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21.发明申请公开(公告)号：US20180152099A1
公开(公告)日：2018-05-31
申请号：US15591107
申请日：2017-05-10
Inventor： Filip Savic , Giacomo Calabrese , Giovanni Frattini
CPC classification number: H02M3/156 , H02M2001/0009 , H02M2001/0019
Abstract: A switched voltage converter may be controlled with load current feedforward control loop in addition to an output voltage feedback loop. The converter includes a first switch device that is controlled to open and close at a selected switching rate with a selected duty cycle. The first switch device is coupled in series with an inductor and conducts current through the inductor while the first switch is closed. A second switch device conducts current from the inductor to an output capacitor and to load while the first switch is open to produce an output voltage and a resulting load current through the load. The load current is measured in a continuous manner and a load current feedforward control signal is generated that is representative of the load current. The switch rate and/or duty cycle of the first switch is adjusted in response to the load current feedforward control signal.
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公开(公告)号：US20160329815A1
公开(公告)日：2016-11-10
申请号：US14984076
申请日：2015-12-30
Applicant: Texas Instruments Incorporated
Inventor： Roberto Giampiero Massolini , Maurizio Granato , Giovanni Frattini
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/158 , H02M2001/008 , H02M2001/009
Abstract: Disclosed examples include multiple output DC to DC converters with a buck converter including a half bridge switching circuit and transformer primary winding to provide a first output voltage signal, as well as a boost converter to provide an isolated second output voltage signal. The boost converter includes a transformer secondary winding magnetically coupled with the primary winding to provide a boost converter inductor, a switching circuit, an output diode providing the second output voltage signal, and a PWM controller that synchronizes the boost converter switching with the low side switch of the buck converter based on a sensed voltage of the transformer secondary winding.
Abstract translation: 公开的示例包括具有包括半桥开关电路和变压器初级绕组的降压转换器的多输出DC至DC转换器，以提供第一输出电压信号，以及提供隔离的第二输出电压信号的升压转换器。 升压转换器包括与初级绕组磁耦合的变压器次级绕组，以提供升压转换器电感器，开关电路，提供第二输出电压信号的输出二极管和将升压转换器开关与低压开关同步的PWM控制器 基于感测到的变压器次级绕组的电压的降压转换器。
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公开(公告)号：US09491838B2
公开(公告)日：2016-11-08
申请号：US13690235
申请日：2012-11-30
Applicant: Texas Instruments Incorporated
Inventor： Giovanni Frattini , Evan Reutzel , Jeffrey Morroni , Ali Djabbari , Gerard Socci , Gianpaolo Lisi , Raj Subramoniam , Kosha Mahmodieh
CPC classification number: H05B37/036 , H05B33/083 , H05B33/0842 , H05B37/02
Abstract: Circuits for controlling a plurality of LEDs connected in series are disclosed herein. The circuit includes a plurality of switches, wherein each switch is connectable between the anode and cathode of one of the plurality of LEDs. Each of the switches has a first state wherein current does not pass through the switch and a second state wherein current passes through the switch. The circuit also includes an input for receiving data to program the switches and a data line for transferring data between a circuit controlling second LEDs that are connected in parallel with the first LEDs and the circuit. In addition, the circuit includes a data output for transferring data to other circuits controlling third LEDs that are connected in series with the first LEDs.
Abstract translation: 本文公开了用于控制串联连接的多个LED的电路。 电路包括多个开关，其中每个开关可在多个LED之一的阳极和阴极之间连接。 每个开关具有其中电流不通过开关的第一状态和电流通过开关的第二状态。 电路还包括用于接收数据以编程开关的输入端和用于在控制与第一LED和电路并联连接的第二LED的电路之间传送数据的数据线。 此外，电路包括用于将数据传送到控制与第一LED串联连接的第三LED的其他电路的数据输出。
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公开(公告)号：US20130193852A1
公开(公告)日：2013-08-01
申请号：US13690235
申请日：2012-11-30
Applicant: Texas Instruments Incorporated
Inventor： Giovanni Frattini , Evan Reutzel , Jeffrey Morroni , Ali Djabbari , Gerard Socci , Gianpaolo Lisi , Raj Subramoniam , Kosha Mahmodieh
CPC classification number: H05B37/036 , H05B33/083 , H05B33/0842 , H05B37/02
Abstract: Circuits for controlling a plurality of LEDs connected in series are disclosed herein. The circuit includes a plurality of switches, wherein each switch is connectable between the anode and cathode of one of the plurality of LEDs. Each of the switches has a first state wherein current does not pass through the switch and a second state wherein current passes through the switch. The circuit also includes an input for receiving data to program the switches and a data line for transferring data between a circuit controlling second LEDs that are connected in parallel with the first LEDs and the circuit. In addition, the circuit includes a data output for transferring data to other circuits controlling third LEDs that are connected in series with the first LEDs.
Abstract translation: 本文公开了用于控制串联连接的多个LED的电路。 电路包括多个开关，其中每个开关可在多个LED之一的阳极和阴极之间连接。 每个开关具有其中电流不通过开关的第一状态和电流通过开关的第二状态。 电路还包括用于接收数据以编程开关的输入端和用于在控制与第一LED和电路并联连接的第二LED的电路之间传送数据的数据线。 此外，电路包括用于将数据传送到控制与第一LED串联连接的第三LED的其他电路的数据输出。
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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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Patent Agency Ranking
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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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：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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