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公开(公告)号：US11469665B2
公开(公告)日：2022-10-11
申请号：US17147123
申请日：2021-01-12
摘要： A switching converter includes a voltage conversion circuit providing an output voltage from an input voltage and a PWM voltage generated in response to first and second oscillating voltages. The input stage of a transconductor circuit provides an input reference current following a difference between a reference voltage and a voltage dependent on the output voltage and according to a transconductance, and an output stage for providing an output reference current from the input reference current. A phase shifter shifts an oscillating reference voltage according to the output reference current to obtain the first and second oscillating voltages. The transconductance is controlled in response to the input voltage resulting in a change of the input reference current. Compensation for that change is provided by subtracting a variable compensation current from the input reference current, where the variable compensation current is generated in response to the input voltage.
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公开(公告)号：US11057028B2
公开(公告)日：2021-07-06
申请号：US16559118
申请日：2019-09-03
摘要： A DC-DC converter includes clock generation circuitry generating first and second clock signals that are out of phase, and a control signal generator generating a switching control signal at an edge of the second clock signal based upon a comparison of an error voltage to a summed voltage. Boost circuitry charges an energy storage component during an on-phase and discharges the energy storage component during an off-phase to thereby generate an output voltage. The on-phase and off-phase are set as a function of the switching control signal. Sum voltage generation circuitry generates a ramp voltage in response to an edge of the first clock signal and generates the summed voltage at an edge of the second clock signal. The sum voltage represents a sum of the ramp voltage and a voltage representative of the current flowing in the energy storage component during the on-phase.
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公开(公告)号：US09680323B2
公开(公告)日：2017-06-13
申请号：US14505029
申请日：2014-10-02
CPC分类号： H02J7/007 , H02J7/0052 , H02J7/345 , H02J2007/0059 , H02M3/158 , H02M2001/009
摘要： An energy harvesting circuit receives an input voltage from a transducer and uses a single inductor operating in a DC-DC converter charging mode to generate charging current at a first output coupled to an energy storage device where a supply voltage is stored. The energy harvesting circuit further receives the supply voltage from the energy storage device and uses the same single inductor operating in a DC-DC converter regulating mode to generate load current at a second output where a regulated load voltage is provided. The energy harvesting circuit switches between the charging mode and the regulating mode in accordance with a discontinuous mode (DCM) control process.
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4.发明授权Step counter device with energy-scavenging functionality, and step-counting method 有权具有能量清除功能的步进式装置和步进计数方法公开(公告)号：US09587959B2
公开(公告)日：2017-03-07
申请号：US14034764
申请日：2013-09-24
CPC分类号： G01C22/006 , A43B3/0015 , H02M7/219
摘要： A step-counter device detects and counts user steps. The device includes a transducer configured to generate an electrical transduction signal in response to user stepping. An energy-scavenging system is coupled to the transducer to generate a power supply voltage in response to the electrical transduction signal. A processing unit is powered by the power supply voltage. The processing unit is further configured to sense the electrical transduction signal and determine whether a user step has occurred and in response to that determination increment a step counter.
摘要翻译： 步进计数器装置检测和计数用户步骤。 该装置包括被配置为响应于用户步进产生电传导信号的换能器。 能量清除系统耦合到换能器以响应于电传导信号产生电源电压。 处理单元由电源电压供电。 处理单元还被配置为感测电转换信号并且确定用户步骤是否已经发生，并且响应于该确定增量而进行步进计数器。
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5.发明授权High-efficiency energy harvesting interface and corresponding energy harvesting system 有权高效能量采集接口和相应的能量采集系统公开(公告)号：US09564800B2
公开(公告)日：2017-02-07
申请号：US15163394
申请日：2016-05-24
摘要： An electrical-energy harvesting system envisages a transducer for converting energy from an environmental energy source into a transduced signal, an electrical energy harvesting interface for receiving the transduced signal and for supplying a harvesting signal, and an energy storage element coupled to the electrical energy harvesting interface for receiving the harvesting signal. The electrical-energy harvesting system also includes a voltage converter connected to the electrical energy harvesting interface for generating a regulated voltage. The harvesting interface samples an open-circuit voltage value of the transduced signal, generates an optimized voltage value starting from the open-circuit voltage value, and generates an upper threshold voltage and a lower threshold voltage on the basis of the optimized voltage value. The harvesting interface controls the voltage converter in switching mode so that the harvesting signal has a value between the upper and lower threshold voltages in at least one operating condition.
摘要翻译： 电能收集系统设想用于将来自环境能源的能量转换成转换信号的换能器，用于接收转换信号并用于提供收获信号的电能收集界面，以及耦合到电能收集的能量存储元件 用于接收收获信号的接口。 电能收集系统还包括连接到电能收集界面的电压转换器，用于产生调节电压。 采集接口采样转换信号的开路电压值，从开路电压值开始产生优化的电压值，并根据优化电压值生成上阈值电压和下阈值电压。 采集接口以开关模式控制电压转换器，使得收集信号在至少一个操作条件下具有在上限和下限阈值电压之间的值。
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6.发明申请ENERGY SCAVENGING INTERFACE WITH IMPEDANCE MATCHING, METHOD FOR IMPEDANCE MATCHING OF THE ENERGY SCAVENGING INTERFACE, AND ENERGY SCAVENGING SYSTEM USING THE ENERGY SCAVENGING INTERFACE 审中-公开具有阻尼匹配的能量扫描接口，能量消除接口的阻抗匹配方法和使用能量扫描接口的能量扫描系统公开(公告)号：US20160322830A1
公开(公告)日：2016-11-03
申请号：US15132958
申请日：2016-04-19
摘要： An energy harvesting interface receives an electrical signal from an inductive transducer and outputs a supply signal. An input branch includes a first switch and a second switch connected in series between a first input terminal and an output terminal, and further a third switch and a fourth switch connected in series between a second input terminal and the output terminal. A first electrical-signal-detecting device coupled across the second switch detects a first threshold value of an electric storage current in the inductor of the transducer. A second electrical-signal-detecting device coupled across the fourth switch detects whether the electric supply current that flows through the fourth switch reaches a second threshold value lower than the first threshold value.
摘要翻译： 能量收集界面从感应传感器接收电信号并输出电源信号。 输入分支包括串联连接在第一输入端和输出端之间的第一开关和第二开关，以及串联连接在第二输入端和输出端之间的第三开关和第四开关。 耦合在第二开关上的第一电信号检测装置检测换能器的电感器中的蓄电电流的第一阈值。 耦合在第四开关上的第二电信号检测装置检测流过第四开关的电源电流是否达到低于第一阈值的第二阈值。
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公开(公告)号：US11323031B2
公开(公告)日：2022-05-03
申请号：US16924410
申请日：2020-07-09
摘要： First and second FETs of a half-bridge are series connected between first and second terminals and are gate driven, respectively, by first and second drivers. An inductance is connected to the intermediate node of the half-bridge. Power supply for the second driver circuit is a supply voltage generated by a voltage regulator as a function of the voltage between the first and the second terminal. Power supply for the first driver circuit is a supply voltage generated by a bootstrap capacitor having a first terminal connected via a first switch to receive the supply voltage output from the voltage regulator and a second terminal connected to the intermediate node. The first terminal of the bootstrap capacitor is further connected by a second switch to receive a second supply voltage. A control circuit generates control signals for the first and second driver circuits and the first and second switches.
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公开(公告)号：US10897200B2
公开(公告)日：2021-01-19
申请号：US16406834
申请日：2019-05-08
摘要： A half-bridge converter is controlled by a circuit including a differential circuit receiving a reference signal and a feedback signal which is a function of an output signal from the converter. The half-bridge converter includes high-side and low-side electronic switches. A comparator generates a PWM-modulated signal for controlling the converter as a function of the duty cycle of the PWM-modulated signal in response to a signal at an intermediate node between the high-side and low-side electronic switches and an output of the differential circuit. A gain circuit block coupled between the intermediate node and the input of the comparator applies a ramp signal to the input of the comparator which is a function of the signal at the intermediate node. A variable gain is applied by the gain circuit block in order to keep a constant value for the duty cycle of said PWM-modulated signal irrespective of converter operation.
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公开(公告)号：US10277178B2
公开(公告)日：2019-04-30
申请号：US15692425
申请日：2017-08-31
摘要： A triangular-voltage generator has an input terminal that receives a power supply voltage and an output terminal that supplies a triangular-wave voltage having a repetition period. An operational amplifier in an integrator configuration has a first input, a second input and an output coupled to the output terminal. The second input receives a reference voltage as a function of the power supply voltage. The first input is selectively and alternately connected to the input terminal during a first half-period of the repetition period and to a reference terminal during a second half-period of the repetition period.
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公开(公告)号：US20180234062A1
公开(公告)日：2018-08-16
申请号：US15692425
申请日：2017-08-31
CPC分类号： H03F3/217 , H03F1/0211 , H03F3/2173 , H03F2200/141 , H03F2200/351 , H03K4/06 , H03K4/066
摘要： A triangular-voltage generator has an input terminal that receives a power supply voltage and an output terminal that supplies a triangular-wave voltage having a repetition period. An operational amplifier in an integrator configuration has a first input, a second input and an output coupled to the output terminal. The second input receives a reference voltage as a function of the power supply voltage. The first input is selectively and alternately connected to the input terminal during a first half-period of the repetition period and to a reference terminal during a second half-period of the repetition period.
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