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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：US20230110617A1
公开(公告)日：2023-04-13
申请号：US17498866
申请日：2021-10-12
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Meng
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：US10992231B1
公开(公告)日：2021-04-27
申请号：US16716681
申请日：2019-12-17
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Meng
摘要： A controller includes a first timer for setting a turn-on time of a first high-side switch of a buck-boost converter, wherein the turn-on time of the first high-side switch is determined by an input voltage of the buck-boost converter, an output voltage of the buck-boost converter and a first predetermined bias voltage, a second timer for setting a turn-on time of a second low-side switch of the buck-boost converter, wherein the turn-on time of the second low-side switch is determined by the input voltage of the buck-boost converter, the output voltage of the buck-boost converter and a second predetermined bias voltage, and a valley current mode control device for setting a turn-on time of a first low-side switch and a turn-on time of a second high-side switch of the buck-boost converter.
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公开(公告)号：US10250142B1
公开(公告)日：2019-04-02
申请号：US16000757
申请日：2018-06-05
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Da Meng
摘要： The present disclosure provides a system and method for managing a four-switch BUCKBOOST converter with a combination of a Constant Off-time (COT) control and a Peak Current Mode (PCM) control. With the COT control, the four-switch BUCKBOOST converter can automatically and smoothly transition between a BUCK mode, a BUCKBOOST mode, and a BOOST mode when input voltage varies. In some implementations, the four-switch BUCKBOOST converter only requires a simple, low-power-consumption and robust system control loop compensation with the PCM control for inductor current, and, thus, eliminates the need for oscillator and slope compensation circuit. The PCM control is used to determine turn-off-timing of switches of the four-switch BUCKBOOST converter. The system control loop compensation can provide cycle-by-cycle current limit function to protect the converter and load from over-current damages.
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公开(公告)号：US11682973B2
公开(公告)日：2023-06-20
申请号：US17378111
申请日：2021-07-16
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Meng
CPC分类号： H02M3/1582 , H02M1/088 , H02M3/157
摘要： An apparatus includes a first timer configured to determine a turn-off time of a first high-side switch of a buck-boost converter, and a second timer configured to determine a turn-off time of a second low-side switch of the buck-boost converter based on a comparison between a first signal and a second signal, the first signal being proportional to an input voltage of the buck-boost converter, and the second signal being generated based on a signal proportional to an output voltage of the buck-boost converter.
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公开(公告)号：US10770961B2
公开(公告)日：2020-09-08
申请号：US15953768
申请日：2018-04-16
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Meng
摘要： A power converter comprises a first switch and a second switch connected in series between an input power source and ground, an inductor connected between a common node of the first switch and the second switch, and an output capacitor, a control apparatus comprising a feedback control apparatus and an ramp generator, wherein the ramp generator is configured to dynamically adjust an amplitude of a ramp based upon different operating conditions, an on-time control generator and a latch having a set input configured to receive an output signal of the control apparatus and a reset input configured to receive an output signal of the on-time control generator.
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公开(公告)号：US20200161977A1
公开(公告)日：2020-05-21
申请号：US16747781
申请日：2020-01-21
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Meng
摘要： A buck-boost converter comprises generating a first ramp using a first current source having a current level proportional to an input voltage of a buck-boost converter, and a second ramp using a second current source having a current level proportional to an output voltage of the buck-boost converter, generating a first threshold voltage proportional to a difference between the input voltage and the output voltage of the buck-boost converter, and a second threshold voltage proportional to the input voltage of the buck-boost converter, terminating a gate drive signal of a first low-side switch of the buck-boost converter based upon comparing the first threshold voltage and the first ramp, and terminating a gate drive signal of a second high-side switch of the buck-boost converter based upon comparing the second threshold voltage and the second ramp.
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8.发明申请SYSTEM AND METHOD FOR SUPPORTING A SEARCHING PROCESS IN A SUPPLY CHAIN MANAGEMENT ENVIRONMENT 审中-公开在供应链管理环境中支持搜索过程的系统和方法公开(公告)号：US20140114964A1
公开(公告)日：2014-04-24
申请号：US14028209
申请日：2013-09-16
申请人： M3 Technology, Inc.
发明人： Dong Dong , Steven Green
IPC分类号： G06F17/30
CPC分类号： G06Q10/087 , G06F16/3322 , G06Q10/08
摘要： A system and method support a search process in a supply chain management environment, in order to make finding supply chain information simple. The search process can make instantaneous search suggestion based on different supply chain information categories in the environment. Furthermore, special search keywords can be used as shortcut for finding supply chain information. Also, the system can organize and display the search results in a clear and intuitive fashion, such as displaying the search results in multiple sections with mixing of graphs and texts. Additionally, the search process can be used together with other supply chain management processes.
摘要翻译： 系统和方法支持供应链管理环境中的搜索过程，以便使供应链信息的查找变得简单。 搜索过程可以根据环境中不同的供应链信息类别进行即时搜索建议。 此外，特殊搜索关键字可以用作查找供应链信息的快捷方式。 此外，系统可以以清晰和直观的方式组织和显示搜索结果，例如通过混合图形和文本将搜索结果显示在多个部分中。 此外，搜索过程可以与其他供应链管理流程一起使用。
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公开(公告)号：US20230268837A1
公开(公告)日：2023-08-24
申请号：US18141156
申请日：2023-04-28
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Meng
CPC分类号： H02M3/1582 , H02M1/08 , H02M1/0009
摘要： An apparatus includes a buck converter portion of a buck-boost converter configured to operate under a constant on-time control scheme, wherein an on-time of a high-side switch of the buck converter portion is determined by a buck on-time timer, and a boost converter portion of the buck-boost converter configured to operate under a constant off-time control scheme, wherein an off-time of a low-side switch of the boost converter portion is determined by a boost off-time timer.
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公开(公告)号：US11705811B2
公开(公告)日：2023-07-18
申请号：US17094184
申请日：2020-11-10
申请人： M3 Technology Inc.
发明人： Bo Yang , Xiaoyu Xi , David Meng
CPC分类号： H02M3/1582 , H02M1/08 , H02M1/0009
摘要： An apparatus includes a buck converter portion of a buck-boost converter configured to operate under a constant on-time control scheme, wherein an on-time of a high-side switch of the buck converter portion is determined by a buck on-time timer, and a boost converter portion of the buck-boost converter configured to operate under a constant off-time control scheme, wherein an off-time of a low-side switch of the boost converter portion is determined by a boost off-time timer.
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