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：US10560990B1

公开(公告)日：2020-02-11

申请号：US16396062

申请日：2019-04-26

Applicant: Infineon Technologies AG

Inventor： Fabio Fragiacomo ,  Paolo Milanesi

IPC: H05B33/08 ,  B60Q1/00 ,  B60Q11/00 ,  B60Q1/04

Abstract: This disclosure is directed to a light emitting diode (LED) circuit for driving two or more different LED strings, which may be controlled in a complimentary fashion. The LED circuit includes current monitoring capabilities that are configured to monitor current through the two or more different LED strings. The circuit is designed in a way that can reduce or eliminate excessive sensing pins that are otherwise needed for the current monitoring. According to this disclosure, for example, very accurate current monitoring can be achieved by using two or more sensing resistors while only using two sensing pins for the current monitoring through two or more different LED strings.

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

IPC: H05B33/08 ,  H05B37/02

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.

公开(公告)号：US09292028B2

公开(公告)日：2016-03-22

申请号：US13624696

申请日：2012-09-21

Applicant: Infineon Technologies AG

Inventor： Giovanni Capodivacca ,  Paolo Milanesi ,  Andrea Scenini

IPC: G05F1/46 ,  H05B33/08

CPC classification number: G05F1/468 ,  H05B33/0815 ,  H05B33/0854

Abstract: A control circuit can control the operation of a switching converter to provide a regulated load current to a load. The switching converter includes an inductor and a high-side and a low side-transistor for switching the load current provided via the inductor. A digital modulator is configured to provide a modulated signal having a duty cycle determined by a digital duty cycle value. A current sense circuit is coupled to at least one of the transistors and is configured to regularly sample a load current value. A comparator is coupled to the current sense circuit and is configured to compare the sampled load current value with a first threshold and to provide a respective comparator output signal. A regulator is configured to receive the comparator output signal and to calculate an updated digital duty cycle value.

Abstract translation: 控制电路可以控制开关转换器的操作以向负载提供调节的负载电流。 开关转换器包括电感器和用于切换经由电感器提供的负载电流的高侧和低侧晶体管。 数字调制器被配置为提供具有由数字占空比值确定的占空比的调制信号。 电流感测电路耦合到晶体管中的至少一个，并被配置为定期对负载电流值进行采样。 比较器耦合到电流感测电路，并且被配置为将采样的负载电流值与第一阈值进行比较，并提供相应的比较器输出信号。 调节器被配置为接收比较器输出信号并计算更新的数字占空比值。

公开(公告)号：US20130082675A1

公开(公告)日：2013-04-04

申请号：US13624696

申请日：2012-09-21

Applicant: INFINEON TECHNOLOGIES AG

Inventor： Giovanni Capodivacca ,  Paolo Milanesi ,  Andrea Scenini

IPC: G05F1/46

CPC classification number: G05F1/468 ,  H05B33/0815 ,  H05B33/0854

Abstract: A control circuit can control the operation of a switching converter to provide a regulated load current to a load. The switching converter includes an inductor and a high-side and a low side-transistor for switching the load current provided via the inductor. A digital modulator is configured to provide a modulated signal having a duty cycle determined by a digital duty cycle value. A current sense circuit is coupled to at least one of the transistors and is configured to regularly sample a load current value. A comparator is coupled to the current sense circuit and is configured to compare the sampled load current value with a first threshold and to provide a respective comparator output signal. A regulator is configured to receive the comparator output signal and to calculate an updated digital duty cycle value.

Abstract translation: 控制电路可以控制开关转换器的操作以向负载提供调节的负载电流。 开关转换器包括电感器和用于切换经由电感器提供的负载电流的高侧和低侧晶体管。 数字调制器被配置为提供具有由数字占空比值确定的占空比的调制信号。 电流感测电路耦合到晶体管中的至少一个，并被配置为定期对负载电流值进行采样。 比较器耦合到电流感测电路，并且被配置为将采样的负载电流值与第一阈值进行比较，并提供相应的比较器输出信号。 调节器被配置为接收比较器输出信号并计算更新的数字占空比值。