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公开(公告)号：US20190089262A1
公开(公告)日：2019-03-21
申请号：US15859135
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Maurizio Granato , Giacomo Calabrese , Giovanni Frattini
Abstract: An isolated DC-DC converter 400 includes a plurality of modules, an output node, and a transformer with a secondary side having first and second terminals and a secondary side ground. Ones of the modules includes a first low-side switch coupled between the first terminal and a low-voltage node, and a second low-side switch is coupled between the second terminal and the low-voltage node. A first high-side switch is coupled between the first terminal and a high-voltage node, and is activated by a voltage at the second terminal. A second high-side switch is coupled between the second terminal and the high-voltage node, and is activated by a voltage at the first terminal. The isolated DC-DC converter also includes a switch controller to open and close the first and second low-side switches at times corresponding to a frequency of the converter.
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公开(公告)号：US20190089261A1
公开(公告)日：2019-03-21
申请号：US15859005
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Maurizio Granato , Giavanni Frattini , Shailendra Kumar Baranwal
CPC classification number: H02M3/33592 , H02M1/088 , H02M3/337 , H02M2001/0054 , H02M2001/0058
Abstract: In described examples, an isolated DC-DC converter includes: an input node for receiving an input voltage; a transformer including a primary side having first and second terminals and a primary side ground; and first and second low-side switches. The first low-side switch is coupled between the first terminal and the primary side ground. The second low-side switch is coupled between the second terminal and the primary side ground. A first voltage is across the first low-side switch, and a second voltage is across the second low-side switch. Also, the isolated DC-DC converter includes first and second high-side switches. 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, as follows. The first low-side switch is closed when the first voltage is zero. During a first phase, the first low-side switch is opened at a time to enable a current through the primary side to charge the first terminal to the input voltage while discharging the second terminal to reduce the second voltage to zero. The second low-side switch is closed when the second voltage is zero. During a second phase, the second low-side switch is opened at a time to enable the current through the primary side to charge the second terminal to the input voltage while discharging the first terminal to reduce the first voltage to zero.
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公开(公告)号：US20160329809A1
公开(公告)日：2016-11-10
申请号：US14840183
申请日：2015-08-31
Inventor： Maurizio Granato , Giovanni Frattini , Pietro Giannelli , Michael Lueders , Christian Rott
IPC: H02M3/158
CPC classification number: H02M3/158 , H02M2001/0003
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.
Abstract translation: 所描述的示例包括DC-DC转换器和具有由四个串联连接的开关构成的开关电路的系统，连接在开关电路的端部和对应的输出节点之间的电感器，以及耦合在开关电路的内部开关和第二 电容器耦合在开关电路的两端。 控制电路操作开关电路以使用第一时钟信号和相移的第二时钟信号跨输出节点控制电压信号，以减少输出纹波电流并且使用谷值电流控制来提高转换器效率。 在某些实例中，输出电感器缠绕在公共芯上。
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公开(公告)号：US20150264455A1
公开(公告)日：2015-09-17
申请号：US14204280
申请日：2014-03-11
Applicant: Texas Instruments Incorporated
Inventor： Maurizio Granato , Giovanni Frattini , Roberto Giampiero Massolini
IPC: H04R1/00
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：US20200287473A1
公开(公告)日：2020-09-10
申请号：US16822268
申请日：2020-03-18
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 a primary side having first and second terminals and a primary side ground; and first and second low-side switches. The first low-side switch is coupled between the first terminal and the primary side ground. The second low-side switch is coupled between the second terminal and the primary side ground. A first voltage is across the first low-side switch, and a second voltage is across the second low-side switch. Also, the isolated DC-DC converter includes first and second high-side switches. The first high-side switch is coupled between the first terminal and the input node. The second high-side switch is coupled between the second terminal and the input node. Further, the isolated DC-DC converter includes a switch controller.
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Patent Agency Ranking
公开(公告)号：US10173243B2
公开(公告)日：2019-01-08
申请号：US15089752
申请日：2016-04-04
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Maurizio Granato , Giovanni Frattini , Roberto Massolini
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.
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公开(公告)号：US09748841B2
公开(公告)日：2017-08-29
申请号：US14840183
申请日：2015-08-31
Inventor： Maurizio Granato , Giovanni Frattini , Pietro Giannelli , Michael Lueders , Christian Rott
CPC classification number: H02M3/158 , H02M2001/0003
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：US10432102B2
公开(公告)日：2019-10-01
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
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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9.发明申请公开(公告)号：US20190229637A1
公开(公告)日：2019-07-25
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：US20190097544A1
公开(公告)日：2019-03-28
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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