公开(公告)号：US20160276070A1

公开(公告)日：2016-09-22

申请号：US14659051

申请日：2015-03-16

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Vratislav Michal

IPC: H01C10/16 ,  H01C1/00 ,  H01C10/50

CPC classification number: H01L22/14 ,  H01C17/22 ,  H01C17/26

Abstract: A method for calibrating a resistance value comprises the steps of measuring a value of a reference capacitor, and adjusting a variable resistor based on the measured value of the reference capacitor. The method may more specifically comprise the steps of directing a constant current through the reference capacitor during a reference time interval; after the reference time interval, directing the constant current through the variable resistor; and varying the variable resistor value progressively by varying a control signal until a voltage of the variable resistor reaches a voltage of the reference capacitor.

Abstract translation: 用于校准电阻值的方法包括测量参考电容器的值，并且基于参考电容器的测量值来调节可变电阻器的步骤。 该方法可以更具体地包括在参考时间间隔期间引导恒定电流通过参考电容器的步骤; 在参考时间间隔之后，引导恒流通过可变电阻器; 并且通过改变控制信号逐渐改变可变电阻器值，直到可变电阻器的电压达到参考电容器的电压。

公开(公告)号：US20180191318A1

公开(公告)日：2018-07-05

申请号：US15393485

申请日：2016-12-29

Applicant: STMicroelectronics (Alps) SAS ,  STMicroelectronics (Grenoble 2) SAS

Inventor： Vratislav Michal ,  Michel Ayraud

IPC: H03F3/45 ,  H03F1/02 ,  G01R1/30 ,  G01R31/36

CPC classification number: H03F3/45179 ,  G01R1/30 ,  G01R31/362 ,  G01R31/3682 ,  H03F1/0205 ,  H03F3/45183 ,  H03F2200/129 ,  H03F2200/261 ,  H03F2200/471 ,  H03F2203/45151

Abstract: A circuit includes an amplifier having a first power terminal configured to be coupled to a supply voltage and a second power terminal configured to be coupled to a reference potential. The circuit further includes a first impedance element coupled between a first input terminal of the amplifier and a first output terminal of the amplifier. The circuit additionally includes a second impedance element coupled between the first input terminal and the reference potential. The amplifier is configured to output a first voltage at a second output terminal of the amplifier in response to the supply voltage being greater than an output voltage at the first output terminal of the amplifier. The amplifier is further configured to output a second voltage at the second output terminal of the amplifier in response to the supply voltage being less than the output voltage at the first output terminal of the amplifier.

公开(公告)号：US20160231760A1

公开(公告)日：2016-08-11

申请号：US14616413

申请日：2015-02-06

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Vratislav Michal

IPC: G05F1/56

CPC classification number: G05F1/56 ,  G05F1/563 ,  G05F1/565

Abstract: A switched-mode power supply device includes a power switch configured to transfer power from a supply line to a load in switched-mode; a first oscillator configured to operate at a frequency proportional to a voltage of the supply line; a second oscillator configured to operate at a frequency proportional to a voltage of the load; and a regulator configured to operate the power switch according to a duty cycle based on a ratio between the first and second oscillator frequencies.

Abstract translation: 开关式电源装置包括电源开关，其被配置为将电力从供电线路以切换模式传送到负载; 第一振荡器，被配置为以与所述电源线的电压成比例的频率工作; 第二振荡器，被配置为以与负载的电压成比例的频率工作; 以及调节器，被配置为基于所述第一和第二振荡器频率之间的比率，根据占空比来操作所述功率开关。