Skip to main content
yang zhichao
yang zhichao
Associate
March 23, 2018
Question

STM32F103R8T6 - power consumption 5x higher than product parameters

  • March 23, 2018
  • 4 replies
  • 937 views
Posted on March 23, 2018 at 09:54

The difference between the product parameters and the sample power consumption of batch production is too great. It is found that the power consumption of the single chip is five times. How should I judge the STM32F103R8T6 I bought is real or fack?

    This topic has been closed for replies.

    4 replies

    yang zhichao
    yang zhichaoAuthor
    Associate
    March 23, 2018
    Posted on March 23, 2018 at 09:56

    my email is

    mailto:myyzc@163.com

    Andrew Neil
    Andrew Neil
    Super User
    March 23, 2018
    Posted on March 23, 2018 at 11:09

     ,

     ,

    http://www.catb.org/~esr/faqs/smart-questions.html ♯ noprivate

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    AvaTar
    AvaTar
    Senior III
    March 23, 2018
    Posted on March 23, 2018 at 10:30

    The difference between the product parameters and the sample power consumption of batch production is too great. It is found that the power consumption of the single chip is five times.

    You should be a bit more specific.

    A custom board you designed ?

    Perhaps you damaged it, or operate it out of specs ?

    What are the actual and expected power consumptions (mA at which Vcc and which clock frequency) ?

    Andrew Neil
    Andrew Neil
    Super User
    March 23, 2018
    Posted on March 23, 2018 at 11:13

    The difference between the product parameters and the sample power consumption of batch production is too great.

    What 'product parameters' are you referring to?

    Power consumption is very much dependent on the application - so are you sure that your application is running under exactly the same conditions?

    Are you sure you are measuring just the microcontroller current - not also other parts of your system?

    If this is a custom PCB, do you get similar results on an ST board (Nucleo, Discovery, whatever) ?

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    Nesrine M_O
    Nesrine M_O
    Associate
    March 23, 2018
    Posted on March 23, 2018 at 11:34

    Hi

    myyzc

    ,

    Could you please provide more explanation on your case, so that it will be easier to understand the issue?

    1- Which power mode did you measured (voltage,frequency ,test parameters)?

    2-What do you mean by '

    product parameters '?

    3-Please refer to the product

    http://www.st.com/content/ccc/resource/technical/document/datasheet/33/d4/6f/1d/df/0b/4c/6d/CD001615pdf/files/CD001615pdf/jcr:content/translations/en.CD001615pdf

    and tel us about the exact power mode that you are looked to?

    4-Are you using a custom board?

    -Nesrine-

    Terms & ConditionsAccessibility statement