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DLP4500: Interfacing FPGA with DLP4500 DMD Chip.

Pang
Expert 2415 points
Part Number: DLP4500
Other Parts Discussed in Thread: DLPC6401

Dear Ti,

Can you help to share the application notes or any reference design for the FPGA to be directly interface with the DLP4500 DMD Chip?

  • 0
    TI__Expert 4610 points
    Hello Electrobud,

    Unfortunately FPGA can not be directly interface to DMD. We have class of different controllers which interface to the DMD, DLPC6401 controller drive the DLP4500. If you can share more about your specific requirement then we can help you to find the specific controller for your application.

    Thanks,
    Navneet
  • 0 in reply to Navneet Singh
    Expert 2415 points
    Hi Navneet,

    May I know why it cannot be directly interface to DMD as the DLPC6401 controller has an overkill specs. What we wanted to do is a simple projector. We are using the external flash to store images which acquired from PC through USB port, FPGA will be retrieving from memory and project it via DLP4500.

    Thank you.
  • 0 in reply to Pang
    TI__Expert 4610 points
    Hello Electrobud,

    DLP controller has several blocks and it does the processing of image for how and when to display the image on DMD.
    it is not just retrieving the data from memory and project on the DMD. Their is so many things comes in between how to display the data (data processing ), when to display the data( Time and data relation).

    I know it is difficult to understand these dependency , but yes we need a controller for DMD's.

    Thanks,
    Navneet
  • 0 in reply to Navneet Singh
    Expert 2415 points
    Hi Navneet,

    Can I conclude that the FPGA can does the work? Or what is your recommendation? Because we need a low cost solution.
  • 0 in reply to Pang
    TI__Mastermind 30875 points

    Hi Electrobud,

    The RGB 24-bit data formatting before loading on the DMD (DLP4500) and illumination synchronization design information is not available in the public domain. Therefore it is recommended to use the recommended controller DLPC6401 or DLC350 depending upon the application. Using with controller guaranty proper working of the DMD chip. 

    Regards,

    Sanjeev

  • 0 in reply to Sanjeev
    TI__Mastermind 30875 points

    Hi Electrobud,

    Let us know if you are having any other clarification; as mentioned about DLPC6401-DLP4500 interface control and data transfer is IP so it is not possible to share the information.

    Regards,

    Sanjeev

  • 0 in reply to Sanjeev
    Expert 2415 points
    Hi Sanjeev,

    Noticed that the datasheet stated major difference is on the package between DLP4500FQD and DLP4500FQE. May I know what are the other differences which makes the price difference between these 2 parts?
  • 0 in reply to Pang
    TI__Mastermind 30875 points

    Hi Electrobud,

    Electrically both parts are same. The price difference coming because one package can handle more power than the other. So basically you can drive more light in and get more light out of it.

    Regards,

    SAnjeev

  • 0 in reply to Sanjeev
    Expert 2415 points
    Hi Sanjeev,

    May I know which one can handles more power?
  • 0 in reply to Pang
    TI__Mastermind 30875 points

    Hi Electrobud,

    DLP4500FQD 

    Regards,
    Sanjeev

  • 0 in reply to Sanjeev
    Prodigy 80 points

    Hi

    May I know what do you mean when you are talking about more power?

    since it is mirror and we don't need much power to move the mirror.

  • 0 in reply to Morteza Ozlati
    TI__Mastermind 30875 points

    Hi,

    The power i am referring is wrt input light in lumens; one can handle more lumens than the other. This is basically coming from the different packaging of the DMD. Are you by any chance referring to the input power in terms of current/voltage? If so then there is no difference both are electrically same, both consume same power.

    Regards,

    Sanjeev 

  • 0 in reply to Sanjeev
    Prodigy 80 points
    Thank you .
    But since the light source is separate from the DLP4500 and it is supposed to reflect the light, what difference between for example DLP4500FQD and DLP4500FQE in term of the power when both of them have same number of micromirror and input voltage/current
    currently I have DLP4500 eva board and study about it,
  • 0 in reply to Morteza Ozlati
    TI__Mastermind 30875 points
    DLP4500 DMD micromirror array fill factor is 92% (nominal) please refer to datasheet; the portion of the light that is not hitting the micromirror will hit to the substrate underneath, this will be getting converted into heat. So FQD package has place for connecting heat sink for cooling so you can input more light to it.

    FQE package (Series-241) drawing. See DLP® Series-241 DMD and System Mounting Concepts for more information. www.ti.com/.../DLPA034
    FQD package (Series-310) drawing. See DLP® Series-310 DMD and System Mounting Concepts for more information. www.ti.com/.../DLPA041

    In your application if you are not caring about light intensity, you can use lower FQE package model.

    Regards,
    SAnjeev