current consumption in deep sleep mode of esp32-wroom-32 .

[nirvik]

hi,
our device esp32-wroom-32d is consuming around 300uA current in deep-sleep mode with the accelerometer sensor attached(iis3dwb) with it. We have separately powered down the iis3dwb sensor and ULP-coprocessor, still result remain same. We are using SPI communication for the sensor. How we can decrease the current consumption ?? (up to 30uA is acceptable ).

[chegewara]

Custom board schematics could help us.
Did you turn off wifi and/or ble before deep sleep? Did you turn off power domains before deep sleep?

[bidrohini]

Is your board a custom-made one? If yes, you can post your design here: https://www.pcbway.com/project/questionpublish
Many PCB experts visit this forum. Hopefully, some of them will be generous to figure out if there is any fault in the design that is causing higher current consumption.

[nirvik]

the problem was solved by pulling up the SPI MISO,MOSI AND CLK pins by an external pullup. Sorry for late response.