公开(公告)号：US09780770B2

公开(公告)日：2017-10-03

申请号：US15163895

申请日：2016-05-25

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Matteo Scorrano ,  Giuseppe Maiocchi

IPC: H03K17/00 ,  H03K7/08 ,  H03K17/66 ,  H02M7/5387 ,  H02P7/03

CPC classification number: H03K7/08 ,  H02M7/53871 ,  H02P7/04 ,  H03K17/661

Abstract: A control unit is for a bridge circuit. The control unit may include a signal generator configured to generate first and second periodic drive signals for the bridge circuit, and determine a switch-on duration of the first and second periodic drive signals based upon a first digital data value having a first resolution. The control unit may include a controller configured to receive a second digital data value having a second resolution. The second resolution may be greater than the first resolution. The controller may be configured to generate the first digital data value so that, over periods of the first and second periodic drive signals, the first digital data value corresponds to an average of the second digital data value.

公开(公告)号：US09780703B2

公开(公告)日：2017-10-03

申请号：US14824193

申请日：2015-08-12

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Giuseppe Maiocchi

IPC: G05B15/02 ,  H02P6/00

CPC classification number: H02P6/28 ,  H02M5/458 ,  H02P6/006 ,  H02P6/085

Abstract: A power supply may include power generation circuits, each configured to drive a respective winding of a multiphase motor; converter circuits, each configured to generate a digital driving signal for a respective power generation circuit, and a memory configured to store a plurality of fast recirculation compensation values corresponding to combinations of the digital driving signals that would otherwise result in a fast recirculation condition. The power supply may also include a controller coupled to the memory and configured to determine when a given combination of the digital driving signals would otherwise result in a fast recirculation condition, and based upon the determination, substitute at least one corresponding fast recirculation compensation value for the given combination of the digital driving signals.

公开(公告)号：US20170063364A1

公开(公告)日：2017-03-02

申请号：US15163895

申请日：2016-05-25

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Matteo SCORRANO ,  Giuseppe Maiocchi

IPC: H03K7/08

CPC classification number: H03K7/08 ,  H02M7/53871 ,  H02P7/04 ,  H03K17/661

Abstract: A control unit is for a bridge circuit. The control unit may include a signal generator configured to generate first and second periodic drive signals for the bridge circuit, and determine a switch-on duration of the first and second periodic drive signals based upon a first digital data value having a first resolution. The control unit may include a controller configured to receive a second digital data value having a second resolution. The second resolution may be greater than the first resolution. The controller may be configured to generate the first digital data value so that, over periods of the first and second periodic drive signals, the first digital data value corresponds to an average of the second digital data value.

Abstract translation: 控制单元用于桥接电路。 控制单元可以包括被配置为产生桥接电路的第一和第二周期性驱动信号的信号发生器，并且基于具有第一分辨率的第一数字数据值来确定第一和第二周期性驱动信号的接通持续时间。 控制单元可以包括被配置为接收具有第二分辨率的第二数字数据值的控制器。 第二个决议可能比第一个决议大。 控制器可以被配置为产生第一数字数据值，使得在第一和第二周期性驱动信号的周期中，第一数字数据值对应于第二数字数据值的平均值。

公开(公告)号：US09294030B2

公开(公告)日：2016-03-22

申请号：US14168171

申请日：2014-01-30

Applicant: STMicroelectronics S.r.l.

Inventor： Paolo Pascale ,  Federico Magni ,  Ezio Galbiati ,  Giuseppe Maiocchi ,  Michele Berto Boscolo

IPC: G05B19/40 ,  H02P23/00 ,  H02P6/14

CPC classification number: H02P23/0031 ,  H02P6/14 ,  H02P23/0004

Abstract: A method of PWM regulating a motor through a half-bridge drive stage includes sampling the motor current to obtain sampled values during driving intervals or during current decay intervals, and comparing a last sampled value with a current threshold. The motor is coupled in a slow decay electrical path for the duration of a current decay interval if the last sampled value does not exceed the current threshold. Otherwise the motor is coupled in a fast decay electrical path for a portion of the duration of the current decay interval, and is coupled in the slow decay electrical path for a remaining part of the duration of the same current decay interval.

Abstract translation: 通过半桥驱动级PWM调节电动机的方法包括：在驱动间隔期间或电流衰减间隔期间对电动机电流进行采样以获得采样值，并将最后采样值与电流阈值进行比较。 如果最后一个采样值不超过当前阈值，则电机在电流衰减间隔的持续时间内以慢衰减电路连接。 否则，电动机在电流衰减区间的持续时间的一部分中以快速衰减电路连接，并且在慢衰减电路中被耦合在相同电流衰减间隔的持续时间的剩余部分中。