ST STLINK-V3PWR User Manual

If the overcurrent disappears before t
_short_ocp
duration, then the OUT LED blinks red/green for 2s duration (refer
to T
able 8. OUT LED) and a warning popup message is displayed on the STM32CubeMonitor-Power windows.
An overcurrent longer than t
_short_ocp
duration is considered a long overcurrent.
Long overcurrent
A long overcurrent is a current consumption within OCP
th
< IOUT < OCP
max
having a duration longer than
t
_short_ocp
.
Once a long overcurrent condition occurs:
• SMU output is turned OFF.
• Current measurement is stopped.
• OUT LED turns red.
• Error popup message is displayed on the STM32CubeMonitor-Power windows.
Short circuit
A short circuit is detected when the SMU output voltage drops below 10% of the programmed voltage due to I
OUT
> OCP
MAX
.
A short circuit is managed as a long overcurrent by STLINK-V3PWR (refer to Long overcurrent).
Note: Long overcurrent and short circuits are considered fatal errors. Accordingly, the user must disconnect and
reconnect STLINK-V3PWR from the host PC to restart STLINK-V3PWR.
Warning: As mentioned, STLINK-V3PWR tolerates overcurrent and short circuits. Consequently, as
STLINK-V3PWR is supplied from a host PC USB port, the host PC USB port must support
the equivalent amount of power consumed during the overcurrent or the short circuit. Else,
the host PC USB port OCP might trigger; making STLINK-V3PWR turn OFF. Accordingly,
it is recommended to connect STLINK-V3PWR to a 5 V/3 A USB Type-C
®
port for a target
application running peak activities above STLINK-V3PWR’s operating measurement area.
7.3 Auxiliary power source output (AUX)
The auxiliary power source output is a regulated voltage source programmable from +1.6 to +3.6 V by 100 mV
step.
Note:
When STLINK-V3PWR is managed by STM32CubeMonitor-Power, the auxiliary power source output voltage is
a mirror of the SMU output voltage.
The auxiliary power source output is generated by a programmable SMPS step-down converter allowing a high
power‑efficiency conversion from the host PC USB port.
The auxiliary power source can supply a 2000 mA continuous output current with excellent load transient
response.
It has a built-in OCP. It can safely tolerate overcurrent and short circuits up to the OCP
TH_AUX
threshold (refer to
Table 13).
Warning: As STLINK-V3PWR is supplied from a host PC USB port, the host PC USB port should be
able to support the equivalent amount of power consumed on the AUX output. Else, the
host PC USB port OCP might trigger; making STLINK-V3PWR turn OFF. Accordingly, it is
recommended to connect STLINK-V3PWR to a 5 V/3 A USB Type-C
®
port.
7.4 Debugger interfaces (SWD/JTAG/VCP)
The STLINK-V3PWR debugger functionalities are detailed in this section. These functionalities are split on the
following
STLINK-V3PWR USB interfaces:
• Debug: for SWD, JTAG, and SWV protocols
• Virtual COM port (VCP): for UART protocol
• Bridge: for SPI, I
2
C, CAN, and GPIOs protocols
Level shifters are integrated with STLINK-V3PWR to adapt debug, bridge, and VCP interface voltage to target
application I/Os voltage from 1.6 to 3.6 V.
UM3097
Auxiliary power source output (AUX)
UM3097 - Rev 1
page 14/30

ST STLINK-V3PWR Specifications

General

Brand	ST
Model	STLINK-V3PWR
Category	Computer Hardware
Language	English