Vbus Voltage-Sensing And Current-Sense Stage; Cc Management; Table 18. Vbus Power Delivery Profiles; Table 19. Voltage-Sensing And Current-Sensing Adc - STMicroelectronics STM32G081B-EVAL User Manual

Hardware layout and configuration
CN7 role
Provider
Consumer
Moreover, the VBUS path on PORT1 presents a discharge mechanism implemented by the
MOSFET T8 and an RC filter and controlled by PB13, and the VBUS path on PORT2
presents a discharge mechanism implemented by the MOSFET T9 and an RC filter and
controlled by PB14.
6.8.4

VBUS voltage-sensing and current-sense stage

Each Type-C port is equipped by a voltage-sensing and a current-sensing stage which are
matched with the voltage sensing carried by the STM32G081RBT6 ADC peripherals. Refer
to Table 19
VBUS.
PORT
PORT 1
PORT 2
6.8.5

CC management

Dead battery, VCONN output and fast role swap functions are supported on CC signal of
Type-C PORT 1.
1. Dead battery enable
Dead battery function is supported by OVP chip U17 and U16. And this function also
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Table 18. VBUS Power Delivery profiles

Solder bridges
setting
SB2, SB3, SB23,
SB26 ON
SB13, SB14, SB15
OFF
SB13, SB14, SB15
ON
SB2, SB3, SB23,
SB26 OFF
-
for detail. They are able to monitor the right power level applied on the port

Table 19. Voltage-sensing and current-sensing ADC

VSENSE ADC
PB1
PA3
Power level
PWM Mode:
PWM voltage-3A
GPIO Mode:
5V / 9V / 15V- 3A
Decided by Provider
which is connected
through Type-C cable
ADC_IN9
ADC_IN3
UM2403 Rev 2
Source
control Voltage control signal
signal
PD3 High PC1-PWM signal
5V: PC1(VSOURCE-
9V) and
PA1(VSOURCE-15V)
tristate
PD3 High
9V: PC1(VSOURCE-
9V) low
15V: PA1 (VSOURCE-
15V) low
PD3 low -
ISENSE ADC
PB10 ADC_IN11
PB12 ADC_IN16
UM2403