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公开(公告)号：US20240364221A1
公开(公告)日：2024-10-31
申请号：US18224818
申请日：2023-07-21
CPC分类号： H02M3/1584 , H02M1/0009 , H02M1/0025 , H02M3/157
摘要： At least one example describes mechanisms to improve performance of a multiphase voltage regulator. In at least one example, an integrated circuit is provided which includes control circuitry coupled to a first power stage and a second power stage. The first power stage and a second power stage are coupled to an output power supply rail, wherein the control circuitry generates a first pulse width modulated signal for the first power stage and a second pulse width modulated signal for the second power stage. In at least one example, the control circuitry aligns rise and fall times of the first pulse width modulated signal and the second pulse width modulated signal based on an undershoot condition being detected on the output power supply rail.
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公开(公告)号：US20240364218A1
公开(公告)日：2024-10-31
申请号：US18308370
申请日：2023-04-27
发明人： ByeongOk JUNG
CPC分类号： H02M3/158 , H02M1/0009 , H02M3/157
摘要： A power converter system comprising: a switched capacitor power converter; an always-on power converter; and a controller, wherein the power converter system is operable in a first mode of operation in which only the always-on power converter supplies output power and a second mode of operation in which the switched capacitor power converter supplies output power, and wherein the controller is configured to transition the power converter system from the first mode to the second mode based on a parameter of a current and/or a voltage of output power supplied by the power converter system.
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公开(公告)号：US12126262B2
公开(公告)日：2024-10-22
申请号：US18530177
申请日：2023-12-05
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Meng
CPC分类号： H02M3/1586 , H02M1/0003 , H02M1/08 , H02M3/157 , H02M3/1584
摘要： An apparatus includes a ramp generator configured to produce a set signal for determining a phase shift between a first phase and a second phase of a power converter, a first phase on-timer configured to produce a first reset signal for determining a turn-on time of a high-side switch of the first phase of the power converter, a second phase on-timer configured to produce a second reset signal for determining a turn-on time of a high-side switch of the second phase of the power converter, and a control logic block configured to generate gate drive signals for the first phase and the second phase of the power converter based on the set signal, the first reset signal and the second reset signal.
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公开(公告)号：US20240333159A1
公开(公告)日：2024-10-03
申请号：US18620381
申请日：2024-03-28
申请人： ROHM CO., LTD.
发明人： Kanto Kubota
CPC分类号： H02M3/1584 , H02M3/157
摘要： A power supply control device configured to control first and second DC/DC converters, each of which is a step-down or a step-up converter, of first and second channels respectively, wherein the step-down and step-up converters respectively include a first switch output stage including high-side and low-side transistors and a second switch output stage including a switching element and an inductor, wherein a switching voltage is generated at a node where the high-side and low-side transistors are connected or where the inductor and the switching element are connected, and the high-side transistor or the switching element is turned on during an on-time, and wherein the power supply control device includes: first and second PWM controllers performing PWM control on the first or second switch output stage in the first and second DC/DC converters respectively; and a delay controller delaying a switch voltage of a channel having a longer on-time.
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公开(公告)号：US12074517B2
公开(公告)日：2024-08-27
申请号：US17137086
申请日：2020-12-29
CPC分类号： H02M3/1563 , H02M1/0032 , H02M3/156 , H02M3/157 , H02M1/14 , H02M3/1582
摘要： A DC-DC regulator system includes a power circuit which has a first input coupled to receive an input voltage, a second input coupled to receive a control signal and an output to provide a regulated output voltage. The system includes a control circuit which has a first input coupled to receive the regulated output voltage, a second input coupled to receive a reference voltage, a first output to provide the control signal, and a second output to provide a converter clock signal. The system includes an out-of-audio circuit which has a first input coupled to receive a minimum threshold frequency signal, a second input coupled to receive the converter clock signal, a third input coupled to the power circuit output, and a fourth input coupled to receive a bandwidth control clock signal.
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6.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：US12040708B2
公开(公告)日：2024-07-16
申请号：US17485003
申请日：2021-09-24
申请人： Apple Inc.
发明人： Enrico Pardi
CPC分类号： H02M3/158 , H02M3/157 , H02M3/1588
摘要： A multi-level power converter with hysteretic control is disclosed. In one embodiment, a power converter includes a switching circuit and a control circuit. The switching circuit includes a plurality of switches, a capacitor, and a switch node coupled to a regulated supply voltage node via an inductor. The switching circuit is configured to couple the switch node to different circuit nodes according to different switch states. The control circuit is configured to activate a particular set of switches according a current switch state, perform a comparison of an output current of the switching circuit to various threshold values, and determine a next switch state using results of the comparison and duty cycle information. Based on these results, the control circuit is configured to cause a transition from the current switch state to the next switch state by activating a different set of switches according to the next switch state.
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8.发明公开公开(公告)号：US20240223069A1
公开(公告)日：2024-07-04
申请号：US18325022
申请日：2023-05-29
发明人： Fu-To Lin , Chang-Jung Fu
CPC分类号： H02M1/088 , H02M1/0009 , H02M1/32 , H02M3/157
摘要： A switching power converter for converting an input power to an output power includes a power stage; and a conversion control circuit which includes: a current limit control circuit for comparing a current monitor signal and a sensing signal limit threshold to generate a current limit control signal, wherein the current monitor signal is related to an output current of the output power; and a PWM control circuit for generating a PWM signal according to an output voltage of the output power for controlling the power stage to generate the output power. The first state of the PWM signal has a first constant time. When the current limit control signal indicates that the output current exceeds a current limit threshold, the PWM control circuit controls a switching frequency of the PWM signal to operate at a fixed frequency. The fixed frequency is lower than a predetermined frequency limit.
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公开(公告)号：US20240204663A1
公开(公告)日：2024-06-20
申请号：US18066765
申请日：2022-12-15
发明人： Antonino Torres
摘要： An integrated circuit device includes: a Buck converter; and a control circuit for the Buck converter, which includes: a comparator configured to compare a feedback voltage of the Buck converter with a reference voltage that increases from a first voltage to a second voltage; a pulse-width modulator configured to generate a pulse-width modulated (PWM) signal having a timing-varying pulse width proportional to the reference voltage; an AND gate configured to generate a first control signal by performing a logic AND operation on an output of the comparator and the PWM signal; a pulse generator configured to generate a second control signal by generating a pulse in response to a rising edge in the output of the comparator; and a selection circuit configured to, based on an output voltage of the Buck converter, select the first control signal or the second control signal as a control signal for the Buck converter.
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公开(公告)号：US20240178747A1
公开(公告)日：2024-05-30
申请号：US18457671
申请日：2023-08-29
申请人： Fujitsu Limited
发明人： Tatsuya Hirose
CPC分类号： H02M1/385 , H02M1/0025 , H02M1/088 , H02M3/157
摘要： A switching power supply includes a switching power supply circuit that has an upper arm and a lower arm that are coupled in series. The switching power supply further includes a drive circuit that alternately turns on the upper arm and the lower arm across a dead time in which the upper arm and the lower arm are turned off such that an output voltage of the switching power supply circuit follows a voltage of an input signal that is an envelope signal or a subcarrier signal; and an adjustment circuit that adjusts the dead time according to the voltage of the input signal.
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