L6472 STMICROELECTRONICS [STMicroelectronics], L6472 Datasheet - Page 37

• Manufacturer Part Number: L6472
• Description: dSPIN fully integrated microstepping motor driver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

L6472
7.4
Figure 19. Fast decay tuning during the falling steps
Torque regulation (output current amplitude regulation)
The output current amplitude can be regulated in two ways: writing the TVAL_ACC,
TVAL_DEC, TVAL_RUN and TVAL_HOLD registers or varying the ADCIN voltage value.
The EN_TQREG bit (CONFIG register) sets the torque regulation method. If this bit is high,
the ADC_OUT prevalue is used to regulate output current amplitude (see
Otherwise the internal analog-to-digital converter is at the user’s disposal and the output
current amplitude is managed by the TVAL_HOLD, TVAL_RUN, TVAL_ACC and
TVAL_DEC registers (see
The voltage applied to the ADCIN pin is sampled at fS frequency and converted in an NADC
bit digital signal. The analog-to-digital conversion result is available in the ADC_OUT
register.
Section
Doc ID 022729 Rev 1
9.1.10).
Phase current control
Section
9.1.14).
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