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公开(公告)号：US20230246550A1
公开(公告)日：2023-08-03
申请号：US18155407
申请日：2023-01-17
Applicant: STMicroelectronics S.r.l.
Inventor： Ranieri Guerra , Leandro Grasso , Serena Angela Versace , Francesca Giacoma Mignemi , Nunzio Greco
CPC classification number: H02M3/1582 , H02M1/08 , H02M3/157
Abstract: In accordance with an embodiment, a method of operating a buck-boost power supply includes operating the buck-boost power supply in a buck mode by providing a PWM signal to a first half-bridge circuit, and turning on a charge transfer switch coupled between a first boosted supply node of a second driver circuit coupled to the first half-bridge circuit and a second boosted supply node of a second driver circuit coupled to a second half-bridge circuit when a voltage between the second boosted supply node and an output of the second half-bridge circuit is below a first threshold; and operating the buck-boost power supply in a boost mode by providing a PWM signal to the second half-bridge circuit, and turning on the charge transfer switch when the voltage between the first boosted supply node and an output of the first half-bridge circuit is below a second threshold.
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公开(公告)号：US09948193B2
公开(公告)日：2018-04-17
申请号：US15178822
申请日：2016-06-10
Applicant: STMicroelectronics S.r.l.
Inventor： Egidio Ragonese , Nunzio Spina , Pierpaolo Lombardo , Nunzio Greco , Alessandro Parisi , Giuseppe Palmisano
IPC: H02M3/335
CPC classification number: H02M3/33553 , H01L2224/48137 , H02M3/33523 , H02M3/33584 , H02M2001/0012
Abstract: A galvanic isolation is provided between a first circuit and a second circuit. A first galvanically isolated link is configured to transfer power from a first circuit to a second circuit across the galvanic isolation. A second galvanically isolated link is configured to feed back an error signal from the second circuit to the first circuit across the galvanic isolation for use in regulating the power transfer and further configured to support bidirectional data communication between the first and second circuits across the galvanic isolation.
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3.发明申请公开(公告)号：US20190222126A1
公开(公告)日：2019-07-18
申请号：US16244272
申请日：2019-01-10
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Parisi , Nunzio Greco , Nunzio Spina , Egidio Ragonese , Giuseppe Palmisano
CPC classification number: H02M3/33523 , H01F19/08 , H01F27/2804 , H01F2019/085 , H02M1/08 , H02M3/33507 , H02M3/33515 , H02M3/33592 , H02M3/337 , H02M3/338 , H03B5/1215 , H03B5/1228 , H04L27/08
Abstract: A DC-DC converter includes a power oscillator connected to a first transformer winding, and a channel conveying a data stream through galvanic isolation by power signal modulation. A rectifier rectifies the power signal to produce a DC voltage. A comparator produces an error signal from the DC voltage and a reference voltage. An analog-to-digital converter converts the error signal to a digital power control value. A multiplexer multiplexes the digital power control value with the data stream to obtain a multiplexed bitstream. A transmitter driven by the multiplexed bitstream performs amplitude modulation of the power signal at a second transformer winding. A receiver connected to the first winding demodulates the amplitude modulated power signal. A demultiplexer demultiplexes the data stream and the digital power control value. A digital-to-analog converter converts the digital power control value to an analog control signal for the power oscillator.
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公开(公告)号：US10298408B2
公开(公告)日：2019-05-21
申请号：US15138702
申请日：2016-04-26
Applicant: STMicroelectronics S.r.l.
Inventor： Egidio Ragonese , Nunzio Greco , Giuseppe Palmisano
IPC: H04L12/10 , H02J50/10 , H03K17/691 , H03B5/12 , H04B3/54
Abstract: Power and data are transmitted via a transformer including primary side and secondary side. A primary side signal is generated by coupling a first oscillator signal modulated with a data signal with a second oscillator signal that is selectively switched on and off. At the secondary side a secondary signal is generated. A demodulator demodulates the secondary signal to recover the data signal. A rectifier processes the secondary signal to recover a power supply signal controlled by switching on and off the second oscillator.
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公开(公告)号：US20170154727A1
公开(公告)日：2017-06-01
申请号：US15163430
申请日：2016-05-24
Applicant: STMicroelectronics S.r.l.
Inventor： Nunzio Spina , Egidio Ragonese , Giuseppe Palmisano , Nunzio Greco
CPC classification number: H01F38/14 , H01F2038/143 , H01F2038/146 , H01L23/66 , H01L24/06 , H02J50/12 , H02M7/06 , H03B15/00 , H04B5/0037 , H04L25/0266
Abstract: A galvanic isolation system includes a first isolation barrier and a second isolation barrier. The first isolation barrier includes a transformer. The second isolation barrier includes an inductive circuit connected to a secondary winding of the transformer. The first and the second isolation barriers are coupled to form an LC resonant network.
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Patent Agency Ranking
公开(公告)号：US10917091B2
公开(公告)日：2021-02-09
申请号：US16371919
申请日：2019-04-01
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Parisi , Nunzio Greco , Nunzio Spina , Egidio Ragonese , Giuseppe Palmisano
IPC: H03K7/08 , H03K17/691 , H03K17/723 , H03K17/722 , H03B5/06 , H03L7/08 , H03L7/06 , H03L7/183 , H02M3/335 , H02M1/00 , H01F19/08
Abstract: An oscillator is coupled to a first side of a galvanic barrier for supplying thereto an electric supply signal. The oscillator is configured to be alternatively turned on and off as a function of a PWM drive signal applied thereto. A receiver circuit coupled to the galvanic barrier receives therefrom a PWM power control signal. A signal reconstruction circuit coupled between the receiver circuit block and the oscillator provides to the oscillator a PWM drive signal reconstructed from the PWM power control signal. The signal reconstruction circuit includes a PLL circuit coupled to the receiver circuit block and configured to lock to the PWM control signal from the receiver circuit block. A PLL loop within the PLL circuit is sensitive to the PWM drive signal applied to the oscillator. The PLL loop is configured to be opened as a result of the power supply oscillator being turned off.
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公开(公告)号：US10193581B2
公开(公告)日：2019-01-29
申请号：US15468306
申请日：2017-03-24
Applicant: STMicroelectronics S.r.l.
Inventor： Egidio Ragonese , Nunzio Spina , Alessandro Parisi , Pierpaolo Lombardo , Nunzio Greco , Giuseppe Palmisano
Abstract: A galvanic isolation circuit is formed by a differential transformer having primary and secondary windings for transmission of signals over a carrier between the primary and the secondary windings of the transformer. A galvanic isolation oxide layer is provide between the primary and secondary windings. Each winding includes include a center tap providing a low-impedance paths for dc and low frequency components of common-mode currents through the differential transformer. A pass-band stage is coupled to the secondary winding of the transformer and configured to permit propagation of signals over said carrier through the pass-band amplifier stage while providing for a rejection of common-mode noise.
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公开(公告)号：US09978511B2
公开(公告)日：2018-05-22
申请号：US15163430
申请日：2016-05-24
Applicant: STMicroelectronics S.r.l.
Inventor： Nunzio Spina , Egidio Ragonese , Giuseppe Palmisano , Nunzio Greco
CPC classification number: H01F38/14 , H01F2038/143 , H01F2038/146 , H01L23/66 , H01L24/06 , H02J50/12 , H02M7/06 , H03B15/00 , H04B5/0037 , H04L25/0266
Abstract: A galvanic isolation system includes a first isolation barrier and a second isolation barrier. The first isolation barrier includes a transformer. The second isolation barrier includes an inductive circuit connected to a secondary winding of the transformer. The first and the second isolation barriers are coupled to form an LC resonant network.
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9.发明申请A METHOD OF TRANSMITTING POWER AND DATA ACROSS A GALVANIC ISOLATION BARRIER, CORRESPONDING SYSTEM AND APPARATUS 审中-公开一种通过隔离隔离屏障发送电力和数据的方法，相应的系统和设备公开(公告)号：US20170070354A1
公开(公告)日：2017-03-09
申请号：US15138702
申请日：2016-04-26
Applicant: STMicroelectronics S.r.l.
Inventor： Egidio Ragonese , Nunzio Greco , Giuseppe Palmisano
IPC: H04L12/10 , H03K17/691 , H02J50/10
CPC classification number: H04L12/10 , H02J50/10 , H03B5/1215 , H03B5/1228 , H03B5/1234 , H03B2200/0076 , H03C1/36 , H03K17/691 , H04B3/54
Abstract: Power and data are transmitted via a transformer including primary side and secondary side. A primary side signal is generated by coupling a first oscillator signal modulated with a data signal with a second oscillator signal that is selectively switched on and off. At the secondary side a secondary signal is generated. A demodulator demodulates the secondary signal to recover the data signal. A rectifier processes the secondary signal to recover a power supply signal controlled by switching on and off the second oscillator.
Abstract translation: 电源和数据通过包括初级侧和次级侧的变压器传输。 通过将被数据信号调制的第一振荡器信号与选择性地接通和断开的第二振荡器信号相耦合来产生初级侧信号。 在次级侧产生二次信号。 解调器解调辅助信号以恢复数据信号。 整流器处理次级信号以恢复通过接通和断开第二振荡器而控制的电源信号。
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公开(公告)号：US11611280B2
公开(公告)日：2023-03-21
申请号：US17404382
申请日：2021-08-17
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Parisi , Nunzio Greco , Nunzio Spina , Egidio Ragonese , Giuseppe Palmisano
IPC: H02M3/335 , H02M1/08 , H04L27/08 , H01F19/08 , H01F27/28 , H03B5/12 , H02M3/338 , H02M3/337 , H02M3/00
Abstract: A DC-DC converter includes: an transformer having a primary winding and a secondary winding magnetically coupled to the primary winding; a power oscillator applying an oscillating signal to the primary to transmit a power signal to the secondary winding; a rectifier connected to the secondary winding of the transformer to obtain an output DC voltage by rectification of the power signal; comparison circuitry to generate an error signal representing a difference between the output DC voltage and a reference voltage; a transmitter connected to the secondary winding of the transformer to apply an amplitude modulation to the power signal at the secondary winding of the transformer in response to the error signal to thereby produce an amplitude modulated signal at the primary winding; and a receiver and control circuit connected to the primary winding to control an amplitude of the oscillating signal as a function of the amplitude modulated signal.
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