a frame timing reference representative of the frame rate or display timing of a series of image frames to be displayed via the LED system. An update reference is generated from the frame timing reference. The LED driver monitors one or more operating parameters of the LED system. In response to update triggers marked by the update reference, the LED driver adjusts the output voltage of the voltage source based on the status of each of the one or more monitored operating parameters (either from the previous update period or determined in response to the update trigger), thereby synchronizing the updating of the output voltage to the frame rate (or a virtual approximation of the frame rate) of the video being displayed.

摘要翻译： 公开了具有多个LED串的发光二极管（LED）系统中用于基于帧的电源管理的示例技术。 电压源提供输出电压来驱动LED串。 LED驱动器生成表示要通过LED系统显示的一系列图像帧的帧速率或显示定时的帧定时参考。 从帧定时参考生成更新参考。 LED驱动器监视LED系统的一个或多个操作参数。 响应于由更新参考标记的更新触发器，LED驱动器基于一个或多个监视的操作参数中的每一个的状态来调节电压源的输出电压（从先前的更新周期或响应于更新确定） 触发），从而将输出电压的更新同步于正在显示的视频的帧速率（或帧速率的虚拟近似）。

公开(公告)号：US08035315B2

公开(公告)日：2011-10-11

申请号：US12340985

申请日：2008-12-22

申请人： Bin Zhao ,  Jack W. Cornish ,  Brian B. Horng ,  Andrew M. Kameya ,  Jan Krellner ,  Kenneth C. Kwok ,  Victor K. Lee ,  Weizhuang W. Xin

发明人： Bin Zhao ,  Jack W. Cornish ,  Brian B. Horng ,  Andrew M. Kameya ,  Jan Krellner ,  Kenneth C. Kwok ,  Victor K. Lee ,  Weizhuang W. Xin

IPC分类号： H05B37/02 ,  G09G5/00

CPC分类号： H05B33/0818 ,  H05B33/0827 ,  H05B33/0851

摘要： Power management in a light emitting diode (LED) system having a plurality of LED strings is disclosed. A voltage source provides an output voltage to drive a plurality of LED strings. An LED driver implements a feedback mechanism to monitor the tail voltages of the active LED strings to identify the minimum tail voltage and adjust the output voltage of the voltage source based on the lowest tail voltage. A loop calibration module of the LED driver calibrates the feedback mechanism of the LED driver based on a relationship between a digital code value used to generate a particular output voltage and another digital code value generated based on the minimum tail voltage resulting from the particular output voltage.

摘要翻译： 公开了具有多个LED串的发光二极管（LED）系统中的电源管理。 电压源提供输出电压以驱动多个LED串。 LED驱动器实现反馈机制来监测有源LED串的尾部电压以识别最小尾电压，并且基于最低的尾部电压来调节电压源的输出电压。 LED驱动器的回路校准模块基于用于产生特定输出电压的数字代码值与基于由特定输出电压产生的最小尾部电压产生的另一数字代码值之间的关系来校准LED驱动器的反馈机制 。

公开(公告)号：US08456096B2

公开(公告)日：2013-06-04

申请号：US12816363

申请日：2010-06-15

申请人： Kenneth Kwok ,  Jan Krellner ,  Steven Ulbrich ,  Joon Park

发明人： Kenneth Kwok ,  Jan Krellner ,  Steven Ulbrich ,  Joon Park

IPC分类号： H05B37/02

CPC分类号： H05B33/0887 ,  H02M1/32 ,  H02M2001/0025 ,  H05B33/0818 ,  H05B33/0827

摘要： Circuits for regulating and/or controlling integrated circuits such as drivers and switching regulators generally include a first switch configured to control or regulate a current, voltage drop or voltage boost; a first regulator or driver configured to transmit first pulses to the first switch, the pulses having a first pulse width; and pulse width modulation circuitry configured to (i) reduce the first pulse width when a first thermal threshold is met and (ii) increase the first pulse width when a second thermal threshold is met, the second thermal threshold being less than the first thermal threshold.

摘要翻译： 用于调节和/或控制诸如驱动器和开关调节器的集成电路的电路通常包括被配置为控制或调节电流，电压降或升压的第一开关; 配置为将第一脉冲发送到第一开关的第一调节器或驱动器，所述脉冲具有第一脉冲宽度; 以及脉冲宽度调制电路，其被配置为（i）当满足第一热阈值时减小所述第一脉冲宽度，以及（ii）当满足第二热阈值时增加所述第一脉冲宽度，所述第二热阈值小于所述第一热阈值 。

公开(公告)号：US20110193542A1

公开(公告)日：2011-08-11

申请号：US12816363

申请日：2010-06-15

申请人： Kenneth KWOK ,  Jan Krellner ,  Steven Ulbrich ,  Joon Park

发明人： Kenneth KWOK ,  Jan Krellner ,  Steven Ulbrich ,  Joon Park

IPC分类号： G05F1/10

CPC分类号： H05B33/0887 ,  H02M1/32 ,  H02M2001/0025 ,  H05B33/0818 ,  H05B33/0827

摘要： The present invention provides circuits and methods for regulating and/or controlling integrated circuits such as drivers and switching regulators. The circuit generally includes a first switch configured to control or regulate a current, voltage drop or voltage boost; a first regulator or driver configured to transmit first pulses to the first switch, the pulses having a first pulse width; and pulse width modulation circuitry configured to (i) reduce the first pulse width when a first thermal threshold is met and (ii) increase the first pulse width when a second thermal threshold is met, the second thermal threshold being less than the first thermal threshold.

摘要翻译： 本发明提供用于调节和/或控制诸如驱动器和开关调节器的集成电路的电路和方法。 电路通常包括被配置为控制或调节电流，电压降或升压的第一开关; 配置为将第一脉冲发送到第一开关的第一调节器或驱动器，所述脉冲具有第一脉冲宽度; 以及脉冲宽度调制电路，其被配置为（i）当满足第一热阈值时减小所述第一脉冲宽度，以及（ii）当满足第二热阈值时增加所述第一脉冲宽度，所述第二热阈值小于所述第一热阈值 。

公开(公告)号：US06993693B2

公开(公告)日：2006-01-31

申请号：US10363773

申请日：2001-09-10

申请人： Michael Fitchett ,  Jan Krellner

发明人： Michael Fitchett ,  Jan Krellner

IPC分类号： G01R31/28 ,  H03M1/12

CPC分类号： G01R31/318541

摘要： An analogue/digital interface circuit is disclosed in which an integral bistable circuit has its state changed by the arrival of an incoming analogue signal, however transient, and irrespective of when it arrives relative to the clock signal driving the digital circuit. The use of a bistable (flip-flop) circuit enables each parth of the interface circuit to be traversed when scan test signals are applied to it. Concurrently with the application of such signals, an inhibition signal is applied to the analogue signal inlet to prevent the arrival of any subsequency analogue signals from changing the state of the signal-storage element.

摘要翻译： 公开了一种模拟/数字接口电路，其中整体双稳态电路的状态由输入的模拟信号的到达而改变，不管是瞬时的，并且不管它何时相对于驱动数字电路的时钟信号到达。 当使用扫描测试信号时，使用双稳态（触发器）电路可以使接口电路的每一部分都被遍历。 与这种信号的应用同时，抑制信号被施加到模拟信号入口以防止任何后续模拟信号的到达改变信号存储元件的状态。

公开(公告)号：US09112410B2

公开(公告)日：2015-08-18

申请号：US13441747

申请日：2012-04-06

申请人： Stephen Ulbrich ,  Jack Cornish ,  Kenneth Kwok ,  Jan Krellner

发明人： Stephen Ulbrich ,  Jack Cornish ,  Kenneth Kwok ,  Jan Krellner

IPC分类号： H02M3/158

CPC分类号： H02M3/1584

摘要： Power control systems and power control devices may include a power control chip having a power control module configured to generate a power stage control signal, and at least one power stage having a timing control module that is physically separate from the power control module. The timing control module may be configured to receive the power stage control signal and generate a timing control signal controlling at least one switch to regulate an output voltage of the at least one power stage. A related method may include generating power stage control information indicating an offset between an output voltage and a desired regulated output voltage, transmitting the power stage control information between modules that are physically separate, and timing signals for controlling a switching converter to regulate the output voltage. A related method of auto-configuring a power control system is also disclosed.

摘要翻译： 功率控制系统和功率控制装置可以包括功率控制芯片，功率控制芯片具有被配置为产生功率级控制信号的功率控制模块，以及具有物理上与功率控制模块分离的定时控制模块的至少一个功率级。 定时控制模块可以被配置为接收功率级控制信号并产生控制至少一个开关以调节至少一个功率级的输出电压的定时控制信号。 相关方法可以包括产生指示输出电压和期望的调节输出电压之间的偏移的功率级控制信息，在物理上分开的模块之间传输功率级控制信息，以及用于控制开关转换器以调节输出电压的定时信号 。 还公开了一种自动配置功率控制系统的相关方法。

公开(公告)号：US20130265022A1

公开(公告)日：2013-10-10

申请号：US13441747

申请日：2012-04-06

申请人： Stephen Ulbrich ,  Jack Cornish ,  Kenneth Kwok ,  Jan Krellner

发明人： Stephen Ulbrich ,  Jack Cornish ,  Kenneth Kwok ,  Jan Krellner

IPC分类号： G05F1/10

CPC分类号： H02M3/1584

摘要： Power control systems and power control devices may include a power control chip having a power control module configured to generate a power stage control signal, and at least one power stage having a timing control module that is physically separate from the power control module. The timing control module may be configured to receive the power stage control signal and generate a timing control signal controlling at least one switch to regulate an output voltage of the at least one power stage. A related method may include generating power stage control information indicating an offset between an output voltage and a desired regulated output voltage, transmitting the power stage control information between modules that are physically separate, and timing signals for controlling a switching converter to regulate the output voltage. A related method of auto-configuring a power control system is also disclosed.

摘要翻译： 功率控制系统和功率控制装置可以包括具有功率控制模块的功率控制芯片，该功率控制模块被配置为产生功率级控制信号，以及至少一个功率级，具有与功率控制模块物理分离的定时控制模块。 定时控制模块可以被配置为接收功率级控制信号并产生控制至少一个开关以调节至少一个功率级的输出电压的定时控制信号。 相关方法可以包括产生指示输出电压和期望的调节输出电压之间的偏移的功率级控制信息，在物理上分开的模块之间传输功率级控制信息，以及用于控制开关转换器以调节输出电压的定时信号 。 还公开了一种自动配置功率控制系统的相关方法。

公开(公告)号：US08581659B2

公开(公告)日：2013-11-12

申请号：US12693407

申请日：2010-01-25

申请人： Steven Ulbrich ,  Kenneth Kwok ,  Jan Krellner ,  Joon Park

发明人： Steven Ulbrich ,  Kenneth Kwok ,  Jan Krellner ,  Joon Park

IPC分类号： G05F1/10

CPC分类号： G05F1/46

摘要： Current sources, systems including the current source, and methods for regulating and/or controlling a circuit using the current source. The current source is generally configured to (i) receive a reference current, a bias voltage and a feedback/input current and (ii) provide an output current. The systems generally include the current source, a circuit directly or indirectly receiving the output current, a bias source/generator configured to provide the bias voltage, and a current reference configured to sink or source a predetermined amount of current from or to the output current. The method generally includes (a) applying a bias voltage to the current source, the current source receiving an input current and providing an output current; (b) sinking or sourcing a reference current from or to the output current; (c) applying the output of the current source directly or indirectly to a regulated circuit; and (d) providing the input current from the regulated circuit.

摘要翻译： 电流源，包括电流源的系统，以及使用电流源调节和/或控制电路的方法。 电流源通常被配置为（i）接收参考电流，偏置电压和反馈/输入电流，以及（ii）提供输出电流。 系统通常包括电流源，直接或间接接收输出电流的电路，被配置为提供偏置电压的偏置源/发生器以及被配置为从输出电流吸收或输出预定量的电流的电流基准 。 该方法通常包括（a）向电流源施加偏置电压，电流源接收输入电流并提供输出电流; （b）将输出电流从或输出到输出电流; （c）将电流源的输出直接或间接施加到稳压电路; 和（d）从调节电路提供输入电流。