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公开(公告)号：US10056849B2
公开(公告)日：2018-08-21
申请号：US14623025
申请日：2015-02-16
Applicant: Analog Devices Global
IPC: H02N2/18
CPC classification number: H02N2/181
Abstract: An impedance matching circuit is provided for use with a piezotransducer that includes a parasitic capacitor comprising: an inductor coupled in parallel with the parasitic capacitor; a peak and valley detection circuit configured to detect output voltage waveform peaks and valleys; a first switch circuit configured to bias flip the output voltage waveform at a selectable first time relative to a detected peak and at a selectable first time relative to a detected valley; a second switch circuit configured to couple the inductor to the energy storage circuit at a selectable second time following each output voltage bias flip; an energy monitoring circuit to provide an indication of energy flow from the inductor to the energy storage circuit following each output voltage bias flip; and a maximum power point tracking (MPPT) circuit configured to select the first time and the second time based at least in part upon the indicated energy flow.
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公开(公告)号：US10033304B2
公开(公告)日：2018-07-24
申请号：US14972800
申请日：2015-12-17
Applicant: Analog Devices Global
IPC: H02N2/18
Abstract: An electronic circuit can be coupled to an energy harvesting device. The output of the energy harvesting device can provide a damped oscillating waveform elicited from a transient stimulus applied to the energy harvesting device, such as in response to mechanical shock or mechanical impact excitation. A first switch can be coupled between the energy harvesting device and an inductor and configured to selectively connect the input node to the inductor. A second switch can be coupled between the inductor and an energy storage device, the second switch configured to selectively couple the inductor to the energy storage device. A control circuit can be coupled to the first and second switches, such as configured to operate the first and second switches according to one or more of an over bias flip technique, a half bias flip technique, or a bias flip technique.
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公开(公告)号：US09813056B2
公开(公告)日：2017-11-07
申请号：US14885601
申请日：2015-10-16
Applicant: Analog Devices Global
Inventor： Bin Shao , Danzhu Lu , Junxiao Chen
IPC: H03K17/10 , H03K17/06 , H03K17/687 , H03K17/22
CPC classification number: H03K17/6871 , H03K17/223
Abstract: An active voltage divider circuit is provided comprising: a first node; a second node; a third node; multiple FET load devices coupled in series between the first node and the second node; multiple first switches, each associated with a different FET load device and configured to selectably couple a respective associated bypass circuit between source and drain of its associated FET load device; and second switch circuitry configured to selectably couple a drain of a FET load device, from among the multiple FET load devices, to the third node.
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公开(公告)号：US20170257031A1
公开(公告)日：2017-09-07
申请号：US15072844
申请日：2016-03-17
Applicant: Analog Devices Global
Abstract: Apparatus and methods for controlling voltage converter are provided, in an example, a switched-mode DC-DC voltage converter can include an inductor, at least four switches coupled to the inductor and configured to direct current through the inductor to provide a desired output voltage at an output voltage terminal of the voltage converter using an input voltage supply and a ground reference of the converter, and a controller circuit, configured to receive an indication of inductor current through the inductor and to use the slope of the inductor current to control a change between two operating modes of a group of operating modes that include a boost operating mode, a buck operating mode, and a buck-boost operating mode.
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公开(公告)号：US20170149361A1
公开(公告)日：2017-05-25
申请号：US14972800
申请日：2015-12-17
Applicant: Analog Devices Global
IPC: H02N2/18
CPC classification number: H02N2/181
Abstract: An electronic circuit can be coupled to an energy harvesting device. The output of the energy harvesting device can provide a damped oscillating waveform elicited from a transient stimulus applied to the energy harvesting device, such as in response to mechanical shock or mechanical impact excitation. A first switch can be coupled between the energy harvesting device and an inductor and configured to selectively connect the input node to the inductor. A second switch can be coupled between the inductor and an energy storage device, the second switch configured to selectively couple the inductor to the energy storage device. A control circuit can be coupled to the first and second switches, such as configured to operate the first and second switches according to one or more of an over bias flip technique, a half bias flip technique, or a bias flip technique.
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Patent Agency Ranking
公开(公告)号：US10170929B2
公开(公告)日：2019-01-01
申请号：US15012108
申请日：2016-02-01
Applicant: Analog Devices Global
Inventor： Bin Shao , Yanfeng Lu , Scott D. Biederwolf
Abstract: Apparatus and techniques described herein can include a load circuit comprising a direct current (DC) input terminal, and a source circuit comprising a direct current (DC) output terminal coupled to the DC input terminal of the load circuit. The source circuit can include a source control circuit configured to provide a current-limited DC output voltage and monitor the current-limited DC output voltage to detect an authentication signal provided at the DC output terminal by the load circuit, the load circuit configured to modulate the voltage at the DC output terminal using a pull-down circuit. The load circuit can be configured to compare the supply voltage at the DC input terminal to a reference voltage and, in response, energize other portions of the load circuit when the input current provided the DC input terminal is sufficient as indicated at least in part by the comparison.
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公开(公告)号：US20180226878A1
公开(公告)日：2018-08-09
申请号：US15443950
申请日：2017-02-27
Applicant: Analog Devices Global
Inventor： Bin Shao , Sean Kowalik , Alan S. Walsh , Danzhu Lu
IPC: H02M1/12
CPC classification number: H02M1/12 , G01S7/484 , G01S7/4865 , H01S5/0428 , H02M1/08 , H02M1/143 , H02M3/158 , H02M3/33507 , H03M1/808
Abstract: This application discusses techniques for reducing the energy of an output ripple in a voltage converter at a switching frequency of the voltage converter. In certain examples, an amplitude of a reference voltage can be modulated with a time-varying random value or pseudo-random value to provide a reduction in the energy of the output ripple at the switching frequency of the voltage converter.
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公开(公告)号：US20170085263A1
公开(公告)日：2017-03-23
申请号：US14885601
申请日：2015-10-16
Applicant: Analog Devices Global
Inventor： Bin Shao , Danzhu Lu , Junxiao Chen
IPC: H03K17/687
CPC classification number: H03K17/6871 , H03K17/223
Abstract: An active voltage divider circuit is provided comprising: a first node; a second node; a third node; multiple FET load devices coupled in series between the first node and the second node; multiple first switches, each associated with a different FET load device and configured to selectably couple a respective associated bypass circuit between source and drain of its associated FET load device; and second switch circuitry configured to selectably couple a drain of a FET load device, from among the multiple FET load devices, to the third node.
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公开(公告)号：US09306452B2
公开(公告)日：2016-04-05
申请号：US14229048
申请日：2014-03-28
Applicant: Analog Devices Global
Inventor： Hua-Jung Yang , Bin Shao , Suyi Yao , Yanfeng Lu
CPC classification number: H02M3/156 , H02J1/00 , H02J1/102 , H02J7/00 , H02J7/345 , H02M1/36 , Y10T307/313
Abstract: An apparatus comprises an output port for a circuit load, a first input port for an energy harvest source, an input/output port a second energy source, a first circuit path from the energy harvest source to the second energy source at the input/output port and to the variable load at the output port, a second circuit path from the second energy source to the output port, a cold start circuit that produces a first voltage level at the output port by charging a capacitor at the output port using energy of the energy harvest source, and a main converter circuit that produces a second regulated voltage level at the input/output port using energy of the energy harvest source when the voltage at the output port capacitor is above a specified voltage value and uses the energy of the capacitor at the output port during startup of the main converter circuit.
Abstract translation: 一种装置包括用于电路负载的输出端口，用于能量收集源的第一输入端口，第二能量源的输入/输出端口，输入/输出端处的能量收集源至第二能量源的第一电路路径 端口和输出端口处的可变负载，从第二能量源到输出端口的第二电路路径，冷启动电路，其通过在输出端口处对电容器充电而在输出端口处产生第一电压电平， 能量收集源和主转换器电路，其在输出端口电容器处的电压高于指定电压值时使用能量收集源的能量在输入/输出端口处产生第二调节电压电平，并且使用 在主转换器电路启动期间输出端口处的电容器。
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公开(公告)号：US09209688B2
公开(公告)日：2015-12-08
申请号：US13791240
申请日：2013-03-08
Applicant: ANALOG DEVICES GLOBAL
Inventor： Bin Shao
CPC classification number: H02M3/157 , H02M1/32 , H02M2001/0009 , H02M2001/0035
Abstract: In one aspect, this disclosure relates to a method of controlling current output from a switching regulator to a load via an inductor. Inductor current information can be sampled at a peak level, such as just before a transistor configured to cause current to flow through the inductor is turned off. The sampled inductor current can be compared with a reference current, and a current limit threshold can be adjusted based on the comparison. The output current of the switching regulator can be controlled based on a comparison of the current limit threshold with an indicator of current flowing through the inductor. This method can accurately and efficiently limit current in a switching regulator.
Abstract translation: 一方面，本公开涉及一种通过电感器控制从开关调节器到负载的电流输出的方法。 电感电流信息可以在峰值电平进行采样，例如在配置为使电流流过电感器的晶体管关闭之前。 可以将采样的电感电流与参考电流进行比较，并且可以基于比较来调整限流阈值。 可以基于电流限制阈值与流过电感器的电流指标的比较来控制开关稳压器的输出电流。 该方法可以准确有效地限制开关稳压器中的电流。
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