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公开(公告)号：US10085314B1
公开(公告)日：2018-09-25
申请号：US15921406
申请日：2018-03-14
Applicant: Infineon Technologies AG
Inventor： Paolo Milanesi , Fabio Fragiacomo , Maurizio Galvano , Roberto Penzo , Enrico Tonazzo
CPC classification number: H05B33/0815 , H05B33/0824 , H05B33/0845 , H05B33/089 , H05B37/0281 , Y02B20/347 , Y02B20/42
Abstract: A device for regulating a voltage includes a first branch switch, a second branch switch, and a control module. The control module is configured to determine an instruction to change from a first state to a second state. In response to the instruction, the control module is configured to activate the second branch switch, drive a power module to increase a supply voltage to provide a supply power for activating a second set of LEDs, drive the first branch switch to dissipate a portion of the supply power to provide a target power for activating a first set of LEDs in response to determining that a current at the second branch switch does not exceed a current threshold, and deactivate the first branch switch in response to determining that the current at the second branch switch exceeds the current threshold.
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公开(公告)号：US20180255613A1
公开(公告)日：2018-09-06
申请号：US15446530
申请日：2017-03-01
Applicant: Infineon Technologies AG
Inventor： Maurizio Galvano , Adolfo De Cicco , Roberto Penzo , Enrico Tonazzo
CPC classification number: H05B33/083 , B60Q1/1423 , B60Q1/34 , H05B33/0812 , H05B33/0815 , H05B33/0851
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.
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公开(公告)号：US20240237171A1
公开(公告)日：2024-07-11
申请号：US18151997
申请日：2023-01-09
Applicant: Infineon Technologies AG
Inventor： Roberto Penzo , Maurizio Galvano
Abstract: Circuitry configured to deliver an adjustable discharge current to a compensation node of a power converter that supplies a load, which may speed up the power to the load on the new steady state condition, while maintaining the stable response time of the power converter. A driver circuit may measure current to the load and perform overshoot protection for the load. The overshoot protection may also generate a pattern of detectable square wave pulses. The circuitry of this disclosure may adjust the discharge current based on a duration of the pulses in the pattern of pulses, as well as based on a pulse density of the pulses.
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公开(公告)号：US20200044554A1
公开(公告)日：2020-02-06
申请号：US16052479
申请日：2018-08-01
Applicant: Infineon Technologies AG
Inventor： Roberto Penzo , Maurizio Galvano
IPC: H02M1/08 , H01L29/20 , H01L29/778 , H03K17/687
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.
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公开(公告)号：US09584022B1
公开(公告)日：2017-02-28
申请号：US15062746
申请日：2016-03-07
Applicant: Infineon Technologies AG
Inventor： Maurizio Galvano , Roberto Penzo , Paolo Milanesi
CPC classification number: H02M3/158 , H02M3/1582 , H02M3/1584 , H02M2001/0045 , H02M2003/1557 , H05B33/0815 , H05B33/083
Abstract: In accordance with an embodiment, a method includes receiving an indication of a changed load condition or voltage characteristic of a power supply providing power to a load via an output port of the power supply in a first mode, and switching regulation of the power supply from sourcing a current to the load in the first mode to sinking the current from the load in a second mode in response to receiving the indication of the changed load condition or voltage characteristic. Sinking the current from the load in the second mode includes controlling the power supply to transfer energy from the output port of the power supply to an input port of the power supply.
Abstract translation: 根据实施例，一种方法包括：以第一模式，经由电源的输出端口接收对负载提供电力的电源的改变的负载状况或电压特性的指示，以及从第 响应于接收到改变的负载条件或电压特性的指示，在第一模式中将电流提供给负载，以在第二模式中从负载吸收电流。 在第二模式中将来自负载的电流下沉包括控制电源以将能量从电源的输出端口传送到电源的输入端口。
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Patent Agency Ranking
公开(公告)号：US20230403776A1
公开(公告)日：2023-12-14
申请号：US17806396
申请日：2022-06-10
Applicant: Infineon Technologies AG
Inventor： Mattia Montoncelli , Maurizio Galvano , Christos Konstantopoulos , Roberto Penzo , Enrico Tonazzo
CPC classification number: H05B45/30 , H05B45/40 , G01R19/0092 , G05F1/56 , B60R16/03
Abstract: A circuit may be configured to deliver current to one or more light emitting diodes (LEDs). The circuit may comprise a first current path configured to deliver a first current to the one or more LEDs, and a second current path in parallel with the first current path, wherein the second current path is configured to deliver a second current through a voltage drop element and to the one or more LEDs. According to this disclosure, a sum of the first current and the second current is regulated based on a sensed current through the circuit.
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公开(公告)号：US10111299B2
公开(公告)日：2018-10-23
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
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.
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公开(公告)号：US09326335B1
公开(公告)日：2016-04-26
申请号：US14530368
申请日：2014-10-31
Applicant: Infineon Technologies AG
Inventor： Paolo Milanesi , Roberto Penzo , Maurizio Galvano
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。
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公开(公告)号：US11849514B1
公开(公告)日：2023-12-19
申请号：US17806396
申请日：2022-06-10
Applicant: Infineon Technologies AG
Inventor： Mattia Montoncelli , Maurizio Galvano , Christos Konstantopoulos , Roberto Penzo , Enrico Tonazzo
CPC classification number: H05B45/30 , B60R16/03 , G01R19/0092 , G05F1/56 , H05B45/35 , H05B45/355 , H05B45/40
Abstract: A circuit may be configured to deliver current to one or more light emitting diodes (LEDs). The circuit may comprise a first current path configured to deliver a first current to the one or more LEDs, and a second current path in parallel with the first current path, wherein the second current path is configured to deliver a second current through a voltage drop element and to the one or more LEDs. According to this disclosure, a sum of the first current and the second current is regulated based on a sensed current through the circuit.
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公开(公告)号：US10582579B1
公开(公告)日：2020-03-03
申请号：US16267234
申请日：2019-02-04
Applicant: Infineon Technologies AG
Inventor： Paolo Milanesi , Roberto Penzo
IPC: H02M3/158 , H05B33/08 , G01R19/165 , H02M1/00
Abstract: A controller circuit for controlling a switching-mode power supply (SMPS) is configured to receive a load control signal indicating an on state when a load is to be coupled to the SMPS and an off state when the load is not to be coupled to the SMPS. In response to the load control signal transitioning from the on state to the off state, the controller circuit is configured to generate a first measured input voltage. In response to the load control signal transitioning from the off state to the on state, the controller circuit is configured to generate a second measured input voltage. The controller circuit is configured to drive a compensation voltage at a compensation element using the first measured input voltage and the second measured input voltage and selectively switch the SMPS using the compensation voltage after driving the compensation voltage.
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