公开(公告)号：US10420178B2

公开(公告)日：2019-09-17

申请号：US15458450

申请日：2017-03-14

Applicant: Infineon Technologies AG

Inventor： Paolo Milanesi ,  Fabio Fragiacomo ,  Maurizio Galvano ,  Roberto Penzo ,  Enrico Tonazzo

IPC: H05B33/08

Abstract: In one example, a system includes a load module, a power module, a series module, and a control module. The power module is configured to generate a supply power. The load module is configured to select a subset of light emitting diodes (LEDs) from a set of LEDs. The series module is configured to receive the supply power from the power module, dissipate a portion of the supply power, and output, to the subset of LEDs, a remaining portion of the supply power as a load power. The control module is configured to drive the series module to limit an amount of power at the subset of LEDs.

公开(公告)号：US09763296B1

公开(公告)日：2017-09-12

申请号：US15183551

申请日：2016-06-15

Applicant: Infineon Technologies AG

Inventor： Paolo Milanesi ,  Roberto Penzo ,  Maurizio Galvano ,  Fabio Fragiacomo

IPC: H05B37/00 ,  H05B33/08 ,  H02M3/158

CPC classification number: H05B33/0815 ,  H02M2001/0019 ,  H05B33/0824 ,  H05B33/0827 ,  H05B33/083 ,  H05B33/0845

Abstract: In one example, a system includes a load module, a voltage module, and a controller. The load module is configured to selectively bypass each load unit of a plurality of load units to form a series string of load units. The voltage module is configured to output a voltage across the series string of load units that is based on a target voltage. The controller is configured to output an indication of the target voltage, estimate a time delay for switching one or more load units of the plurality of load units, and output, after outputting the indication of the target voltage for the time delay, a control signal to switch one or more load units of the plurality of load units such that the series string of load units has the target quantity of load units.

公开(公告)号：US20160128145A1

公开(公告)日：2016-05-05

申请号：US14530368

申请日：2014-10-31

Applicant: Infineon Technologies AG

Inventor： Paolo Milanesi ,  Roberto Penzo ,  Maurizio Galvano

IPC: H05B33/08 ,  H02M3/158

CPC classification number: H05B33/0827 ,  G01R19/00

Abstract: A current regulator controller includes a differential amplifier that is arranged to output a current sense signal based on a differential input signal and a first stage trim signal. The current regulator controller also includes a first stage trim circuit that is arranged to provide the first stage trim signal. The current regulator controller also includes a digital-to-analog converter that is arranged to provide a set signal based on a digital input signal and a second stage trim signal. The current regulator controller also includes a second stage trim circuit that is arranged to provide the second stage trim signal. The current regulator controller also includes an error amplifier that is arranged to output an error signal based on the set signal and the current sense signal. The regulation of the current is based on the error signal.

Abstract translation: 电流调节器控制器包括差分放大器，其被布置为基于差分输入信号和第一级修整信号输出电流感测信号。 电流调节器控制器还包括布置成提供第一级调整信号的第一级调整电路。 电流调节器控制器还包括数模转换器，其被配置为基于数字输入信号和第二级修整信号提供置位信号。 电流调节器控制器还包括布置成提供第二级调整信号的第二级调整电路。 电流调节器控制器还包括误差放大器，其被布置成基于设定信号和电流检测信号输出误差信号。 电流的调节是基于误差信号的。

公开(公告)号：US10536070B1

公开(公告)日：2020-01-14

申请号：US16052479

申请日：2018-08-01

Applicant: Infineon Technologies AG

Inventor： Roberto Penzo ,  Maurizio Galvano

IPC: H02M3/158 ,  H02M1/08 ,  H01L29/20 ,  H03K17/687 ,  H01L29/778

Abstract: A device for switching Gallium Nitride (GaN) devices includes a high side driver, low side driver, and high side charge circuitry. The high side driver is adapted to control a high side GaN device using a high side supply. The low side driver is adapted to control a low side GaN device using a low side supply. The high side charge circuitry is adapted to charge the high side supply with the low side supply when the low side driver activates the low side GaN device.

公开(公告)号：US20180270923A1

公开(公告)日：2018-09-20

申请号：US15458450

申请日：2017-03-14

Applicant: Infineon Technologies AG

Inventor： Paolo Milanesi ,  Fabio Fragiacomo ,  Maurizio Galvano ,  Roberto Penzo ,  Enrico Tonazzo

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/083

Abstract: In one example, a system includes a load module, a power module, a series module, and a control module. The power module is configured to generate a supply power. The load module is configured to select a subset of light emitting diodes (LEDs) from a set of LEDs. The series module is configured to receive the supply power from the power module, dissipate a portion of the supply power, and output, to the subset of LEDs, a remaining portion of the supply power as a load power. The control module is configured to drive the series module to limit an amount of power at the subset of LEDs.

公开(公告)号：US10070489B1

公开(公告)日：2018-09-04

申请号：US15446530

申请日：2017-03-01

Applicant: Infineon Technologies AG

Inventor： Maurizio Galvano ,  Adolfo De Cicco ,  Roberto Penzo ,  Enrico Tonazzo

IPC: H05B33/08 ,  B60Q1/14 ,  B60Q1/34

Abstract: An example method for preventing overcurrent in light-emitting diode (LED) chains comprises deactivating a current regulation control loop connected to a plurality of LED chains; regulating, via a voltage regulation control loop, a forward voltage of the plurality of LED chains; upon determining that a forward voltage of the plurality of LED chains is equal to a target operating voltage for a subset of the plurality of LED chains, bypassing at least one of the plurality of LED chains such that only the subset of the plurality of LED chains is connected to the current regulation control loop; and upon determining that an output current of the subset of the plurality of LED chains is equal to a target operating current for the subset of the plurality of LED chains: deactivating the voltage regulation control loop; and activating the current regulation control loop.

公开(公告)号：US20170347412A1

公开(公告)日：2017-11-30

申请号：US15169424

申请日：2016-05-31

Applicant: Infineon Technologies AG

Inventor： Paolo Milanesi ,  Roberto Penzo ,  Maurizio Galvano ,  Fabio Fragiacomo

IPC: H05B33/08

CPC classification number: H05B33/089 ,  H05B33/0824 ,  Y02B20/341

Abstract: In one example, a method includes determining, by a device of a system, a voltage feedback value that represents a voltage level of a power signal being provided to a plurality of load elements that are selectively active. In this example, the method also includes adjusting, by the device and based on a quantity of load elements of the plurality of load elements that are active, the voltage level of the power signal such that the voltage feedback value remains less than or equal to an overvoltage threshold.

公开(公告)号：US09203311B2

公开(公告)日：2015-12-01

申请号：US14199633

申请日：2014-03-06

Applicant: Infineon Technologies AG

Inventor： Roberto Penzo ,  Maurizio Galvano ,  Paolo Milanesi ,  Giovanni Capodivacca

IPC: H05B37/02 ,  H02M3/158 ,  H05B33/08

CPC classification number: H02M3/158 ,  H02M3/1582 ,  H02M2001/0003 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2001/322 ,  H02M2003/1566 ,  H05B33/0815 ,  H05B33/083

Abstract: Methods, devices, and integrated circuits are disclosed for applying an active output voltage discharge for a buck-boost converter. One example is directed to a method of operating a buck-boost converter that comprises an inductor, an output capacitor, and an output. The method includes receiving an indication of an altered output voltage requirement in the buck-boost converter. The method further includes deactivating a control loop in the buck-boost converter. The method further includes applying an active discharge of voltage from the output capacitor through the inductor to ground, thereby altering the voltage at the output of the buck-boost converter from a first output voltage to a second output voltage that corresponds to the altered output voltage requirement. The method further includes reactivating the control loop.

Abstract translation: 公开了用于对降压 - 升压转换器施加有效输出电压放电的方法，装置和集成电路。 一个例子涉及一种操作包括电感器，输出电容器和输出的降压 - 升压转换器的方法。 该方法包括在降压 - 升压转换器中接收改变的输出电压要求的指示。 该方法还包括去激活降压 - 升压转换器中的控制回路。 该方法还包括将来自输出电容器的电压的有源放电通过电感器施加到地，从而将降压 - 升压转换器的输出端的电压从第一输出电压改变到对应于改变的输出电压的第二输出电压 需求。 该方法还包括重新启动控制回路。

公开(公告)号：US20150256071A1

公开(公告)日：2015-09-10

申请号：US14199633

申请日：2014-03-06

Applicant: Infineon Technologies AG

Inventor： Roberto Penzo ,  Maurizio Galvano ,  Paolo Milanesi ,  Giovanni Capodivacca

IPC: H02M3/158 ,  H05B33/08

CPC classification number: H02M3/158 ,  H02M3/1582 ,  H02M2001/0003 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2001/322 ,  H02M2003/1566 ,  H05B33/0815 ,  H05B33/083

Abstract: Methods, devices, and integrated circuits are disclosed for applying an active output voltage discharge for a buck-boost converter. One example is directed to a method of operating a buck-boost converter that comprises an inductor, an output capacitor, and an output. The method includes receiving an indication of an altered output voltage requirement in the buck-boost converter. The method further includes deactivating a control loop in the buck-boost converter. The method further includes applying an active discharge of voltage from the output capacitor through the inductor to ground, thereby altering the voltage at the output of the buck-boost converter from a first output voltage to a second output voltage that corresponds to the altered output voltage requirement. The method further includes reactivating the control loop.

Abstract translation: 公开了用于对降压 - 升压转换器施加有效输出电压放电的方法，装置和集成电路。 一个例子涉及一种操作包括电感器，输出电容器和输出的降压 - 升压转换器的方法。 该方法包括在降压 - 升压转换器中接收改变的输出电压要求的指示。 该方法还包括去激活降压 - 升压转换器中的控制回路。 该方法还包括将来自输出电容器的电压的有源放电通过电感器施加到地，从而将降压 - 升压转换器的输出端的电压从第一输出电压改变到对应于改变的输出电压的第二输出电压 需求。 该方法还包括重新启动控制回路。