公开(公告)号：US20170201091A1

公开(公告)日：2017-07-13

申请号：US15012108

申请日：2016-02-01

Applicant: Analog Devices Global

Inventor： Bin Shao ,  Yanfeng Lu ,  Scott D. Biederwolf

IPC: H02J1/00

CPC classification number: H02J7/345 ,  H02J2007/0001

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.

公开(公告)号：US20190386504A1

公开(公告)日：2019-12-19

申请号：US16011450

申请日：2018-06-18

Applicant: Analog Devices Global Unlimited Company

Inventor： Suyi YAO ,  Yanfeng Lu ,  Ruo Mo

IPC: H02J7/00 ,  H02J3/38 ,  H02J9/06

Abstract: The subject disclosure provides for harvesting energy and converting the harvested energy with high efficiency for multiple power rails to a system load. For example, harvested energy is converted to a regulated output for a first power rail when the harvested energy satisfies a maximum power point tracking (MPPT) threshold, where the MPPT threshold corresponds to a high conversion efficiency. When the harvested energy drops below the MPPT threshold, the regulated output can be driven with stored energy associated with a second power rail from a super capacitor charged with the harvested energy during a high efficiency phase. This helps maintain the high conversion efficiency at the regulated output. In the event that the super capacitor does not have sufficient stored energy, a backup battery may drive the regulated output associated with a third power rail while still maintaining the high conversion efficiency at the regulated output.

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

IPC: H02J1/10 ,  H02J7/34 ,  H02J7/00

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.

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

IPC: H02J3/38 ,  H02J7/34 ,  H02M3/156 ,  H02J1/00 ,  H02J7/00 ,  H02M1/36

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。