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公开(公告)号：US10534384B2
公开(公告)日：2020-01-14
申请号：US15585399
申请日：2017-05-03
Applicant: Linear Technology Corporation
Inventor： Gregory Manlove , James McKenzie , Robert Chiacchia , Yi Ding Gu , Jian Li
Abstract: A current mode switching regulator circuit and operating method includes a variable duty cycle power switch controller, a voltage feedback loop that provides a feedback signal based on the output voltage, a current feedback loop that provides a current sense signal based on the output current, and an offset circuit having an external signal input and coupled to the current feedback loop. The power switch controller controls the switching regulator circuit to generate an output voltage and an output current. The offset circuit is configured to provide an offset output control signal, independently of the voltage feedback loop, to control the power switch controller so as to vary a duty cycle of the power switch controller based on the current sense signal and an external offset signal applied to the external signal input.
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公开(公告)号：US20160087531A1
公开(公告)日：2016-03-24
申请号：US14677794
申请日：2015-04-02
Applicant: Linear Technology Corporation
Inventor： Xu Zhang , Jian Li , Zhouyuan Shi , Yi Ding Gu
IPC: H02M3/158
CPC classification number: H02M3/1582 , H02M2001/0009
Abstract: An inductor current-sensing circuit for measuring a current in an inductor includes (a) a first RC network coupled between a first terminal of the inductor and a reference voltage source; and (b) a second RC network coupled between a second terminal of the inductor and the reference voltage source. The first RC network and the second RC network each have a time constant substantially equal to the ratio between the inductance and the DC resistance of the inductor. The inductor which current is being measured may be a primary inductor of a four-switch buck boost converter receiving an input voltage and providing an output voltage.
Abstract translation: 用于测量电感器中的电流的电感器电流感测电路包括（a）耦合在电感器的第一端子和参考电压源之间的第一RC网络; 和（b）耦合在电感器的第二端子和参考电压源之间的第二RC网络。 第一RC网络和第二RC网络各自具有基本上等于电感器和电感器的直流电阻之间的比率的时间常数。 正在测量电流的电感器可以是接收输入电压并提供输出电压的四开关降压升压转换器的初级电感器。
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公开(公告)号：US10084381B2
公开(公告)日：2018-09-25
申请号：US15654568
申请日：2017-07-19
Applicant: Linear Technology Corporation
Inventor： Xu Zhang , Jian Li , Zhouyuan Shi , Yi Ding Gu
CPC classification number: H02M3/1582 , H02M2001/0009
Abstract: An inductor current-sensing circuit for measuring a current in an inductor includes (a) a first RC network coupled between a first terminal of the inductor and a reference voltage source; and (b) a second RC network coupled between a second terminal of the inductor and the reference voltage source. The first RC network and the second RC network each have a time constant substantially equal to the ratio between the inductance and the DC resistance of the inductor. The inductor which current is being measured may be a primary inductor of a four-switch buck boost converter receiving an input voltage and providing an output voltage.
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公开(公告)号：US10013003B2
公开(公告)日：2018-07-03
申请号：US13764045
申请日：2013-02-11
Applicant: Linear Technology Corporation
Inventor： Gregory Manlove , Yi Ding Gu , Jian Li
CPC classification number: G05F1/10 , G05F1/562 , H02M1/32 , H02M3/142 , H02M3/156 , H02M3/158 , H02M2001/0019 , H02M2001/0025
Abstract: A switching regulator circuit incorporates an offset circuit, connected in a control loop of the regulator circuit, that, in response to a signal indicating an imminent load current step, adjusts a duty cycle of a power switch for the current step prior to the regulator circuit responding to a change in output voltage due to the current step. In one embodiment, a load controller issues a digital signal shortly before a load current step. The digital signal is decoded and converted to an analog offset signal in a feedback control loop of the regulator to immediately adjust a duty cycle of the switch irrespective of the output voltage level. By proper timing of the offset, output voltage ripple is greatly reduced. The current offset may also be used to rapidly change the output voltage in response to an external signal requesting a voltage step.
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Patent Agency Ranking
公开(公告)号：US20170324331A1
公开(公告)日：2017-11-09
申请号：US15654568
申请日：2017-07-19
Applicant: Linear Technology Corporation
Inventor： Xu Zhang , Jian Li , Zhouyuan Shi , Yi Ding Gu
CPC classification number: H02M3/1582 , H02M2001/0009
Abstract: An inductor current-sensing circuit for measuring a current in an inductor includes (a) a first RC network coupled between a first terminal of the inductor and a reference voltage source; and (b) a second RC network coupled between a second terminal of the inductor and the reference voltage source. The first RC network and the second RC network each have a time constant substantially equal to the ratio between the inductance and the DC resistance of the inductor. The inductor which current is being measured may be a primary inductor of a four-switch buck boost converter receiving an input voltage and providing an output voltage.
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公开(公告)号：US20170302174A1
公开(公告)日：2017-10-19
申请号：US15479162
申请日：2017-04-04
Applicant: Linear Technology Corporation
Inventor： Yingyi Yan , Yi Ding Gu
CPC classification number: H02M3/157 , H02M1/084 , H02M1/12 , H02M1/14 , H02M3/1584 , H02M2001/0009
Abstract: In a multiphase, current mode controlled switching power supply, current through the inductors in the various phases is sensed to determine when to turn off the switching transistors. An AC current feedback path, sensing the ramping ripple current, is separate from the DC current path, sensing the lower frequency average current. A shared differential amplifier has its inputs multiplexed to receive only the DC component signals from all the phases. The gain of the amplifier is set so that the DC sense signal has the proper proportion to the AC sense signal. The output of the amplifier is sampled and held for each phase using a second multiplexer. The AC sense signal and the amplified DC sense signal, for each phase, are combined by a summing circuit. The composite sense signal is applied to a comparator for each phase to control the duty cycle of the associated switch.
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公开(公告)号：US09793800B1
公开(公告)日：2017-10-17
申请号：US15479162
申请日：2017-04-04
Applicant: Linear Technology Corporation
Inventor： Yingyi Yan , Yi Ding Gu
CPC classification number: H02M3/157 , H02M1/084 , H02M1/12 , H02M1/14 , H02M3/1584 , H02M2001/0009
Abstract: In a multiphase, current mode controlled switching power supply, current through the inductors in the various phases is sensed to determine when to turn off the switching transistors. An AC current feedback path, sensing the ramping ripple current, is separate from the DC current path, sensing the lower frequency average current. A shared differential amplifier has its inputs multiplexed to receive only the DC component signals from all the phases. The gain of the amplifier is set so that the DC sense signal has the proper proportion to the AC sense signal. The output of the amplifier is sampled and held for each phase using a second multiplexer. The AC sense signal and the amplified DC sense signal, for each phase, are combined by a summing circuit. The composite sense signal is applied to a comparator for each phase to control the duty cycle of the associated switch.
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公开(公告)号：US09748843B2
公开(公告)日：2017-08-29
申请号：US14677794
申请日：2015-04-02
Applicant: Linear Technology Corporation
Inventor： Xu Zhang , Jian Li , Zhouyuan Shi , Yi Ding Gu
CPC classification number: H02M3/1582 , H02M2001/0009
Abstract: An inductor current-sensing circuit for measuring a current in an inductor includes (a) a first RC network coupled between a first terminal of the inductor and a reference voltage source; and (b) a second RC network coupled between a second terminal of the inductor and the reference voltage source. The first RC network and the second RC network each have a time constant substantially equal to the ratio between the inductance and the DC resistance of the inductor. The inductor which current is being measured may be a primary inductor of a four-switch buck boost converter receiving an input voltage and providing an output voltage.
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9.发明申请FEED FORWARD CURRENT MODE SWITCHING REGULATOR WITH IMPROVED TRANSIENT RESPONSE 有权进给正向电流模式开关稳压器具有改进的瞬态响应公开(公告)号：US20140139198A1
公开(公告)日：2014-05-22
申请号：US13764045
申请日：2013-02-11
Applicant: LINEAR TECHNOLOGY CORPORATION
Inventor： Gregory Manlove , Yi Ding Gu , Jian Li
IPC: G05F1/10
CPC classification number: G05F1/10 , G05F1/562 , H02M1/32 , H02M3/142 , H02M3/156 , H02M3/158 , H02M2001/0019 , H02M2001/0025
Abstract: A switching regulator circuit incorporates an offset circuit, connected in a control loop of the regulator circuit, that, in response to a signal indicating an imminent load current step, adjusts a duty cycle of a power switch for the current step prior to the regulator circuit responding to a change in output voltage due to the current step. In one embodiment, a load controller issues a digital signal shortly before a load current step. The digital signal is decoded and converted to an analog offset signal in a feedback control loop of the regulator to immediately adjust a duty cycle of the switch irrespective of the output voltage level. By proper timing of the offset, output voltage ripple is greatly reduced. The current offset may also be used to rapidly change the output voltage in response to an external signal requesting a voltage step.
Abstract translation: 开关稳压器电路包括连接在调节器电路的控制回路中的偏移电路，响应于指示迫在眉睫的负载电流步长的信号，调节调节器电路之前的当前步骤的功率开关的占空比 响应于由于当前步骤而导致的输出电压的变化。 在一个实施例中，负载控制器在负载电流步长之前不久就发出数字信号。 数字信号被解码并转换成调节器的反馈控制环路中的模拟偏移信号，以立即调节开关的占空比，而与输出电压电平无关。 通过适当的偏移定时，输出电压纹波大大降低。 电流偏移也可以用于响应于请求电压阶跃的外部信号快速地改变输出电压。
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