ESP32 Forum

Hi all,

I am checking the power consumption of the ESP32-S2-MINI-1.
https://www.espressif.com/sites/default ... eet_en.pdf
Table 8, Section 4.4 "Current Consumption Characteristics" shows
Normal speed: 80 MHz - Current consumption (Typ) : 14 mA


When measuring, it turned out that the values ​​differ from those indicated in the documentation.

My measurements showed a value of 21.8 mA, expected value 14 mA

ESP-IDF release-v4.2

Measurement program:
/////////////////////////////////////////////
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "sdkconfig.h"

void app_main(void)
{
while(1)
{
vTaskDelay(10);
}
}
/////////////////////////////////////////////


sdkconfig:
/////////////////////////////////////////////
# Power Management
#
# CONFIG_PM_ENABLE is not set
# end of Power Management

# ESP32S2-specific
#
CONFIG_ESP32S2_DEFAULT_CPU_FREQ_80=y
# CONFIG_ESP32S2_DEFAULT_CPU_FREQ_160 is not set
# CONFIG_ESP32S2_DEFAULT_CPU_FREQ_240 is not set
CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ=80
//////////////////////////////////////////////


Under what conditions were the measurements taken in the documentation?
How to achieve power consumption at Normal speed: 80 MHz - 14 mA?

Hi Rasl_RF,

Please use the example in https://github.com/espressif/esp-idf/tr ... power_save.
As for DTIM see e.g. https://lastminuteengineers.com/esp32-s ... nsumption/ (this article if for ESP32 but the concept applies for ESP32-S2).

ESP_krzychb wrote: ↑

Fri Aug 20, 2021 2:49 am

Hi Rasl_RF,

Please use the example in https://github.com/espressif/esp-idf/tr ... power_save.
As for DTIM see e.g. https://lastminuteengineers.com/esp32-s ... nsumption/ (this article if for ESP32 but the concept applies for ESP32-S2).

Hi ESP_krzychb.

Please note that in my example I am not using Wi-Fi and I am not using power management.

Table 8: Current Consumption Depending on Work Modes indicates Normal speed: 80 MHz. Power consumption: 14 mA.

The documentation does not specify the use of Light-sleep and Power Management

The issue of Power Consumption remains relevant.