STMicroelectronics Fully integrated stepper motor driver mounting the L6472 in a high power PowerSO package EVAL6472PD EVAL6472PD Fiche De Données
Codes de produits
EVAL6472PD
Functional description
L6472
28/70
DocID022729 Rev 3
Figure 12. OSCIN and OSCOUT pin configurations
Note:
When OSCIN is UNUSED, it should be left floating.
When OSCOUT is UNUSED it should be left floating.
When OSCOUT is UNUSED it should be left floating.
6.9 Overcurrent
detection
When the current in any of the Power MOSFETs exceeds a programmed overcurrent
threshold, the STATUS register OCD flag is forced low until the overcurrent event expires
and a GetStatus command is sent to the IC (see
threshold, the STATUS register OCD flag is forced low until the overcurrent event expires
and a GetStatus command is sent to the IC (see
). The overcurrent event expires when all the Power MOSFET currents fall below
the programmed overcurrent threshold.
The overcurrent threshold can be programmed through the OCD_TH register in one of 16
available values ranging from 375 mA to 6 A with steps of 375 mA (see
available values ranging from 375 mA to 6 A with steps of 375 mA (see
It is possible to set if an overcurrent event causes or not the MOSFET turn-off (bridges in
high-impedance status) acting on the OC_SD bit in the CONFIG register (see
high-impedance status) acting on the OC_SD bit in the CONFIG register (see
). The OCD flag in the STATUS register is raised anyway
(see
When the IC outputs are turned off by an OCD event, they cannot be turned on until the
OCD flag is released by a GetStatus command.
OCD flag is released by a GetStatus command.