L6472PDTR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

L6472PDTR

dSPIN fully integrated microstepping motor driver with motion engine and SPI

STMicroelectronics 

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L6472

Programming manual

OC_SD

1

0

Table 27. Overcurrent event

Overcurrent event

Bridges shut down

Bridges do not shut down

The POW_SR bits set the slew rate value of the power bridge output:

Table 28. Programmable power bridge output slew rate values

POW_SR [1 … 0]

Output slew rate (1) [V/s](1)

0

0

320

0

1

75

1

0

110

1

1

270

1. See SRout_r and SRout_f parameters in Table 5 on page 11 for details.

The TQREG bit sets if the torque regulation (see Section 7.4 on page 37) is performed

through ADCIN voltage (external) or the TVAL_HOLD, TVAL_ACC, TVAL_DEC and

TVAL_RUN registers (internal):

Table 29. External torque regulation enable

TQREG

External torque regulation enable

0

Internal registers

1

ADC input

The TSW parameter is used by the current control system and it sets the target switching

period.

Table 30. Switching period

TSW [4 … 0]

Switching period

0

0

0

0

0

4 µs (250 kHz)

0

0

0

0

1

0

0

0

1

0

4 µs (250 kHz)

8 µs (125 kHz)

1

1

1

1

1

124 µs (8 kHz)

Any attempt to write the CONFIG register when the motor is running causes the command

to be ignored and the NOTPERF_CMD flag to rise (see Section 9.1.19).

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