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1.发明申请公开(公告)号：US20210143735A1
公开(公告)日：2021-05-13
申请号：US16682830
申请日：2019-11-13
发明人： Zhiqing You , Tim Ng , Sue Perranoski , Benjamim Tang
IPC分类号： H02M3/157
摘要： A controller for a power converter includes: an estimator configured to estimate or calculate a slew rate of an output voltage of the power converter or a slew rate of an error voltage which corresponds to a difference between the output voltage and a target voltage, during a load transient; and a modulator configured to modify regulation of the output voltage based on the estimated or calculated slew rate. A corresponding voltage regulation method and an electronic system that includes the power converter are also described.
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公开(公告)号：US20190214903A1
公开(公告)日：2019-07-11
申请号：US16357892
申请日：2019-03-19
发明人： Zhiqing You , Tim Ng , Benjamim Tang
CPC分类号： H02M3/156 , G01R19/2513 , G01R23/02 , G06F17/5009 , H02M1/084 , H02M3/1584
摘要： A method is provided for configuring a controller for a voltage regulator system having an output filter response set by an inductance (L) and a capacitance (C). The method includes applying one or more pulses of known on-time and off-time to the voltage regulator system, and taking measurements of the voltage regulator system in response to the one or more pulses of known on-time and off-time. The method further includes constructing a model of the output filter response of the voltage regulator system based on the measurements, and setting one or more control loop parameters of the controller based on the model of the output filter response.
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公开(公告)号：US11689103B2
公开(公告)日：2023-06-27
申请号：US17212371
申请日：2021-03-25
发明人： Zhiqing You , Tim Ng
IPC分类号： H02M3/158 , H02M3/156 , G01R19/165 , H03K5/24 , H02M1/00
CPC分类号： H02M3/158 , G01R19/16538 , H02M3/1566 , H03K5/24 , H02M1/0009 , H02M1/0025
摘要： An apparatus such as a power supply circuit includes an input, a signal generator, and a frequency selector. The input receives a signal indicating a magnitude of current supplied by an output voltage of a voltage converter to power a load. The signal generator produces a frequency selection signal based on the magnitude of the current supplied to the load as indicated by the received signal. Via the frequency selection signal, the frequency selector selects a switching frequency of controlling switches in the voltage converter to produce the output voltage. According to one configuration, the signal generator and frequency selector delay increasing the switching frequency from a first switching frequency setting to a second switching frequency setting subsequent to detecting a change in the magnitude of the current.
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公开(公告)号：US11362586B1
公开(公告)日：2022-06-14
申请号：US17215951
申请日：2021-03-29
发明人： Zhiqing You , Venkat Sreenivas
摘要： An apparatus includes a filter to receive a signal indicating a magnitude of current supplied by an output voltage to power a dynamic load. The filter produces a filtered signal from the received signal. A reference voltage generator generates a target setpoint voltage based on the filtered signal. The target setpoint voltage is used to control (such as regulate) a magnitude of the output voltage. The apparatus further includes a filter controller to dynamically change operational settings of the filter. For example, the filter controller reduces the bandwidth of filtering the signal in response to detecting that: i) the magnitude of the output voltage falls below an output voltage threshold value, and ii) the magnitude of a received VID value is greater than a VID threshold value.
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公开(公告)号：US10324480B2
公开(公告)日：2019-06-18
申请号：US15729170
申请日：2017-10-10
发明人： Zhiqing You , Tim Ng , Amir Babazadeh , Jinghong Guo , Benjamim Tang
摘要： A multiphase voltage regulator includes a plurality of phases and a controller. Each phase is configured to output a phase current to a load through an inductor in response to a control signal input to the phase. The controller is operable to: generate the control signals input to the phases; set a switching frequency of the control signals to a first value; and change the switching frequency from the first value to a second value different than the first value if the load current changes repetitively at a frequency that is within a predetermined range of the first value of the switching frequency. A corresponding method of operating the multiphase voltage regulator is also provided.
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6.发明申请公开(公告)号：US20180234012A1
公开(公告)日：2018-08-16
申请号：US15429771
申请日：2017-02-10
发明人： Zhiqing You , Tim Ng , Benjamim Tang
CPC分类号： H02M3/156 , G01R19/2513 , G01R23/02 , G06F17/5009 , H02M1/084 , H02M3/1584
摘要： A method is provided for configuring a controller for a voltage regulator system having an output filter response set by an inductance (L) and a capacitance (C). The method includes applying one or more pulses of known on-time and off-time to the voltage regulator system, and taking measurements of the voltage regulator system in response to the one or more pulses of known on-time and off-time. The method further includes constructing a model of the output filter response of the voltage regulator system based on the measurements, and setting one or more control loop parameters of the controller based on the model of the output filter response.
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7.发明授权公开(公告)号：US12051974B2
公开(公告)日：2024-07-30
申请号：US16682830
申请日：2019-11-13
发明人： Zhiqing You , Tim Ng , Sue Perranoski , Benjamim Tang
IPC分类号： H02M3/157
CPC分类号： H02M3/157
摘要： A controller for a power converter includes: an estimator configured to estimate or calculate a slew rate of an output voltage of the power converter or a slew rate of an error voltage which corresponds to a difference between the output voltage and a target voltage, during a load transient; and a modulator configured to modify regulation of the output voltage based on the estimated or calculated slew rate. A corresponding voltage regulation method and an electronic system that includes the power converter are also described.
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公开(公告)号：US11428721B2
公开(公告)日：2022-08-30
申请号：US16891261
申请日：2020-06-03
发明人： Zhiqing You , Tim Ng
IPC分类号： G01R19/25 , G01R19/165 , G01R19/257 , H02M7/00
摘要： An apparatus includes a power converter and an estimator. The power converter produces an output voltage to power a load via current through an inductor. The estimator receives a current sense signal from a current monitor resource. The current sense signal represents/indicates a measured magnitude of the current supplied to the load through the inductor over time during one or more power delivery control cycles. Portions of the current sense signal may be an inaccurate representation of an amount of current through the inductor. Via the current sense signal, or portion thereof, the estimator determines (such as calculates) an inductance (value) of the inductor. The estimator then uses the calculated inductance value to estimate a magnitude of the output current supplied through the inductor to the load.
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公开(公告)号：US10608537B2
公开(公告)日：2020-03-31
申请号：US16504045
申请日：2019-07-05
发明人： Zhiqing You , Tim Ng
摘要： A voltage regulator includes a power stage electrically coupled to an input voltage terminal, a controller for controlling the power stage and a shunt resistor of a sense network connected in series between the input voltage terminal and the power stage. In a non-calibration mode, a first level shifting resistor of the sense network is electrically connected in series between a first terminal of the shunt resistor and a first sense pin of the controller and a second level shifting resistor of the sense network is electrically connected in series between a second terminal of the shunt resistor and a second sense pin of the controller. In a calibration mode, the first sense pin and the second sense pin of the controller are electrically connected to the same terminal of the shunt resistor via the first level shifting resistor and the second level shifting resistor of the sense network.
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公开(公告)号：US20190107853A1
公开(公告)日：2019-04-11
申请号：US15729170
申请日：2017-10-10
发明人： Zhiqing You , Tim Ng , Amir Babazadeh , Jinghong Guo , Benjamim Tang
摘要： A multiphase voltage regulator includes a plurality of phases and a controller. Each phase is configured to output a phase current to a load through an inductor in response to a control signal input to the phase. The controller is operable to: generate the control signals input to the phases; set a switching frequency of the control signals to a first value; and change the switching frequency from the first value to a second value different than the first value if the load current changes repetitively at a frequency that is within a predetermined range of the first value of the switching frequency. A corresponding method of operating the multiphase voltage regulator is also provided.
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