Invention Grant
- Patent Title: Low-consumption and high-efficiency energy-scavenging interface, method for operating the energy-scavenging interface, and system comprising the energy-scavenging interface
- Patent Title (中): 低耗能高效能量清除界面，操作能量清除界面的方法，以及包含能量清除界面的系统
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Application No.: US14036458Application Date: 2013-09-25
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Publication No.: US09263942B2Publication Date: 2016-02-16
- Inventor: Stefano Ramorini , Alessandro Gasparini , Alberto Cattani
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza (MB)
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza (MB)
- Agency: Gardere Wynne Sewell LLP
- Priority: ITTO2012A0846 20120927
- Main IPC: H02M3/155
- IPC: H02M3/155 ; H02M7/06 ; H02M1/32 ; H02M1/42 ; H02M3/158 ; H02M7/217 ; F03G5/06 ; H01F27/40
Abstract:
An energy-scavenging interface receives an input signal from a transducer and supplies an output signal to a load. A switch is connected between the transducer and a reference node, and a diode is connected between the transducer and the load. A control circuit closes the switch for a time interval to permit energy storage in the transducer. A scale copy of a peak value of stored electric current is obtained. The switch is opened when the time interval elapses and the stored energy exceeds a threshold. The stored energy is then released to supply the load through the diode. The switch remains open as long as the value of current in the output signal exceeds the value of the scaled copy of the peak value.
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