STMicro STLINK-V3PWR debugging & programming probe supports power measurement

STMicro STLINK-V3PWR is a new in-circuit debugging and programming probe made for STM32 microcontrollers and that is said to provide accurate power measurement.

The probe is especially useful for battery power IoT and wireless applications and is able to measure current values from nanoamps up to ~500mA with up to ±0.5% accuracy. The STLINK-V3PWR can also power the target over a single USB cable up to 2A.


STMicro STLINK-V3PWR key features and specifications:

  • 1‑Quadrant source measurement unit:
    • Programmable voltage source from 1.6 to 3.6 V
    • Output current rating 500 mA with over-current protection (OCP) at 550 mA
    • Programmable sampling rate from 1 SPS to 100 kSPS
    • Dynamic measurement
      • 100 nA to 550 mA current
      • 160 nW to 1.65 W power measurements
      • 50 kHz bandwidth
      • 1.6 MHz acquisition / 2% accuracy
      • Compatible with EEMBC ULPMark tests
  • Auxiliary output voltage source from 1.6 to 3.6 V under up to 2 A (no current measurement, OCP at 2.5 A)
  • Debugging of embedded applications
    • JTAG / Serial Wire Debug (SWD)
      • SWD (Serial Wire Debug) and SWV (Serial Wire Viewer) communication support up to 10 MHz
      • JTAG communication support up to 20 MHz
    • UART interface on Virtual COM port (VCP) with frequency up to 12 MHz
    • Multi-path bridge USB to SPI, I2C, CAN, GPIOs
    • Integrated level shifter I/O voltage 1.6 to 3.6V adaptable
  • 4x bi-color LEDs providing probe state
  • 3x STDC14 to MIPI10 / STDC14 / MIPI20 flat cables with 1.27 mm pitch connectors
  • 4x cables (two male/male and two male/female)
  • USB – USB 2.0 Type-C connector up to 5V/3A for power, host interface, firmware update
STM32CubeMonitor-Power screenshot

The STLINK-V3PWR is supported by STM32CubeMonitor-Power graphical tool used to visualize power consumption in real-time and analyze the effects of design changes to improve energy efficiency and extend battery life. The debugger is also supported by the Arm Keil development tool and IAR integrated development environment (IDE) which support both debugging and power consumption measurements.

STMicro says the STLINK-V3PWR complements the STM32 Power shield (X-NUCLEO-LPM01A) programmable power supply source that provides current measurement from 100nA to 50mA and the energy meter of the STM32L562E-DK Discovery kit which can measure current from 300nA to 150mA and both of which are also compatible with the STM32CubeMonitor-Power software.


The STLINK-V3PWR probe provides an alternative to power measurement tools such as Nordic Semi Power Profiler Kit II or the more advanced Qoitech Otii Arc developer tool. The STMicro probe has the advantage of also including an SWD/JTAG debugger, but the current measurement range is somewhat narrower than the other two tools which respectively support 200nA to 1A and ~0nA to 5A.

The press release says the STLINK-V3PWR can be now purchased for $93.10 on ST eSTore, but if I go there I’m greeted by a “Coming soon” message. Further information and documentation can be found on the product page.

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David Willmore
David Willmore
1 year ago

FWIW, ‘single quadrant’ means it can only source current for positive voltages. It cannot supply negative voltages and it cannot sink current from the target.

1 year ago

If you draw sink current from board input, which you probably will, then it should be visible in the measurements

1 year ago

Shame that it does not contain simple power analysis (SPA), differential power analysis (DPA), and correlational power analysis (CPA) + voltage glitcher ready-to-use firmware.

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