As part of my homework and class project for the Making Embedded Systems class, here are some of my notes on measuring the power consumption of my B-L475E-IOT01A Discovery Board.

I still have a $100 coupon for the class to give away! It is only good until Feb 14th, so send me a DM on Twitter or email via gmail (gojimmypi) if you want it!

The Nordic Power Profile Kit works in one of two modes: either Measuring current in Source Meter mode or Measuring current in Ampere Meter mode. I’m using it in source mode to power the isolated side of the Analog Devices EVAL-ADUM4160 USB Development Board.

The Upstream Power Jumper Settings for the USB Isolation board to be powered from USB:

USB_isolator_upstream_power_jumper_settings.png

The Downstream Power Jumper Settings do NOT have the ADuM5000 power isolation chip installed, and instead gets external power via J3 Power Profiler Vout and GND as shown on page 3 of the UG-043 EVAL-ADuM4160EBZ User Guide:

USB_isolator_downstream_power_jumper_settings.png

PPK3_power_analysis.png

If you are interested in power analysis, there’s also this Otii Arc to consider.

The first power profile for my app running on the board is shown here:

power_profiler_app_for_B-L475E-IOT01A.png

nRF Connect for Desktop

download

Power Profiler Kit v1.1.0 User Guide

More notes in progress…