Figure 13.
Config3 - SMPS and LDO cascaded
Figure 14.
Config4 - External SMPS
Caution:
A deadlock occurs if the board SMPS/LDO firmware PWR configuration does not match its hardware
configuration: after the reset, the ST-LINK cannot connect the target anymore.
The firmware PWR configuration must be set as follows in function
SystemClock_Config
in file
main.c
:
•
If the hardware configuration is
Direct SMPS
(Default configuration):
HAL_PWREx_ConfigSupply(PWR_DIRECT_SMPS_SUPPLY);
•
If the hardware configuration is
LDO
:
HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
UM2662
Power supply
UM2662
-
Rev 1
page 21/95