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1. 发明授权

US06542027B2 Bandgap reference circuit with a pre-regulator 有权
公开(公告)号：US06542027B2
公开(公告)日：2003-04-01
申请号：US09989221
申请日：2001-11-20
申请人： Gang Zha , Solomon K. Ng
发明人： Gang Zha , Solomon K. Ng
IPC分类号： G05F1563
CPC分类号： G05F3/30
摘要： A bandgap reference circuit has a pre-regulator that achieves a low temperature coefficient through the use of a first component that generates a first voltage having a negative temperature coefficient and a second component coupled in series to the first component and which generates a second voltage having a positive temperature coefficient. This low temperature coefficient in the pre-regulator allows the bandgap reference circuit to output the bandgap voltage VBG with a low temperature coefficient.

2. 发明授权

US06344770B1 Bandgap reference circuit with a pre-regulator 有权
标题翻译：带隙预参考电路
公开(公告)号：US06344770B1
公开(公告)日：2002-02-05
申请号：US09643171
申请日：2000-08-21
申请人： Gang Zha , Solomon K. Ng
发明人： Gang Zha , Solomon K. Ng
IPC分类号： G05F1575
CPC分类号： G05F3/30
摘要： A bandgap reference circuit has a pre-regulator that achieves a low temperature coefficient through the use of a VBE multiplier and feedback from the output bandgap voltage VBG. This low temperature coefficient in the pre-regulator allows the bandgap reference circuit to output the bandgap voltage VBG with a low temperature coefficient.
摘要翻译：带隙参考电路具有通过使用VBE乘法器和来自输出带隙电压VBG的反馈来实现低温度系数的预调节器。预调节器中的这种低温度系数允许带隙基准电路以低温度系数输出带隙电压VBG。

3. 发明申请

US20070216382A1 LOW DROP-OUT LINEAR REGULATOR INCLUDING A STABLE COMPENSATION METHOD AND CIRCUIT FOR PARTICULAR USE IN AUTOMOTIVE APPLICATIONS 有权
标题翻译：低压降线性稳压器，包括稳定的补偿方法和电路，用于汽车应用中的特殊应用
公开(公告)号：US20070216382A1
公开(公告)日：2007-09-20
申请号：US11684434
申请日：2007-03-09
申请人： DaSong Lin , Gang Zha
发明人： DaSong Lin , Gang Zha
IPC分类号： G05F1/00
CPC分类号： G05F1/575
摘要： A compensated regulator includes a transconductance stage having a positive input for receiving a reference voltage, a negative input, and an output, an adjustable compensation block coupled between the output of the transconductance stage and ground, a feedback circuit having a first node coupled to the output of the compensated regulator, a second node coupled to the negative input of the transconductance stage, and a third node coupled to ground, and a driver stage having an input coupled to the output of the transconductance stage, a current output coupled to the output of the compensated regulator, and a sense output coupled to the adjustable compensation block.
摘要翻译：补偿稳压器包括跨导级，其具有用于接收参考电压的正输入端，负输入端和输出端，耦合在跨导级与地的输出之间的可调补偿块，具有耦合到补偿调节器的输出，耦合到跨导级的负输入的第二节点和耦合到地的第三节点，以及具有耦合到跨导级的输出的输入的驱动级，耦合到输出的电流输出并且耦合到可调补偿块的感测输出。

4. 发明申请

US20100123508A1 SMOOTH SWITCHING BETWEEN ANALOG INPUT SIGNALS 审中-公开
标题翻译：模拟输入信号之间的平滑切换
公开(公告)号：US20100123508A1
公开(公告)日：2010-05-20
申请号：US12578572
申请日：2009-10-13
申请人： Gang Zha , Guenter Neidhardt , Peter Kirchlechner
发明人： Gang Zha , Guenter Neidhardt , Peter Kirchlechner
IPC分类号： H03K17/00
CPC分类号： H03K17/005 , H03K17/16
摘要： A first switching circuit has an input for receiving a first input signal, and a second switching circuit has an input for receiving a second input signal. A node is connected to receive outputs from both the first and second switching circuits. A filter receives an unfiltered signal from the node to generate an output signal. A circuit is provided to alternately actuate the first and second switching circuits during a transition time period so as to smoothly transition the output of the filter between the first and second input signals. At least one of the first and second input signals is a time-varying analog signal. The smooth transition between the first and second input signals has a shape determined by pulse width and frequency characteristics of pulses output by the circuit to alternately actuate the first and second switching circuits. The shape may include a linear ramp, an S-shaped curve, a parabolic curve and a hyperbolic curve.
摘要翻译：第一开关电路具有用于接收第一输入信号的输入端，第二开关电路具有用于接收第二输入信号的输入端。连接节点以接收来自第一和第二开关电路的输出。滤波器从节点接收未滤波的信号以产生输出信号。提供电路以在转变时间周期期间交替地致动第一和第二开关电路，以便在第一和第二输入信号之间平滑地转换滤波器的输出。第一和第二输入信号中的至少一个是时变模拟信号。第一和第二输入信号之间的平滑过渡具有由电路输出的脉冲的脉冲宽度和频率特性确定的形状，以交替地致动第一和第二开关电路。该形状可以包括线性斜坡，S形曲线，抛物线曲线和双曲线。

5. 发明授权

US07573246B2 Low drop-out linear regulator including a stable compensation method and circuit for particular use in automotive applications 有权
标题翻译：低压降线性稳压器，包括稳定的补偿方法和电路，用于汽车应用
公开(公告)号：US07573246B2
公开(公告)日：2009-08-11
申请号：US11684434
申请日：2007-03-09
申请人： DaSong Lin , Gang Zha
发明人： DaSong Lin , Gang Zha
IPC分类号： G05F1/575 , G05F3/26
CPC分类号： G05F1/575
摘要： A compensated regulator includes a transconductance stage having a positive input for receiving a reference voltage, a negative input, and an output, an adjustable compensation block coupled between the output of the transconductance stage and ground, a feedback circuit having a first node coupled to the output of the compensated regulator, a second node coupled to the negative input of the transconductance stage, and a third node coupled to ground, and a driver stage having an input coupled to the output of the transconductance stage, a current output coupled to the output of the compensated regulator, and a sense output coupled to the adjustable compensation block.
摘要翻译：补偿稳压器包括跨导级，其具有用于接收参考电压的正输入端，负输入端和输出端，耦合在跨导级与地的输出之间的可调补偿块，具有耦合到补偿调节器的输出，耦合到跨导级的负输入的第二节点和耦合到地的第三节点，以及具有耦合到跨导级的输出的输入的驱动级，耦合到输出的电流输出并且耦合到可调补偿块的感测输出。

6. 发明授权

US08947060B2 Regulator over-voltage protection circuit with reduced standby current 有权
标题翻译：稳压器过电压保护电路具有降低的待机电流
公开(公告)号：US08947060B2
公开(公告)日：2015-02-03
申请号：US12953392
申请日：2010-11-23
申请人： Da Song Lin , Ni Zeng , Gang Zha , Xianfeng Xiong , Yiwei Zhang
发明人： Da Song Lin , Ni Zeng , Gang Zha , Xianfeng Xiong , Yiwei Zhang
IPC分类号： G05F1/00 , H02M1/32 , H02M3/00
CPC分类号： H02M1/32 , H02M3/00
摘要： An embodiment of the invention relates to a power converter formed with an error amplifier and a related method. In an embodiment, a first switch is coupled in series with an error amplifier compensation capacitor. Upon detection of a current level greater than a threshold level, the compensation capacitor is decoupled from the error amplifier by opening the first switch. In an embodiment, a second switch is coupled in parallel with the compensation capacitor, and the current-sensing circuit enables conductivity of the second switch to discharge the compensation capacitor upon detection of the current level greater than the threshold level. The second switch is opened upon detection of the current level less than the threshold level. In an embodiment, the current-sensing circuit controls an output current of the power converter at a current-limit level upon detection of the internal current level greater than the threshold level.
摘要翻译：本发明的实施例涉及一种形成有误差放大器的功率转换器及相关方法。在一个实施例中，第一开关与误差放大器补偿电容器串联耦合。在检测到大于阈值电平的电流电平时，通过打开第一开关将补偿电容器与误差放大器去耦。在一个实施例中，第二开关与补偿电容器并联耦合，并且当检测到大于阈值电平的电流电平时，电流检测电路使得第二开关的电导率能够使补偿电容器放电。在检测到小于阈值电平的当前电平时，打开第二个开关。在一个实施例中，电流检测电路在检测到大于阈值电平的内部电流电平时，将电力转换器的输出电流控制在限流电平。

7. 发明申请

US20110156688A1 Regulator Over-Voltage Protection Circuit with Reduced Standby Current 有权
标题翻译：具有降低待机电流的稳压器过压保护电路
公开(公告)号：US20110156688A1
公开(公告)日：2011-06-30
申请号：US12953392
申请日：2010-11-23
申请人： Da Song Lin , Ni Zeng , Gang Zha , Xianfeng Xiong , Yiwei Zhang
发明人： Da Song Lin , Ni Zeng , Gang Zha , Xianfeng Xiong , Yiwei Zhang
IPC分类号： G05F1/10
CPC分类号： H02M1/32 , H02M3/00
摘要： An embodiment of the invention relates to a power converter formed with an error amplifier and a related method. In an embodiment, a first switch is coupled in series with an error amplifier compensation capacitor. Upon detection of a current level greater than a threshold level, the compensation capacitor is decoupled from the error amplifier by opening the first switch. In an embodiment, a second switch is coupled in parallel with the compensation capacitor, and the current-sensing circuit enables conductivity of the second switch to discharge the compensation capacitor upon detection of the current level greater than the threshold level. The second switch is opened upon detection of the current level less than the threshold level. In an embodiment, the current-sensing circuit controls an output current of the power converter at a current-limit level upon detection of the internal current level greater than the threshold level.
摘要翻译：本发明的实施例涉及一种形成有误差放大器的功率转换器及相关方法。在一个实施例中，第一开关与误差放大器补偿电容器串联耦合。在检测到大于阈值电平的电流电平时，通过打开第一开关将补偿电容器与误差放大器去耦。在一个实施例中，第二开关与补偿电容器并联耦合，并且当检测到大于阈值电平的电流电平时，电流检测电路使得第二开关的电导率能够使补偿电容器放电。在检测到小于阈值电平的当前电平时，打开第二个开关。在一个实施例中，电流检测电路在检测到大于阈值电平的内部电流电平时，将电力转换器的输出电流控制在限流电平。

8. 发明授权

US06891437B2 Current amplifier structure 有权
标题翻译：电流放大器结构
公开(公告)号：US06891437B2
公开(公告)日：2005-05-10
申请号：US10071013
申请日：2002-02-08
申请人： Gang Zha , Solomon Ng
发明人： Gang Zha , Solomon Ng
IPC分类号： H03F1/34 , H03F3/45
CPC分类号： H03F3/45085 , H03F1/34 , H03F3/45475 , H03F2203/45511
摘要： A circuit structure for performing current amplification. The circuit structure may be standardized as a current amplifier cell such that many types of applications requiring current amplification may be created. The basic amplifier cell, which may accept voltage or current sources as an input signal, produces two identical output signals which may be used for feedback or serve as input to additional amplifier stages. This simple structure may be extended to perform current amplification with variable gain or AC or DC voltage-to-current conversion through the use of appropriately selected resistive elements.
摘要翻译：一种用于执行电流放大的电路结构。电路结构可以被标准化为电流放大器单元，使得可以创建需要电流放大的许多类型的应用。可以接受电压或电流源作为输入信号的基本放大器单元产生两个相同的输出信号，这些信号可用于反馈或用作附加放大器级的输入。可以通过使用适当选择的电阻元件来扩展这种简单的结构以执行具有可变增益或AC或DC电压到电流转换的电流放大。

9. 发明授权

US06456058B1 Temperature stable integrated circuit full wave level detector incorporating a single operational amplifier stage design 有权
标题翻译：具有单个运算放大器级设计的温度稳定型集成电路全波电平检测器
公开(公告)号：US06456058B1
公开(公告)日：2002-09-24
申请号：US09643157
申请日：2000-08-21
申请人： Gang Zha
发明人： Gang Zha
IPC分类号： G01R1163
CPC分类号： G01R19/04 , H03K5/08
摘要： A temperature stable, integrated circuit full wave level detector incorporating a single stage operational amplifier design which does not require, as in prior art implementations, two operational amplifiers to perform a full wave rectification function on an input alternating current (“AC”) signal followed by a comparator to detect the resultant signal level. The full wave level detector of the present invention utilizes but a single amplifier and some additional peripheral components resulting in a saving in on-chip die area in an integrated circuit (“IC”) implementation while also exhibiting excellent temperature stability characteristics.
摘要翻译：一种温度稳定的集成电路全波电平检测器，其结合单级运算放大器设计，如现有技术实现中那样，不需要两个运算放大器来对输入交流电（“AC”）信号执行全波整流功能由比较器检测结果信号电平。本发明的全波电平检测器利用单个放大器和一些附加的外围部件，从而在集成电路（“IC”）实现中节省了片上管芯面积，同时还具有出色的温度稳定特性。

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