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LM10692EVM: What are the performance criteria that can be tested on this PMIC?

Jinwook Jeong
Prodigy 170 points

Part Number: LM10692EVM

Hello TI,

I am currently trying to test PMIC and would like to ask some questions.

I am trying to measure performance criteria for LM10692 and I see that I can test Voltage accuracy, efficiency, line/load regulation and transient response.

I would love to hear some more test criteria possible for LM10692EVM from TI technicians. 

Please help me out!

Thank you.

  • 0
    TI__Expert 8780 points
    Jeong,
    I have passed your request to our product group. you should hear from them soon.
  • 0
    TI__Mastermind 30260 points
    Hello, and thank you for posting your question on the e2e forum.

    Are you working on a new design or has your company used the LM10692 before on previous designs?
  • 0 in reply to Brian Berner
    Prodigy 170 points

    Thank you for your quick reply.

    Yes, someone else has done this before, but the performance criteria tested weren't enough.

    Thus, I am trying to re-do this project with more performance criteria added to our previous one.

    I am wondering if there are any additional tests possible for LM10692EVM?

    Thank you.

  • 0 in reply to Jinwook Jeong
    TI__Mastermind 30260 points
    Can you list the additional performance criteria required by your new design?

    Specifically, listing the requirements needed at the system level and requirements for each rail (6 DC-DC bucks) would be helpful.

    Ideally, all specifications listed in the Electrical Characteristics of the device datasheet can be tested on the EVM.

    For example, the Quiescent Current (IQ) Parameter can be tested by meeting the Test Conditions for each of the 4 IQ cases. IQ_OFF (paramter) = all Bucks Disabled (Test condition).
    This would be a system-level parameter that is usually measured at each IC then added together for IQ total. UVLO and OVLO would also be system-level parameters that can be tested.

    Then each BUCK (1-6) rail has its own input and output on the EVM and separate Electrical Characteristics in the datasheet. Each of the BUCK1-6 parameters can be tested independently on the EVM.

    I hope this helps, but I cannot be much more specific without knowing your performance requirements.
  • 0 in reply to Brian Berner
    Prodigy 170 points

    Thank you!

    Nothing at all was decided. I am just looking for additional performance test possible for LM10692EVM.

    As you mentioned, I will be testing all specifications listed in the electrical characteristics such as buck1-6, maximum load current, Quiescent current, efficiency, Voltage Accuracy (feedback voltage), and DC line or load regulation and transient.

    I wanted to know more parameters to be tested just like UVLO and OVLO since I could not think about these two.

    Do you think Power supply rejection ratio, Start-up time and leakage tests can/ need to be tested too?

    I will look forward to your reply.

    Thank you.

  • 0 in reply to Jinwook Jeong
    TI__Mastermind 30260 points
    For your information, the LM10692 device has recently been changed to "Obsolete" status. The EVM should also have been removed from the web and I apologize for the discrepancy. The LM10692 product folder is no longer on the web and the LM10692EVM will also be removed from the web now that we are aware of the error. You can continue to evaluate the EVM to understand the device's performance, but you will not be able to place an order for the device.

    If you are interested in evaluating other devices, please notify me of the system power requirements and we can suggest a PMIC that is the closest match for these requirements. Some popular configurable PMICs that do not require custom programming are the TPS65023 and LM26480. A similar SSD PMIC would be the LM10504.