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Evgeny Erlihman
Evgeny Erlihman
Associate III
October 17, 2017
Solved

power consumption calculator for stm32h7

  • October 17, 2017
  • 1 reply
  • 2184 views
Posted on October 17, 2017 at 22:27

Hello,

I am trying to estimate power consumption on the stm32h7. The use case i am interested in is sampling 6 channels using ADC3 and transferring the sampled data to memory using BDMA, all this while D1 and D2 domains are in stop mode and only D3 is working. The thing is that i am not able to configure the D1&D2 to stop modes.

  1. If i set the power mode to RUN, then D1 has only two options - DRUN/CRUN and DRUN/CSLEEP, in which case D2 only has DRUN. 
  2. If i set the power mode to STOP, then D1 has DSTOP/DSTANDBY, D2 has 

    DSTOP/DSTANDBY and D3 only has DSTOP.

The power consumption in the first case looks too high to me - 17mA. And off course in the second case D3 is in DSTOP, so it is not what i want.

I am doing something wrong with the configurations, or is it because STM32CubeMX Version 4.22.1 does not support this work mode in power consumption calculator?

Thanks,

Evgeny

#stme32-cube #stm32h7 #low-power-stop-mode #power-consumption #cube-mx-power-calculator-tab #stm32h743 #low-power
This topic has been closed for replies.
Best answer by Amel NASRI
Posted on October 18, 2017 at 15:20

Hi

evgeny.erlihman

‌,

You have to select 'BAM' as 'power mode. In this cou can select the suitable ase, D3 will be in DRUN mode and you can select the suitable low power mode (DSTANDBY or DSTOP) for both D1 and D2.

-Amel

1 reply

Amel NASRI
Amel NASRIAnswer
Technical Moderator
October 18, 2017
Posted on October 18, 2017 at 15:20

Hi

evgeny.erlihman

‌,

You have to select 'BAM' as 'power mode. In this cou can select the suitable ase, D3 will be in DRUN mode and you can select the suitable low power mode (DSTANDBY or DSTOP) for both D1 and D2.

-Amel

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Evgeny Erlihman
Evgeny ErlihmanAuthor
Associate III
October 18, 2017
Posted on October 18, 2017 at 15:26

Hi Amel,

When i select BAM and choose DSTANDBY for D1/D2, i do get the D3 in DRUN. But the peripheral list is empty, and the power consumption is 6.5mA. It states that this consumption is without peripherals, isn't it a bit high?

Thanks,

Evgeny

Bino
Bino
ST Employee
November 2, 2017
Posted on November 02, 2017 at 16:46

Consumption of 6.5 mA is coming from D3 in DRUN mode (this is without peripherals correct) and the value is like in datasheet 'Typical current consumption batch acquisition mode' table.

/EA

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