Huge currents drawn with ESP32 WROVER KIT (with attached LCD display board

[karthik277]

I'm trying current measurements on wrover kit e with display(attached schematics) for WLAN

https://dl.espressif.com/dl/schematics/ ... T_V4_1.pdf

Removed resisitor R166 connecting VDD33 to ESP_VDD33 and connected external jumper pins to measure current

Measured output current for WLAN Active state is 116mA.
Deep sleep current on the same pin is 32mA
UDP TX = 180mA
UDP RX = 40mA
Even with Power save mode configurations I'm observing 32mA current drawn at the module input.
Tried the same tests on two different boards
Please let me know if these currents are genuine or there's any setup requirements to measure current

[karthik277]

Any comments?

[WiFive]

What are you using to measure the current and do you have graphs?

[ESP_igrr]

Hi karthik277,

The numbers look about right, comparing them to "5.5 RF Power­Consumption Specifications" section of ESP32 datasheet.

Even with Power save mode configurations I'm observing 32mA current drawn at the module input.

Are you referring to modem sleep (esp_wifi_set_ps function)?

There are another two features which allow reducing current consumption further: dynamic frequency scaling and automatic light sleep. These features are controlled by the power management API: https://docs.espressif.com/projects/esp ... ement.html.

I suggest trying the 'power_save' example in ESP-IDF, it enables both features for lower power consumption: https://github.com/espressif/esp-idf/tr ... nt-enabled.