H264 power consumption setup

This article describes the setup used to measure the power consumption of H.264 encode use cases.

These measurements have been done using STM32N6570-DK (version C01) and STLINK-V3PWR.

1. Using external SMPS

1.1. Board rework

Current injection using I_SENS_EXT before the external SMPS (3.3 V)

Remove R23, R24, and C27.

Center


Note: The efficiency of the SMPS must be considered when measuring power.

For instance: TPS62088: Efficiency is approximately 85% (for DK version C01)

1.2. STLINK-V3PWR connection

VIDEO PowerConnect ExternalSMPS.png