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公开(公告)号：US20160214140A1
公开(公告)日：2016-07-28
申请号：US15089752
申请日：2016-04-04
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Maurizio Granato , Giovanni Frattini , Roberto Massolini
IPC: B06B1/02
CPC classification number: B06B1/0284 , B06B1/0292 , H04R1/00 , H04R3/06 , H04R2217/03
Abstract: A transducer has an input and produces a mechanical output, wherein the magnitude of the mechanical output of the transducer is dependent on the frequency and magnitude of current at the input. A driver for the transducer includes a device having a transfer function associated with the device, the device having a device input and a device output, the device output being connectable to the input of the transducer and the device input being connectable to a power source. The device attenuates the current output at a frequency that causes a peak in the magnitude of the mechanical output of the transducer.
Abstract translation: 换能器具有输入并产生机械输出，其中换能器的机械输出的大小取决于输入端的电流的频率和幅度。 用于换能器的驱动器包括具有与装置相关联的传递功能的装置，所述装置具有装置输入和装置输出，所述装置输出可连接到所述换能器的输入端，所述装置输入可连接到电源。 该器件以导致换能器的机械输出大小的峰值的频率衰减电流输出。
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公开(公告)号：US09338533B2
公开(公告)日：2016-05-10
申请号：US14204280
申请日：2014-03-11
Applicant: Texas Instruments Incorporated
Inventor： Maurizio Granato , Giovanni Frattini , Roberto Giampiero Massolini
CPC classification number: B06B1/0284 , B06B1/0292 , H04R1/00 , H04R3/06 , H04R2217/03
Abstract: A transducer has an input and produces a mechanical output, wherein the magnitude of the mechanical output of the transducer is dependent on the frequency and magnitude of current at the input. A driver for the transducer includes a device having a transfer function associated with the device, the device having a device input and a device output, the device output being connectable to the input of the transducer and the device input being connectable to a power source. The device attenuates the current output at a frequency that causes a peak in the magnitude of the mechanical output of the transducer.
Abstract translation: 换能器具有输入并产生机械输出，其中换能器的机械输出的大小取决于输入端的电流的频率和幅度。 用于换能器的驱动器包括具有与装置相关联的传递功能的装置，所述装置具有装置输入和装置输出，所述装置输出可连接到所述换能器的输入端，所述装置输入可连接到电源。 该器件以导致换能器的机械输出大小的峰值的频率衰减电流输出。
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公开(公告)号：US10727754B2
公开(公告)日：2020-07-28
申请号：US16367691
申请日：2019-03-28
Applicant: Texas Instruments Incorporated
Inventor： Pierluigi Albertini , Maurizio Granato , Giacomo Calabrese , Roberto Giampiero Massolini , Joyce Marie Mullenix , Giovanni Frattini
Abstract: Disclosed examples include isolated dual active bridge (DAB) DC to DC converters with first and second bridge circuits, a transformer with a sense coil, and a secondary side control circuit to provide secondary side switching control signals to regulate an output voltage or current signal by controlling a phase shift angle between switching transitions of the secondary side switching control signals and switching transitions of a secondary side clock signal, where the secondary side control circuit includes a clock recovery circuit to synchronize the secondary side clock signal to transitions in a sense coil voltage signal of the sense coil.
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公开(公告)号：US10601332B2
公开(公告)日：2020-03-24
申请号：US15859005
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Maurizio Granato , Giovanni Frattini , Shailendra Kumar Baranwal
Abstract: In described examples, an isolated DC-DC converter includes: an input node for receiving an input voltage; a transformer including first and second terminals; first and second low-side switches; and first and second high-side switches. The first low-side switch is coupled between the first terminal and a primary side ground. The second low-side switch is coupled between the second terminal and the primary side ground. The first high-side switch is coupled between the first terminal and the input node and is configured to be activated by a voltage at the second terminal. The second high-side switch is coupled between the second terminal and the input node and is configured to be activated by a voltage at the first terminal. Further, the isolated DC-DC converter includes a switch controller to cause the first and second voltages to alternatingly be zero by opening and closing the first and second low-side switches.
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公开(公告)号：US20190386658A1
公开(公告)日：2019-12-19
申请号：US16555350
申请日：2019-08-29
Applicant: Texas Instruments Incorporated
Inventor： Giacomo Calabrese , Maurizio Granato , Giovanni Frattini
IPC: H03K17/691 , H03K19/00 , H03K5/08
Abstract: Disclosed examples include isolated load switch driver circuits to drive a load, including an impedance circuit that receives a digital input voltage signal from a signal source, and selectively allows a current signal to flow from the signal source to charge a buffer capacitor. An impedance control circuit controls the impedance circuit to limit the current signal in response to the buffer capacitor reaching a first threshold voltage, and an output circuit provides an output isolated from the digital input voltage signal to switch the load. A signaling circuit selectively enables the output circuit to draw power from the buffer capacitor in response to the voltage of the buffer capacitor reaching the first threshold voltage.
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Patent Agency Ranking
公开(公告)号：US10355591B2
公开(公告)日：2019-07-16
申请号：US15658667
申请日：2017-07-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Maurizio Granato , Giovanni Frattini , Pietro Giannelli , Michael Lueders , Christian Rott
Abstract: Described examples include DC to DC converters and systems with switching circuitry formed by four series-connected switches, inductors connected between the ends of the switching circuitry and corresponding output nodes, and with a flying capacitor coupled across interior switches of the switching circuitry and a second capacitor coupled across the ends of the switching circuitry. A control circuit operates the switching circuit to control a voltage signal across the output nodes using a first clock signal and a phase shifted second clock signal to reduce output ripple current and enhance converter efficiency using valley current control. The output inductors are wound on a common core in certain examples.
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公开(公告)号：US10291138B2
公开(公告)日：2019-05-14
申请号：US15712330
申请日：2017-09-22
Applicant: Texas Instruments Incorporated
Inventor： Pierluigi Albertini , Maurizio Granato , Giacomo Calabrese , Roberto Giampiero Massolini , Joyce Marie Mullenix , Giovanni Frattini
CPC classification number: H02M3/33592 , H02M3/33584 , H02M2001/0003 , H03L7/0807
Abstract: Disclosed examples include isolated dual active bridge (DAB) DC to DC converters with first and second bridge circuits, a transformer with a sense coil, and a secondary side control circuit to provide secondary side switching control signals to regulate an output voltage or current signal by controlling a phase shift angle between switching transitions of the secondary side switching control signals and switching transitions of a secondary side clock signal, where the secondary side control circuit includes a clock recovery circuit to synchronize the secondary side clock signal to transitions in a sense coil voltage signal of the sense coil.
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公开(公告)号：US20190089263A1
公开(公告)日：2019-03-21
申请号：US15859145
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Maurizio Granato , Giavanni Frattini , Shailendra Kumar Baranwal
Abstract: In described examples, an isolated DC-DC converter includes an input node for receiving an input voltage, and a transformer including a primary side having first and second terminals and a ground. First and second high-side switches are coupled between the input node and the first and second terminals, respectively. A first low-side switch is coupled between the first terminal and the ground, and through a first voltage limiter to be activated by a voltage at the second terminal. A second low-side switch is coupled between the second terminal and the ground, and through a second voltage limiter to be activated by a voltage at the first terminal A switch controller controls the high-side switches so that voltages across the high-side switches are alternatingly zero, using a current through the primary side to alternatingly charge one terminal to an input voltage and discharge the other terminal to a ground voltage.
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公开(公告)号：US20190052263A1
公开(公告)日：2019-02-14
申请号：US16161128
申请日：2018-10-16
Applicant: Texas Instruments Incorporated
Inventor： Giacomo Calabrese , Maurizio Granato , Giovanni Frattini
IPC: H03K17/691 , H03K5/08 , H03K19/00
CPC classification number: H03K17/691 , H03K5/08 , H03K19/0005
Abstract: Disclosed examples include isolated load switch driver circuits to drive a load, including an impedance circuit that receives a digital input voltage signal from a signal source, and selectively allows a current signal to flow from the signal source to charge a buffer capacitor. An impedance control circuit controls the impedance circuit to limit the current signal in response to the buffer capacitor reaching a first threshold voltage, and an output circuit provides an output isolated from the digital input voltage signal to switch the load. A signaling circuit selectively enables the output circuit to draw power from the buffer capacitor in response to the voltage of the buffer capacitor reaching the first threshold voltage.
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30.发明授权公开(公告)号：US10122367B1
公开(公告)日：2018-11-06
申请号：US15712239
申请日：2017-09-22
Applicant: Texas Instruments Incorporated
Abstract: Disclosed examples include isolated phase shifted dual active bridge DC to DC converters with a first bridge circuit operative according to a primary side clock signal to provide a primary voltage signal to a transformer primary winding, a second bridge circuit operative according to a secondary side clock signal to convert a secondary voltage signal from a transformer secondary winding to provide an output voltage signal, and a secondary side control circuit that alternately operates in a first mode to regulate the output voltage signal by controlling a phase shift angle between switching transitions of secondary side switching control signals and switching transitions of the secondary side clock signal, and a second mode to discontinue the secondary side switching control signals and synchronize the secondary side clock signal to transitions in the secondary voltage signal while the secondary side switching control signals are discontinued.
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