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1. 发明授权

US10305369B2 Noise reduction in a voltage converter 有权
公开(公告)号：US10305369B2
公开(公告)日：2019-05-28
申请号：US15443950
申请日：2017-02-27
申请人： Analog Devices Global
发明人： Bin Shao , Sean Kowalik , Alan S. Walsh , Danzhu Lu
IPC分类号： H02M1/12 , G01S7/48 , H02M3/158 , H02M1/14 , H02M3/335 , G01S7/484 , G01S7/486 , H01S5/042 , H02M1/08 , H03M1/80
摘要： 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.

2. 发明授权

US10599171B2 Load-dependent control of parallel regulators 有权
公开(公告)号：US10599171B2
公开(公告)日：2020-03-24
申请号：US16050742
申请日：2018-07-31
申请人： Analog Devices Global Unlimited Company
发明人： Langyuan Wang , Danzhu Lu , Xiaohan Gong , Bin Shao
IPC分类号： G05F1/46 , G05F1/575
摘要： An electronic circuit includes parallel linear regulator circuits that support a range of different load currents. The electronic circuit includes a first linear regulator circuit coupled to an output node, a second linear regulator circuit coupled in parallel with the first linear regulator circuit and the output node, and a control circuit. The control circuit is configured to monitor the output node and to suppress or inhibit the second linear regulator circuit from supplying the output node when a representation of load power consumption is below a specified threshold. The first linear regulator circuit is configured to continue to supply a portion of the load power when the representation of load power consumption is above the specified threshold, and the control circuit may disable the second linear regulator circuit when the representation of load power consumption is below the specified threshold.

3. 发明申请

US20200042026A1 LOAD-DEPENDENT CONTROL OF PARALLEL REGULATORS 审中-公开
公开(公告)号：US20200042026A1
公开(公告)日：2020-02-06
申请号：US16050742
申请日：2018-07-31
申请人： Analog Devices Global Unlimited Company
发明人： Langyuan Wang , Danzhu Lu , Xiaohan Gong , Bin Shao
IPC分类号： G05F1/46 , G05F1/575
摘要： An electronic circuit includes parallel linear regulator circuits that support a range of different load currents. The electronic circuit includes a first linear regulator circuit coupled to an output node, a second linear regulator circuit coupled in parallel with the first linear regulator circuit and the output node, and a control circuit. The control circuit is configured to monitor the output node and to suppress or inhibit the second linear regulator circuit from supplying the output node when a representation of load power consumption is below a specified threshold. The first linear regulator circuit is configured to continue to supply a portion of the load power when the representation of load power consumption is above the specified threshold, and the control circuit may disable the second linear regulator circuit when the representation of load power consumption is below the specified threshold.

4. 发明申请

US20170201091A1 POWER NODE COMMUNICATION FOR DEVICE DETECTION AND CONTROL 审中-公开
公开(公告)号：US20170201091A1
公开(公告)日：2017-07-13
申请号：US15012108
申请日：2016-02-01
申请人： Analog Devices Global
发明人： Bin Shao , Yanfeng Lu , Scott D. Biederwolf
IPC分类号： H02J1/00
CPC分类号： H02J7/345 , H02J2007/0001
摘要： 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.

5. 发明授权

US09219414B2 Load current readback and average estimation 有权
标题翻译：负载电流回读和平均估计
公开(公告)号：US09219414B2
公开(公告)日：2015-12-22
申请号：US14064490
申请日：2013-10-28
申请人： Analog Devices Global
发明人： Bin Shao
IPC分类号： G05F1/56 , H02M3/158 , H02M3/157 , H02M1/00
CPC分类号： H02M3/158 , H02M3/157 , H02M2001/0009
摘要： A switching regulator or other apparatus or techniques can include load current monitoring to provide a digital representation of an estimated load current. Load current monitoring can be performed by a circuit including a counter circuit, a comparator circuit, and a digitally-controlled source coupled to the counter circuit and configured to adjust a bias condition of a sensing device in response to a count provided by the counter circuit in order to establish a proportional relationship between a current conducted by the sensing device and a corresponding current conducted by a power switching device. The counter circuit is configured to increment and decrement the count in response to information provided by the comparator output and the count is generally indicative of the estimated load current, such as an average load current.
摘要翻译：开关调节器或其他装置或技术可以包括负载电流监视以提供估计负载电流的数字表示。负载电流监视可以由包括计数器电路，比较器电路和耦合到计数器电路的数字控制源的电路执行，并且被配置为响应于由计数器电路提供的计数来调整感测装置的偏置条件以便建立由感测装置传导的电流与由电力开关装置传导的对应电流之间的比例关系。计数器电路被配置为响应于由比较器输出提供的信息而增加和减少计数，并且计数通常表示估计的负载电流，例如平均负载电流。

6. 发明授权

US10224800B2 Load current detection techniques for discontinuous conduction mode 有权
公开(公告)号：US10224800B2
公开(公告)日：2019-03-05
申请号：US15618270
申请日：2017-06-09
申请人： Analog Devices Global
发明人： Danzhu Lu , Bin Shao
IPC分类号： H02M1/08 , H02M3/156 , H02M1/00
摘要： Techniques for indicating a load level of a DC-DC switching converter are provided. IN an example, a method for real-time load current detection for a switching converter using a discontinuous conduction mode (DCM) of operation can include generating a minimum DCM current threshold based on an reference current source and a duty cycle of the switching converter, receiving a representation of inductor charge current from power switch of the switching converter at a comparator, comparing the representation to the DCM current threshold, and controlling the power switch using a discontinuous conduction mode of the switching converter when a peak of the representation exceeds the minimum DCM current threshold.

7. 发明申请

US20180358884A1 LOAD CURRENT DETECTION TECHNIQUES FOR DISCONTINUOUS CONDUCTION MODE 审中-公开
公开(公告)号：US20180358884A1
公开(公告)日：2018-12-13
申请号：US15618270
申请日：2017-06-09
申请人： Analog Devices Global
发明人： Danzhu Lu , Bin Shao
IPC分类号： H02M1/08 , H02M3/156
CPC分类号： H02M1/08 , H02M3/156 , H02M2001/0009
摘要： Techniques for indicating a load level of a DC-DC switching converter are provided. IN an example, a method for real-time load current detection for a switching converter using a discontinuous conduction mode (DCM) of operation can include generating a minimum DCM current threshold based on an reference current source and a duty cycle of the switching converter, receiving a representation of inductor charge current from power switch of the switching converter at a comparator, comparing the representation to the DCM current threshold, and controlling the power switch using a discontinuous conduction mode of the switching converter when a peak of the representation exceeds the minimum DCM current threshold.

8. 发明授权

US10056849B2 Piezoelectric energy harvesting system with frequency mismatch tolerance 有权
公开(公告)号：US10056849B2
公开(公告)日：2018-08-21
申请号：US14623025
申请日：2015-02-16
申请人： Analog Devices Global
发明人： Xing Li , Yong Feng , Bin Shao
IPC分类号： H02N2/18
CPC分类号： H02N2/181
摘要： 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.

9. 发明授权

US10033304B2 Piezoelectric impact energy harvesting 有权
公开(公告)号：US10033304B2
公开(公告)日：2018-07-24
申请号：US14972800
申请日：2015-12-17
申请人： Analog Devices Global
发明人： Yong Feng , Xing Li , Bin Shao
IPC分类号： H02N2/18
摘要： 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.

10. 发明授权

US09813056B2 Active device divider circuit with adjustable IQ 有权
公开(公告)号：US09813056B2
公开(公告)日：2017-11-07
申请号：US14885601
申请日：2015-10-16
申请人： Analog Devices Global
发明人： Bin Shao , Danzhu Lu , Junxiao Chen
IPC分类号： H03K17/10 , H03K17/06 , H03K17/687 , H03K17/22
CPC分类号： H03K17/6871 , H03K17/223
摘要： 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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