Vbus Voltage-Sensing And Current-Sense Stage; Cc Management; Table 16. Vbus Power Delivery Profiles; Table 17. Voltage-Sensing And Current-Sensing Adc - ST STM32G081B-EVAL User Manual

UM2403
8.8.4
PORT
PORT 1
PORT 2
8.8.5
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Table 16. VBUS Power Delivery profiles

Solder bridges
CN7 role
setting
SB2, SB3, SB23,
SB26 ON
SB13, SB14, SB15
OFF
Provider
SB13, SB14, SB15
ON
SB2, SB3, SB23,
SB26 OFF
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.

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 17 for detail. They are able to monitor the right power level applied on the port
VBUS.

Table 17. Voltage-sensing and current-sensing ADC

VSENSE ADC
PB1
PA3

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
Hardware layout and configuration
Power level
PWM Mode:
PD3 High
PWM voltage-3A
GPIO Mode:
PD3 High
5V / 9V / 15V- 3A
Decided by Provider
which is connected PD3 low
through Type-C cable
ADC_IN9 PB10
ADC_IN3 PB12
UM2403 Rev 1
Source
control Voltage control signal
signal
PC1-PWM signal
5V: PC1(VSOURCE-
9V) and
PA1(VSOURCE-15V)
tristate
9V: PC1(VSOURCE-
9V) low
15V: PA1 (VSOURCE-
15V) low
-
ISENSE ADC
ADC_IN11
ADC_IN16
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