公开(公告)号：US10468948B2

公开(公告)日：2019-11-05

申请号：US15066802

申请日：2016-03-10

Applicant: STMicroelectronics S.R.L.

Inventor： Giuseppe D'angelo ,  Michele Bisogno ,  Virginia Clemente

IPC: H02P27/08 ,  H02P31/00 ,  H02K11/02 ,  H02M7/5395 ,  H03K4/06

Abstract: An electric motor is controlled by means of pulse-width modulated control signal having edge transitions occurring at certain transition count values of the pulses of a clock signal which is frequency-modulated with a step-wise frequency modulation (e.g., SSCG or Spread Spectrum Clock Generation). A frequency unmodulated clock signal is provided having a fixed period indicative of the period of the pulse-width modulated control signals. The transition count values are set as a function of a predicted count value and/or a predicted frequency value for the frequency-modulated clock signal. Prediction occurs as a function of the frequency unmodulated clock signal, so that the transition count values are compensated against the step-wise (e.g., SSCG) frequency modulation.

公开(公告)号：US09768717B2

公开(公告)日：2017-09-19

申请号：US14855726

申请日：2015-09-16

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Giuseppe D'Angelo ,  Virginia Clemente ,  Michele Bisogno

IPC: H02P6/18 ,  H02P6/14 ,  H02P6/182 ,  H02P27/08

CPC classification number: H02P6/14 ,  H02P6/182 ,  H02P27/08

Abstract: A driver device for driving a DC motor using PWM modulated drive signals includes comparator circuits for producing digitalized Back-EMF signals having first and second values as a function of the Back-EMF signals being above or below a respective threshold, and an inverter for driving the PWM modulated drive signals in a phased relationship with the digitalized Back-EMF signals. The driver device also includes controller circuits configured for controlling the respective threshold by minimizing the error between a time measured between two consecutive opposed edges of the digitalized Back-EMF signal and half a time measured between two consecutive homologous edges of the digitalized Back-EMF signal.

公开(公告)号：US20170025929A1

公开(公告)日：2017-01-26

申请号：US15066802

申请日：2016-03-10

Applicant: STMicroelectronics S.R.L.

Inventor： Giuseppe D'angelo ,  Michele Bisogno ,  Virginia Clemente

IPC: H02K11/02 ,  H03K4/06 ,  H02P31/00

Abstract: An electric motor is controlled by means of pulse-width modulated control signal having edge transitions occurring at certain transition count values of the pulses of a clock signal which is frequency-modulated with a step-wise frequency modulation (e.g., SSCG or Spread Spectrum Clock Generation). A frequency unmodulated clock signal is provided having a fixed period indicative of the period of the pulse-width modulated control signals. The transition count values are set as a function of a predicted count value and/or a predicted frequency value for the frequency-modulated clock signal. Prediction occurs as a function of the frequency unmodulated clock signal, so that the transition count values are compensated against the step-wise (e.g., SSCG) frequency modulation.

Abstract translation: 电动机通过脉冲宽度调制控制信号进行控制，该脉冲宽度调制控制信号的边沿跃迁是以逐步频率调制（例如，SSCG或扩频时钟 代）。 提供频率未调制的时钟信号，其具有指示脉宽调制控制信号的周期的固定周期。 转换计数值被设置为调频时钟信号的预测计数值和/或预测频率值的函数。 作为频率未调制时钟信号的函数发生预测，使得转换计数值被逐级（例如，SSCG）频率调制补偿。