STMicroelectronics Fully integrated stepper motor driver mounting the L6472 in a high power PowerSO package EVAL6472PD EVAL6472PD Data Sheet
Product codes
EVAL6472PD
DocID022729 Rev 3
51/70
L6472
Programming manual
70
The POW_SR bits set the slew rate value of the power bridge output:
) is performed
through ADCIN voltage (external) or the TVAL_HOLD, TVAL_ACC, TVAL_DEC and
TVAL_RUN registers (internal):
TVAL_RUN registers (internal):
The TSW parameter is used by the current control system and it sets the target switching
period.
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
to be ignored and the NOTPERF_CMD flag to rise (see
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
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)