Datasheet

DocID022729 Rev 3 51/70

L6472 Programming manual

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

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):

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

period.

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).

Table 27. Overcurrent event

OC_SD Overcurrent event

1 Bridges shut down

0 Bridges do not shut down

Table 28. Programmable power bridge output slew rate values

POW_SR [1 … 0] Output slew rate (1) [V/s]

(1)

1. See S

Rout_r

and S

Rout_f

parameters in Table 5 on page 11 for details.

0 0 320

0 1 75

1 0 110

1 1 270

Table 29. External torque regulation enable

TQREG External torque regulation enable

0 Internal registers

1 ADC input

Table 30. Switching period

TSW [4 … 0] Switching period

0 0 0 0 0 4 µs (250 kHz)

0 0 0 0 1 4 µs (250 kHz)

0 0 0 1 0 8 µs (125 kHz)

…

1 1 1 1 1 124 µs (8 kHz)