公开(公告)号：US10674578B1

公开(公告)日：2020-06-02

申请号：US16584059

申请日：2019-09-26

Applicant: STMicroelectronics S.r.l.

Inventor： Ignazio Cala′ ,  Salvatore Pantano ,  Santi Carlo Adamo

IPC: G06F3/00 ,  H05B45/10 ,  H03K3/42 ,  H05B47/18 ,  G06F9/30 ,  G06F9/38

Abstract: A circuit includes: a communication interface configured to receive data; a plurality of output terminals; a bank of input registers coupled to the communication interface; a bank of buffer registers; a bank of output registers; a signal generator configured to generate a plurality of output signals based on respective registers of the bank of output registers at respective output terminals; and a conversion stage configured to: when data is received by the bank of input registers from the communication interface, sequentially convert content of the input registers of the bank of input registers and store the converted content into corresponding buffer registers of the bank of buffer registers based on a conversion function, and when the conversion stage finishes storing the converted content into the buffer registers, simultaneously copy content from the buffer registers into corresponding output registers of the bank of output registers.

公开(公告)号：US09078315B2

公开(公告)日：2015-07-07

申请号：US14154573

申请日：2014-01-14

Applicant: STMicroelectronics S.r.l.

Inventor： Salvatore Pantano ,  Marco Martini

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0827 ,  H05B33/0848

Abstract: An array of LED diodes includes N channels each having LEDs coupled in series with a switch. A current driver for the array includes a processing circuit configured to detect N currents flowing respectively through the N channels of the array. The detected currents are converted by a single analog to digital converter, one at a time, into a digital word. The circuit further includes N comparator devices configured to control the N switches as result of a comparison between the digital words and respective target digital words. A memory is provided for storing the digital words received from the analog to digital converter.

Abstract translation: LED二极管阵列包括N个通道，每个通道具有与开关串联的LED。 用于阵列的电流驱动器包括处理电路，其被配置为检测分别通过阵列的N个通道流动的N个电流。 检测到的电流由单个模数转换器转换成一个数字字。 电路还包括N个比较器装置，其被配置为通过数字字和各个目标数字字之间的比较来控制N个开关。 提供存储器，用于存储从模数转换器接收的数字字。

公开(公告)号：US09072139B2

公开(公告)日：2015-06-30

申请号：US14154367

申请日：2014-01-14

Applicant: STMicroelectronics S.r.l.

Inventor： Marco Martini ,  Salvatore Pantano

IPC: H05B33/08 ,  H02M1/36

CPC classification number: H05B33/0815 ,  H02M1/36 ,  H05B33/0812 ,  H05B33/0848 ,  Y02B20/343

Abstract: A current driver for a string of LEDs includes a first series connection of a first transistor and a first resistance and a second series connection of a second transistor and a second resistance. The first and second series connections are coupled in parallel between the string of LEDs and a voltage reference. An operational amplifier selectively drives the first and second transistors in response to a clock signal. A switch device driven by the clock signal alternately applies a reference voltage and a respective one of the voltages across the first and second resistances to inverting and non-inverting inputs of the operational amplifier in response to the clock signal. A storage circuit is coupled to the output of the operational amplifier to store the drive signals for the first and second transistors for application to the first and second transistors in the absence of output from the operational amplifier.

Abstract translation: 用于一串LED的电流驱动器包括第一晶体管和第一电阻的第一串联连接以及第二晶体管和第二电阻的第二串联连接。 第一和第二串联连接并联在LED串和电压基准之间。 运算放大器响应于时钟信号选择性地驱动第一和第二晶体管。 由时钟信号驱动的开关装置响应于时钟信号交替地将参考电压和跨第一和第二电阻的电压中的相应电压施加到运算放大器的反相和非反相输入。 在没有来自运算放大器的输出的情况下，存储电路耦合到运算放大器的输出端以存储用于第一和第二晶体管的驱动信号，以用于第一和第二晶体管。

公开(公告)号：US09160159B2

公开(公告)日：2015-10-13

申请号：US14340031

申请日：2014-07-24

Applicant: STMicroelectronics S.r.l.

Inventor： Salvatore Pantano ,  Marco Martini

IPC: H02H3/08 ,  H02H1/00

CPC classification number: H02H3/08 ,  H02H1/0092 ,  H03K2217/0027

Abstract: An embodiment of an apparatus, such as a circuit breaker, includes an input node, an output node, and a digital circuit. The input node is configured to receive an input voltage, and the output node is coupled to the input node and is configured to carry an output current. And the digital circuit is configured to uncouple the output node from the input node in response to a power drawn from the input node exceeding a threshold.

Abstract translation: 诸如断路器的装置的实施例包括输入节点，输出节点和数字电路。 输入节点被配置为接收输入电压，并且输出节点耦合到输入节点并被配置为承载输出电流。 并且数字电路被配置为响应于从输入节点超过阈值的功率而将输出节点与输入节点分离。

公开(公告)号：US20140197752A1

公开(公告)日：2014-07-17

申请号：US14154573

申请日：2014-01-14

Applicant: STMicroelectronics S.r.l.

Inventor： Salvatore Pantano ,  Marco Martini

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0827 ,  H05B33/0848

Abstract: An array of LED diodes includes N channels each having LEDs coupled in series with a switch. A current driver for the array includes a processing circuit configured to detect N currents flowing respectively through the N channels of the array. The detected currents are converted by a single analog to digital converter, one at a time, into a digital word. The circuit further includes N comparator devices configured to control the N switches as result of a comparison between the digital words and respective target digital words. A memory is provided for storing the digital words received from the analog to digital converter.

Abstract translation: LED二极管阵列包括N个通道，每个通道具有与开关串联的LED。 用于阵列的电流驱动器包括处理电路，其被配置为检测分别通过阵列的N个通道流动的N个电流。 检测到的电流由单个模数转换器转换成一个数字字。 电路还包括N个比较器装置，其被配置为通过数字字和各个目标数字字之间的比较来控制N个开关。 提供存储器，用于存储从模数转换器接收的数字字。

公开(公告)号：US20140197747A1

公开(公告)日：2014-07-17

申请号：US14154367

申请日：2014-01-14

Applicant: STMicroelectronics S.r.l.

Inventor： Marco Martini ,  Salvatore Pantano

IPC: H05B33/08 ,  H02M1/36

CPC classification number: H05B33/0815 ,  H02M1/36 ,  H05B33/0812 ,  H05B33/0848 ,  Y02B20/343

Abstract: A current driver for a string of LEDs includes a first series connection of a first transistor and a first resistance and a second series connection of a second transistor and a second resistance. The first and second series connections are coupled in parallel between the string of LEDs and a voltage reference. An operational amplifier selectively drives the first and second transistors in response to a clock signal. A switch device driven by the clock signal alternately applies a reference voltage and a respective one of the voltages across the first and second resistances to inverting and non-inverting inputs of the operational amplifier in response to the clock signal. A storage circuit is coupled to the output of the operational amplifier to store the drive signals for the first and second transistors for application to the first and second transistors in the absence of output from the operational amplifier.

Abstract translation: 用于一串LED的电流驱动器包括第一晶体管和第一电阻的第一串联连接以及第二晶体管和第二电阻的第二串联连接。 第一和第二串联连接并联在LED串和电压基准之间。 运算放大器响应于时钟信号选择性地驱动第一和第二晶体管。 由时钟信号驱动的开关装置响应于时钟信号交替地将参考电压和跨第一和第二电阻的电压中的相应电压施加到运算放大器的反相和非反相输入。 在没有来自运算放大器的输出的情况下，存储电路耦合到运算放大器的输出端以存储用于第一和第二晶体管的驱动信号，以用于第一和第二晶体管。