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DCP010505DB: help check if the below SCH can work normally

Hope Chen
Expert 1030 points
Part Number: DCP010505DB
Other Parts Discussed in Thread: LMZM23601

hi Mr,

     Would you help check if the below SCH can work normally？Our design needs the output is 10V，so we set the -Vout is GND,but the Vout is abnormal

     Could you help give any advice for the application

Thanks a lot

  • 0
    TI__Guru 50120 points

    Hi Hope,

    Because this is an unregulated DC/DC the positive and negative output might vary a bit depending on the load. Your connection looks correct in that you are using the negative output voltage as the reference so the expected output voltage should be (5 - (-5)) = 10V.  Is there a reason why you need to use the DCP010505DB? If you are interested in one of the newly released devices this year that has a small solution size, you might want to take a look into the LMZM23601.

    Regards,
    Jimmy

  • 0 in reply to Jimmy Hua
    Expert 1030 points
    Appreciate for your response.Unfortunately, The can't work normally
    Customer'design needs the isolated output
  • 0 in reply to Hope Chen
    TI__Guru 50120 points

    Hi Hope,

    What is the tolerance for the +10V output? Looking at Figure 7 Load Regulation, the output voltage can drift from 5.7V(10% load) to 4.77(full load). If a tight tolerance is required, having post-regulation to get 10V might be necessary by using either an LDO or switching regulator.

    Regards,

    Jimmy