参数资料
型号: L6470PD
厂商: STMICROELECTRONICS
元件分类: 运动控制电子
英文描述: STEPPER MOTOR CONTROLLER, 7 A, PDSO36
封装: ROHS COMPLIANT, SSOP-36
文件页数: 25/61页
文件大小: 703K
代理商: L6470PD
L6470
Phase current control
Doc ID 16737 Rev 1
31/61
Figure 13.
Motor supply voltage compensation circuit
Motor supply voltage compensation can be enabled setting high the EN_VSCOMP bit of
CONFIG register (see Table 19, paragraph 9.1.21). If EN_VSCOMP bit is low the
compensation is disabled and the internal analog to digital converter is at user disposal;
sampling rate is always equal to PWM frequency.
7.5
Winding resistance thermal drift compensation
The higher is the winding resistance the greater is the voltage to be applied in order to
obtain the same phase current.
In order to compensate the winding resistance drift an initial system calibration is needed.
Calibration should be performed when the motor is cold (before working).
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