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公开(公告)号：US09654002B2
公开(公告)日：2017-05-16
申请号：US14918893
申请日：2015-10-21
CPC分类号： H02M3/158 , H02M1/38 , H02M3/157 , H02M2001/0012 , H02M2001/0048 , Y02B70/1491
摘要： An apparatus and method are disclosed for efficiently using power at a voltage regulator, such as a synchronous buck converter. The synchronous buck converter includes a first switch and a second switch operated by a first control signal and a second control signal, respectively, where the first and second control signals have a corresponding phase difference. A logic circuit measures a duty cycle of an input pulse width modulated (PWM) signal against iterative changes of the phase difference between the first control signal and the second control signal. The logic circuit selects a phase difference corresponding to a minimum value of the PWM signal, thereby optimizing dead time at the synchronous buck converter. The logic circuit may include a Digital Pulse Width Modulator.
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公开(公告)号：US09575095B2
公开(公告)日：2017-02-21
申请号：US14459208
申请日：2014-08-13
IPC分类号： G01R23/02 , G01R19/00 , G01R31/28 , G01R19/165
CPC分类号： G01R19/0084 , G01R19/16552 , G01R23/02 , G01R31/282
摘要： Systems and methods for sensing voltage on a chip are described herein. In one embodiment, a voltage sensor comprises a voltage-controlled oscillator coupled to a voltage being sensed, and a plurality of transition detectors, wherein each of the transition detectors is coupled to a different location on the oscillator, and wherein each of the transition detectors is configured to count a number of transitions at the respective location over a time period. The voltage sensor also comprises an adder configured to add the numbers of transitions from the transition detectors to generate an output value that is approximately proportional to the voltage.
摘要翻译： 本文描述了用于感测芯片上的电压的系统和方法。 在一个实施例中，电压传感器包括耦合到被感测的电压的压控振荡器和多个转换检测器，其中每个转换检测器耦合到振荡器上的不同位置，并且其中每个转换检测器 被配置为在一段时间段内对相应位置的多个转换进行计数。 电压传感器还包括加法器，其被配置为将来自转换检测器的转移数目相加以产生大致与电压成比例的输出值。
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公开(公告)号：US20160069939A1
公开(公告)日：2016-03-10
申请号：US14480321
申请日：2014-09-08
发明人： Chuang Zhang , Nan Chen , Junmou Zhang
IPC分类号： G01R19/252 , G01R23/10
CPC分类号： G01R19/252 , G01R23/10 , H03M1/0607 , H03M1/1295 , H03M1/60
摘要： In one embodiment, a method for measuring current comprises generating a sensor current based on a current being measured. The method also comprises converting a combined current into a first frequency, wherein the combined current is a sum of the sensor current and a common-mode current, and converting the first frequency into a first count value. The method further comprises converting the common-mode current into a second frequency, converting the second frequency into a second count value, and subtracting the second count value from the first count value to obtain a current reading.
摘要翻译： 在一个实施例中，用于测量电流的方法包括基于正被测量的电流产生传感器电流。 该方法还包括将组合电流转换成第一频率，其中组合电流是传感器电流和共模电流之和，并将第一频率转换为第一计数值。 该方法还包括将共模电流转换成第二频率，将第二频率转换成第二计数值，并从第一计数值减去第二计数值以获得电流读数。
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公开(公告)号：US20160047847A1
公开(公告)日：2016-02-18
申请号：US14459208
申请日：2014-08-13
CPC分类号： G01R19/0084 , G01R19/16552 , G01R23/02 , G01R31/282
摘要： Systems and methods for sensing voltage on a chip are described herein. In one embodiment, a voltage sensor comprises a voltage-controlled oscillator coupled to a voltage being sensed, and a plurality of transition detectors, wherein each of the transition detectors is coupled to a different location on the oscillator, and wherein each of the transition detectors is configured to count a number of transitions at the respective location over a time period. The voltage sensor also comprises an adder configured to add the numbers of transitions from the transition detectors to generate an output value that is approximately proportional to the voltage.
摘要翻译： 本文描述了用于感测芯片上的电压的系统和方法。 在一个实施例中，电压传感器包括耦合到被感测的电压的压控振荡器和多个转换检测器，其中每个转换检测器耦合到振荡器上的不同位置，并且其中每个转换检测器 被配置为在一段时间段内对相应位置的多个转换进行计数。 电压传感器还包括加法器，其被配置为将来自转换检测器的转移数目相加以产生大致与电压成比例的输出值。
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5.发明申请Circuits and Methods Providing Three-Level Signals At A Synchronous Buck Converter 有权在同步降压转换器中提供三电平信号的电路和方法公开(公告)号：US20160380543A1
公开(公告)日：2016-12-29
申请号：US15248267
申请日：2016-08-26
CPC分类号： H02M3/158 , H02M1/14 , H02M7/483 , H02M2003/072
摘要： A circuit including: a three-level buck converter having: a plurality of input switches and an inductor configured to receive a voltage from the plurality of input switches, the plurality of input switches coupled with a first capacitor and configured to charge and discharge the first capacitor; a second capacitor at an output of the buck converter; and a switched capacitor at an input node of the inductor, wherein the switched capacitor is smaller than either the first capacitor or the second capacitor.
摘要翻译： 一种电路，包括：三电平降压转换器，具有：多个输入开关和电感器，被配置为从所述多个输入开关接收电压，所述多个输入开关与第一电容器耦合并且被配置为对所述第一电容器进行充电和放电 电容器 在降压转换器的输出处的第二电容器; 以及在所述电感器的输入节点处的开关电容器，其中所述开关电容器小于所述第一电容器或所述第二电容器。
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6.发明申请CIRCUITS AND METHODS PROVIDING THREE-LEVEL SIGNALS AT A SYNCHRONOUS BUCK CONVERTER 有权在同步转换器上提供三级信号的电路和方法公开(公告)号：US20160118886A1
公开(公告)日：2016-04-28
申请号：US14630318
申请日：2015-02-24
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M1/14 , H02M7/483 , H02M2003/072
摘要： A circuit including: a three-level buck converter having: a plurality of input switches and an inductor configured to receive a voltage from the plurality of input switches, the plurality of input switches coupled with a first capacitor and configured to charge and discharge the first capacitor; a second capacitor at an output of the buck converter; and a switched capacitor at an input node of the inductor, wherein the switched capacitor is smaller than either the first capacitor or the second capacitor.
摘要翻译： 一种电路，包括：三电平降压转换器，具有：多个输入开关和电感器，被配置为从所述多个输入开关接收电压，所述多个输入开关与第一电容器耦合并且被配置为对所述第一电容器进行充电和放电 电容器 在降压转换器的输出处的第二电容器; 以及在所述电感器的输入节点处的开关电容器，其中所述开关电容器小于所述第一电容器或所述第二电容器。
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公开(公告)号：US09903892B2
公开(公告)日：2018-02-27
申请号：US14480321
申请日：2014-09-08
发明人： Chuang Zhang , Nan Chen , Junmou Zhang
IPC分类号： G01R19/252 , G01R23/10 , H03M1/06 , H03M1/12 , H03M1/60
CPC分类号： G01R19/252 , G01R23/10 , H03M1/0607 , H03M1/1295 , H03M1/60
摘要： In one embodiment, a method for measuring current comprises generating a sensor current based on a current being measured. The method also comprises converting a combined current into a first frequency, wherein the combined current is a sum of the sensor current and a common-mode current, and converting the first frequency into a first count value. The method further comprises converting the common-mode current into a second frequency, converting the second frequency into a second count value, and subtracting the second count value from the first count value to obtain a current reading.
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公开(公告)号：US09671438B2
公开(公告)日：2017-06-06
申请号：US14533950
申请日：2014-11-05
发明人： Chuang Zhang , Zhengming Fu , Nan Chen
CPC分类号： G01R19/25 , G01R19/0092 , G01R19/32
摘要： In one embodiment, a method for measuring current is described herein. The method comprises shorting first and second inputs of an amplifying circuit to generate a first output signal, and converting the first output signal into an offset cancelation value. The method also comprises passing a current through a power switch, wherein the current generates a voltage drop across the power switch, applying the voltage drop across the first and second inputs of the amplifying circuit to generate a second output signal, and converting the second output signal into a current value. The method further comprises subtracting the offset cancelation value from the current value to generate an offset-compensated current value.
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公开(公告)号：US20160124030A1
公开(公告)日：2016-05-05
申请号：US14533950
申请日：2014-11-05
发明人： Chuang Zhang , Zhengming Fu , Nan Chen
CPC分类号： G01R19/25 , G01R19/0092 , G01R19/32
摘要： In one embodiment, a method for measuring current is described herein. The method comprises shorting first and second inputs of an amplifying circuit to generate a first output signal, and converting the first output signal into an offset cancelation value. The method also comprises passing a current through a power switch, wherein the current generates a voltage drop across the power switch, applying the voltage drop across the first and second inputs of the amplifying circuit to generate a second output signal, and converting the second output signal into a current value. The method further comprises subtracting the offset cancelation value from the current value to generate an offset-compensated current value.
摘要翻译： 在一个实施例中，这里描述了一种用于测量电流的方法。 该方法包括缩短放大电路的第一和第二输入以产生第一输出信号，并将第一输出信号转换成偏移消除值。 该方法还包括使电流通过电源开关，其中电流在功率开关两端产生电压降，在放大电路的第一和第二输入端施加电压降，以产生第二输出信号，并转换第二输出 信号变成当前值。 该方法还包括从当前值减去偏移消除值以产生偏移补偿电流值。
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10.发明申请CIRCUITS AND METHODS PROVIDING DEAD TIME ADJUSTMENT AT A SYNCHRONOUS BUCK CONVERTER 有权在同步转换器上提供死区时间调整的电路和方法公开(公告)号：US20160118893A1
公开(公告)日：2016-04-28
申请号：US14918893
申请日：2015-10-21
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M1/38 , H02M3/157 , H02M2001/0012 , H02M2001/0048 , Y02B70/1491
摘要： An apparatus and method are disclosed for efficiently using power at a voltage regulator, such as a synchronous buck converter. The synchronous buck converter includes a first switch and a second switch operated by a first control signal and a second control signal, respectively, where the first and second control signals have a corresponding phase difference. A logic circuit measures a duty cycle of an input pulse width modulated (PWM) signal against iterative changes of the phase difference between the first control signal and the second control signal. The logic circuit selects a phase difference corresponding to a minimum value of the PWM signal, thereby optimizing dead time at the synchronous buck converter. The logic circuit may include a Digital Pulse Width Modulator.
摘要翻译： 公开了一种用于在诸如同步降压转换器的电压调节器处有效地使用电力的装置和方法。 同步降压转换器包括分别由第一控制信号和第二控制信号操作的第一开关和第二开关，其中第一和第二控制信号具有相应的相位差。 逻辑电路针对第一控制信号和第二控制信号之间的相位差的迭代变化来测量输入脉宽调制（PWM）信号的占空比。 逻辑电路选择与PWM信号的最小值相对应的相位差，从而优化同步降压转换器的死区时间。 逻辑电路可以包括数字脉宽调制器。
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