公开(公告)号：US08441309B2

公开(公告)日：2013-05-14

申请号：US13604989

申请日：2012-09-06

申请人： David Kung ,  Leif Lund

发明人： David Kung ,  Leif Lund

IPC分类号： G05F1/10

CPC分类号： G05F3/30

摘要： A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and second resistance values, R1 and R2, and third and second temperature coefficients, TC3 and TC2, respectively. The resistance values being such that a temperature coefficient of a difference between the base-emitter voltages of the first and second bipolar transistors, TC1, is substantially equal to TC2×(R2/(R1+R2))+TC3×(R1/R1+R2)), resulting in a reference current flowing through each of the first and second bipolar transistors that is substantially constant over temperature. A third resistor coupled between a node and the collector of the second bipolar transistor has a value such that a reference voltage generated at the node is substantially constant over temperature.

摘要翻译： 独立于温度的参考电路包括具有共同耦合的基极的第一和第二双极晶体管。 第一和第二电阻串联耦合在第二双极晶体管的发射极和地之间。 第一和第二电阻器分别具有第一和第二电阻值R1和R2，以及第三和第二温度系数TC3和TC2。 电阻值使得第一和第二双极晶体管的基极 - 发射极之间的电压TC1的温度系数基本上等于TC2×（R2 /（R1 + R2））+ TC3×（R1 / R1 + R2）），导致流经第一和第二双极晶体管中的每一个的参考电流在温度上基本恒定。 耦合在第二双极晶体管的节点和集电极之间的第三电阻器具有使得在节点处产生的参考电压在温度上基本恒定的值。

公开(公告)号：US20130083565A1

公开(公告)日：2013-04-04

申请号：US13248786

申请日：2011-09-29

申请人： Yury Gaknoki ,  David Kung

发明人： Yury Gaknoki ,  David Kung

IPC分类号： H02M3/335

CPC分类号： H02M3/33515 ,  H02M1/08 ,  H02M3/33523 ,  H02M2001/0025

摘要： An example controller for a power converter includes a feedback sampling circuit, drive logic and a false sampling prevention circuit. The feedback sampling circuit is coupled to sample a feedback signal received from a terminal of the controller and to generate a sample signal representative of a value of the feedback signal. The drive logic is coupled to the feedback sampling circuit and coupled to control the power switch to regulate an output of the power converter in response to the sample signal. The false sampling prevention circuit is coupled to receive a sampling complete signal that indicates when the sampling of the feedback signal is complete. The false sampling prevention circuit is further coupled to the drive logic to extend the off time of the power switch until the sampling complete signal indicates that the sampling of the feedback signal by the feedback sampling circuit is complete.

摘要翻译： 用于功率转换器的示例性控制器包括反馈采样电路，驱动逻辑和假采样防止电路。 反馈采样电路被耦合以对从控制器的端子接收的反馈信号进行采样，并产生表示反馈信号的值的采样信号。 驱动逻辑耦合到反馈采样电路并被耦合以响应于采样信号来控制功率开关来调节功率转换器的输出。 虚假采样防止电路被耦合以接收指示反馈信号的采样何时完成的采样完成信号。 假采样防止电路还耦合到驱动逻辑以延长电源开关的关断时间，直到采样完成信号指示反馈采样电路的反馈信号的采样完成为止。

公开(公告)号：US20120326697A1

公开(公告)日：2012-12-27

申请号：US13604989

申请日：2012-09-06

申请人： David Kung ,  Leif Lund

发明人： David Kung ,  Leif Lund

IPC分类号： G05F3/16

CPC分类号： G05F3/30

摘要： A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and second resistance values, R1 and R2, and third and second temperature coefficients, TC3 and TC2, respectively. The resistance values being such that a temperature coefficient of a difference between the base-emitter voltages of the first and second bipolar transistors, TC1, is substantially equal to TC2×(R2/(R1+R2))+TC3×(R1/R1+R2)), resulting in a reference current flowing through each of the first and second bipolar transistors that is substantially constant over temperature. A third resistor coupled between a node and the collector of the second bipolar transistor has a value such that a reference voltage generated at the node is substantially constant over temperature.

摘要翻译： 独立于温度的参考电路包括具有共同耦合的基极的第一和第二双极晶体管。 第一和第二电阻串联耦合在第二双极晶体管的发射极和地之间。 第一和第二电阻器分别具有第一和第二电阻值R1和R2，以及第三和第二温度系数TC3和TC2。 电阻值使得第一和第二双极晶体管的基极 - 发射极之间的电压TC1的温度系数基本上等于TC2×（R2 /（R1 + R2））+ TC3×（R1 / R1 + R2）），导致流经第一和第二双极晶体管中的每一个的参考电流在温度上基本恒定。 耦合在第二双极晶体管的节点和集电极之间的第三电阻器具有使得在节点处产生的参考电压在温度上基本恒定的值。

公开(公告)号：US20120105018A1

公开(公告)日：2012-05-03

申请号：US13345257

申请日：2012-01-06

申请人： Balu Balakrishnan ,  David Kung ,  Raymond Kenneth Orr ,  David Michael Hugh Matthews

发明人： Balu Balakrishnan ,  David Kung ,  Raymond Kenneth Orr ,  David Michael Hugh Matthews

IPC分类号： H02J7/00

CPC分类号： H02M1/32 ,  H02M1/12 ,  H02M1/126 ,  H02M1/36 ,  H02M2001/322

摘要： A switch is coupled to a control circuit and to an input of a power converter. The control circuit is coupled to drive the switch in a first operating mode to transfer energy from the input to an output of the power converter when an electrical energy source is coupled to the input of the power converter. The control circuit is coupled to drive the switch in a second operating mode when the electrical energy source is uncoupled from the input. A capacitance is coupled between input terminals of the input of the power converter and is discharged to a threshold voltage in less than a maximum period of time from when the electrical energy source is uncoupled from the input terminals. The control circuit is coupled to drive the switch to have a high average impedance in the first operating mode.

摘要翻译： 开关耦合到控制电路和功率转换器的输入端。 当电能源耦合到功率转换器的输入端时，控制电路被耦合以在第一操作模式下驱动开关以将能量从输入传递到功率转换器的输出端。 当电能源与输入端分离时，控制电路被耦合以在第二操作模式下驱动开关。 电容耦合在功率转换器的输入端的输入端之间，并且在电能从输入端分离之后的最小时间内被放电到阈值电压。 控制电路被耦合以驱动开关以在第一操作模式中具有高平均阻抗。

公开(公告)号：US08139384B2

公开(公告)日：2012-03-20

申请号：US12477058

申请日：2009-06-02

申请人： David Kung ,  William M. Polivka

发明人： David Kung ,  William M. Polivka

IPC分类号： H02M7/44

CPC分类号： H02M3/33523 ,  H02M2001/0009

摘要： An example controller includes a constant current control circuit and an integrator included in the constant current control circuit. The constant current control circuit is to be coupled to receive an input current sense signal, an input voltage sense signal, and an output voltage sense signal. The control circuit is adapted to regulate an output current of a power supply by generating a control signal to control switching of a switch. The integrator is coupled to integrate the input current sense signal during a switching period of the control signal to generate an integrated signal representative of a charge taken from an input voltage source of the power supply. The constant current control circuit is adapted to control the switching of the switch such that the integrated signal is proportional to a ratio of the output voltage sense signal to the input voltage sense signal.

摘要翻译： 示例性控制器包括恒流控制电路和包括在恒流控制电路中的积分器。 恒流控制电路将被耦合以接收输入电流感测信号，输入电压感测信号和输出电压感测信号。 控制电路适于通过产生控制信号来调节电源的输出电流来控制开关的切换。 耦合该积分器以在控制信号的开关周期期间集成输入电流感测信号，以产生代表从电源的输入电压源获取的电荷的积分信号。 恒流控制电路适于控制开关的开关，使得积分信号与输出电压感测信号与输入电压感测信号的比例成比例。

公开(公告)号：US08063622B2

公开(公告)日：2011-11-22

申请号：US12572952

申请日：2009-10-02

申请人： David Kung ,  Leif Lund

发明人： David Kung ,  Leif Lund

IPC分类号： G05F1/00 ,  G05F1/10

CPC分类号： H02M1/36 ,  H02M2001/0029

摘要： A circuit to control the slew rate of charging a capacitance using the capacitance is disclosed. An example circuit includes a regulator circuit to regulate a supply voltage during a normal operation mode of the circuit. A capacitance circuit is coupled to the regulator circuit. The regulator circuit is coupled to charge a capacitance between a first node and a second node of the capacitance circuit with a charge current. A slew rate control circuit is coupled to the regulator circuit and the capacitance circuit. The slew rate control circuit sets a slew rate of a voltage between the first and second nodes during a power up mode of the circuit.

摘要翻译： 公开了一种使用该电容来控制对电容充电的转换速率的电路。 示例电路包括调节器电路，以在电路的正常操作模式期间调节电源电压。 电容电路耦合到调节器电路。 该调节器电路被耦合以用充电电流对电容电路的第一节点和第二节点之间的电容进行充电。 压摆率控制电路耦合到调节器电路和电容电路。 压摆率控制电路在电路的上电模式期间设置第一和第二节点之间的电压的压摆率。

公开(公告)号：US20060279334A1

公开(公告)日：2006-12-14

申请号：US11466754

申请日：2006-08-23

申请人： Anthony Correale ,  Rajiv Joshi ,  David Kung ,  Zhigang Pan ,  Ruchir Puri

发明人： Anthony Correale ,  Rajiv Joshi ,  David Kung ,  Zhigang Pan ,  Ruchir Puri

IPC分类号： H03K19/0175

CPC分类号： H03K19/018521 ,  H03K19/0948

摘要： A level converter for interfacing two circuits supplied by different supply voltages, and integrated circuit including the level converter interfacing circuit in two different voltage islands. A first buffer is supplied by a virtual supply and receives an input signal from a lower voltage circuit. The first buffer drives a second buffer, which is supplied by a higher supply voltage. An output from the second buffer switches a supply select to selectively pass the higher supply voltage or a reduced supply voltage to the first buffer.

摘要翻译： 用于连接由不同电源电压提供的两个电路的电平转换器，以及包括在两个不同电压岛中的电平转换器接口电路的集成电路。 第一缓冲器由虚拟电源提供，并从低电压电路接收输入信号。 第一个缓冲器驱动第二个缓冲器，该缓冲器由较高的电源电压供电。 来自第二缓冲器的输出切换电源选择以选择性地将较高电源电压或降低的电源电压传递到第一缓冲器。

公开(公告)号：US20050114815A1

公开(公告)日：2005-05-26

申请号：US10720562

申请日：2003-11-24

申请人： Anthony Correale ,  David Kung ,  Douglass Lamb ,  Zhigang Pan ,  Ruchir Puri

发明人： Anthony Correale ,  David Kung ,  Douglass Lamb ,  Zhigang Pan ,  Ruchir Puri

IPC分类号： G06F17/50

CPC分类号： G06F17/5068 ,  G06F17/5045

摘要： A method and program product for optimizing level converter placement in a multi supply integrated circuit. Each level converter is placed at a minimum power point to minimize net power and transitional delay from a first (low) voltage net source through the level converter and to a second (higher) voltage net sink. Then, inefficient level converters are eliminated. Level converters with fanin cones below a selected minimum cone size are deleted and low voltage sources to the deleted level converter reverted. Higher voltage level circuit elements receiving inputs from multiple level converters are replaced with equivalent low voltage circuit elements. Low voltage buffer driving level converters are both replaced by a single said level converter.

摘要翻译： 一种用于优化多电源集成电路中的电平转换器放置的方法和程序产品。 每个电平转换器被放置在最小功率点以最小化净功率和从第一（低）电压净源通过电平转换器到第二（较高）电压净接收器的过渡延迟。 然后，消除了低效率的电平转换器。 具有低于选定的最小锥度尺寸的扇形锥体的电平转换器被删除，并且删除的电平转换器的低电压源恢复。 接收来自多电平转换器的输入的更高电压电平的电路元件被等效的低电压电路元件代替。 低电压缓冲器驱动电平转换器都由单个所述电平转换器代替。

公开(公告)号：US20150006491A1

公开(公告)日：2015-01-01

申请号：US13929475

申请日：2013-06-27

申请人： Min He ,  Frank Le ,  Hiren Kotadia ,  Hemant Puranik ,  Abhiram Gujjewar ,  David Kung

发明人： Min He ,  Frank Le ,  Hiren Kotadia ,  Hemant Puranik ,  Abhiram Gujjewar ,  David Kung

IPC分类号： G06F17/30

CPC分类号： G06F16/27

摘要： Systems and methods for just-in-time data quality assessment of best records created during data migration are disclosed. A data steward includes tools for creating and editing a best record creation strategy that defines how records from multiple systems will be integrated into target systems. At design time, the data steward can generate best record creation and validation rules based on the best record creation strategy. The data steward can apply the best record creation and validation rules to a sample of matched records from multiple data sources to generate a sample set of best records. The efficacy of the best record creation rules can be evaluated by assessing the number of fields in the sample set that fail the validation rules. During review, the validation rules can be applied to edits to the best records received from a human reviewer to ensure compliance with the best record creation strategy.

摘要翻译： 披露了在数据迁移期间创建的最佳记录的即时数据质量评估的系统和方法。 数据管家包括用于创建和编辑最佳记录创建策略的工具，该策略定义如何将来自多个系统的记录集成到目标系统中。 在设计时，数据管理员可以根据最佳记录创建策略生成最佳记录创建和验证规则。 数据管理员可以将最佳记录创建和验证规则应用于来自多个数据源的匹配记录的样本，以生成一组最佳记录。 可以通过评估样本集中失败验证规则的字段数来评估最佳记录创建规则的有效性。 在审查期间，验证规则可以应用于编辑从人类审阅者收到的最佳记录，以确保符合最佳记录创建策略。

公开(公告)号：US08797769B2

公开(公告)日：2014-08-05

申请号：US13248786

申请日：2011-09-29

申请人： Yury Gaknoki ,  David Kung ,  Michael Yue Zhang

发明人： Yury Gaknoki ,  David Kung ,  Michael Yue Zhang

IPC分类号： H02M3/335

CPC分类号： H02M3/33515 ,  H02M1/08 ,  H02M3/33523 ,  H02M2001/0025

摘要： An example controller for a power converter includes a feedback sampling circuit, drive logic and a false sampling prevention circuit. The feedback sampling circuit is coupled to sample a feedback signal received from a terminal of the controller and to generate a sample signal representative of a value of the feedback signal. The drive logic is coupled to the feedback sampling circuit and coupled to control the power switch to regulate an output of the power converter in response to the sample signal. The false sampling prevention circuit is coupled to receive a sampling complete signal that indicates when the sampling of the feedback signal is complete. The false sampling prevention circuit is further coupled to the drive logic to extend the off time of the power switch until the sampling complete signal indicates that the sampling of the feedback signal by the feedback sampling circuit is complete.

摘要翻译： 用于功率转换器的示例性控制器包括反馈采样电路，驱动逻辑和假采样防止电路。 反馈采样电路被耦合以对从控制器的端子接收的反馈信号进行采样，并产生表示反馈信号的值的采样信号。 驱动逻辑耦合到反馈采样电路并被耦合以响应于采样信号来控制功率开关来调节功率转换器的输出。 虚假采样防止电路被耦合以接收指示反馈信号的采样何时完成的采样完成信号。 假采样防止电路还耦合到驱动逻辑以延长电源开关的关断时间，直到采样完成信号指示反馈采样电路的反馈信号的采样完成为止。