ST X-NUCLEO-USBPDM1, Руководство пользователя

Страница: 9 / 19

6 NUCLEO-G071RB Type-C powered mode Sink contract negotiation
In this case, dead battery clamps are managed by STM32G071RB in low power mode.
NUCLEO-071RB must be powered by ST-LINK micro-USB connector (JP2 STLK jumper closed).
Step 1. Connect the NUCLEO-071RB micro-USB connector (CN1) to your PC.
NUCLEO-071RB appears as a virtual disk (NODE_G071RB).
Step 2. To program the STM32G071RB , drag and drop the binary file corresponding to the required voltage
(
G071RB_TCPP01_low-power_no-DB-mng_SNK_xxV_v1.bin, xx
is the selected voltage) to the
virtual disk.
LD1 blinks red and green for few seconds. When it does not blink anymore, programming is complete.
Step 3. Plug the X-NUCLEO-USBPDM1 expansion board on top of the NUCLEO-071RB development board.
Step 4. On X-NUCLEO-USBPDM1 JP1, close CC1_G0 and CC2_G0 , and leave the other jumpers open.
Step 5. On X-NUCLEO-USBPDM1 JP2, close Vcc–Vcc_OUT and DB-DB_OUT and leave the other jumpers
open.
X-NUCLEO-USBPDM1 CN1 (USB Type-C receptacle) can be connected to any Type-C source. The X-
CUBE-USBPDM1 selects the highest and closest power profile to the value indicated by the binary file
from available power profiles on the source. The obtained voltage can be measured on X-NUCLEO-
USBPDM1 CN2.
Step 6. Disconnect the micro-USB cable from NUCLEO-071RB CN1 and the USB Type-C cable from X-
NUCLEO-USBPDM1 CN1.
Step 7. Remove the power supply from NUCLEO-071RB (JP2 fully open).
Step 8. On X-NUCLEO-USBPDM1 JP2, close LDO OUT 3.3 V , 3.3 V–NRST , Vcc–Vcc_OUT and DB-
DB_OUT and leave the other jumpers open.
As previously mentioned, X-NUCLEO-USBPDM1 CN1 (USB Type-C receptacle) can be connected to
any Type-C source. The X-CUBE-USBPDM1 selects the highest and closest power profile to the value
indicated by the binary file from available power profiles on the source. STM32G474RE is then
powered by Type-C connector and X-NUCLEO-USBPDM1 can be fine tuned with V
BUS
OVP voltage
selection thanks to R0 position change or via USB BC 1.2 check on source (short on D+/-) thanks to
R8 and R9 zero Ohm resistor position change to R10 and R11 positions.
This configuration is relevant for a battery-powered device thanks to the low power mode (Vcc
connected to GPIO). This results in zero power consumption for the
TCPP01-M12 when the Type-C
cable is unplugged.
UM2668
NUCLEO-G071RB Type-C powered mode Sink contract negotiation
UM2668 - Rev 2
page 9/19