USB C PD UPS battery pack

Discussion in 'UDOO BOLT' started by Project SBC, Sep 4, 2020.

  1. Project SBC

    Project SBC UDOOer

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    I’ve been trying to make a usb c Pd ups for awhile now and I’ve successfully tested my first prototype. This could potentially work with a udoo bolt as well. I would suggest a 4s2p pack at least for a udoo bolt.

    Link to twitter post:
    https://twitter.com/projectsbc/status/1301820616144814080?s=21

    I’ll post a build and test video in the next few days. I’ll update this post then.
     
  2. Project SBC

    Project SBC UDOOer

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    Here’s the video

     
    waltervl likes this.
  3. waltervl

    waltervl UDOOer

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    I miss the Udoo Bolt in the video :)
     
  4. Project SBC

    Project SBC UDOOer

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    If only I had one... it is on my list of things to get in the future
     
  5. ccs_hello

    ccs_hello UDOOer

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    I do not recommend this type of design. It does not meet my minimum level of expected UPS design (several corners cut.)
     
  6. Project SBC

    Project SBC UDOOer

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    Interested, care to eleborate?
     
  7. ccs_hello

    ccs_hello UDOOer

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    (Just lightly touches the UPS subject...)

    A good/functional/reliable UPS needs detailed design spec to cover all operational scenarios.
    Starts from creating the requirements, e.g.,
    - power path rqmts: e.g., which port takes priority, simultaneous feed or not, if the device on a given port is (down, sleep, offline, detached/unavailable, brown out), need anti-backflow or not, etc. etc.
    - battery mgmt (charging control, discharge control, capacity mgmt, etc.)
    - design also needs to be based on supply source capabilities and scenarios

    Not saying all needs to be covered, but defining them and characterize them, understanding the constraints will be a good start.

    (Sorry, has no time to drill down further. The rest is left for forumers to study and exercise.)
     
  8. Project SBC

    Project SBC UDOOer

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    Thank you for the info.
    At some point I will design a UPS with a Texas instrument bq25703 or similar. At this point I am not experienced enough with pcb design, but that will likely meet the UPS requirements.
     

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