MCU power logger spans nanoamps to milliamps

-November 12, 2017

The STM32 Power Shield expansion board from STMicroelectronics lets developers check the power consumption of their embedded designs. Leveraging an STM32L496VGT6 microcontroller, the STM32 Power Shield (X-NUCLEO-LPM01A) dynamically monitors current from 100 nA to 50 mA under various operation conditions.

The Power Shield expansion board serves as a 1.8 V to 3.3 V programmable power-supply source and is compatible with STM32 Nucleo development boards. It has a built-in display that allows current to be read directly without the need for a multimeter. Further, the board operates in either standalone mode or in controlled mode connected to host PC via a USB interface.

When used with EEMBC (Embedded Microprocessor Benchmark Consortium) IoT Connect and/or ULPMark (Energy Monitor V2.0) benchmarking frameworks, the STM32 Power Shield offers an extended GUI for direct benchmark measurements and energy display. The Power Shield’s measurement range is well-suited for testing small devices that must meet stringent power limits, such as IoT endpoints.

The STM32 Power Shield comes with a companion graphical PC application, the STM32CubeMonitor-Power (STM32CUBEMON-PWR), which enables the board to provide detailed information that would otherwise require an oscilloscope or other test gear.

The STM32 Power Shield expansion board costs $70.

STM32 Power Shield product page

STMicroelectronics, www.st.com

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