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  • TI Thinks Resolved

DLPDLCR3310EVM: DLPDLCR3310EVM Power Switch

Intellectual 2895 points

Replies: 3

Views: 48

Part Number: DLPDLCR3310EVM

Hi Team, we would like to confirm if there is a method that this device can be switch off remotely withing the physical switch.

Thank you in advance.

Regards,

-Mark

  • Mark,

    The system's power state is regulated by PROJ_ON, which in this case is implemented in the physical switch on the system. Although it exists as GPIO08 within the controller, it cannot be redefined via I2C unfortunately. It must be driven via hardware.

    It is possible to disable specific system functions (such as parking the DMD) but turning the entire system off without driving PROJ_ON may not be possible. What are you trying to achieve? Is your goal possible by disabling specific system components?

    Regards,

    Philippe Dollo

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  • In reply to Philippe Dollo:

    Hi Philippe, the plan is to box the device and submerge it. What is your possible recommendation for this type of application?

    Thank you for supporting the inquiry.

    Regards,

    Mark

  • In reply to Mark Philip Felipe:

    Hi Mark,

    Powering the device remotely will not be possible with the physical switch in the DLPDLCR3310EVM.

    To control system power remotely, you may consider hardware changes. It could be possible to replace SW1 and SW2 with relays or transistors driven by a blue tooth or WiFi device. These remote controlled relays or transistors could potentially be placed in parallel to SW1 and SW2 if you wish to keep SW1 and SW2 controls as well.

    Keep in mind that the device will still be powered as long as the 19V supply is in place. A  similar solution could be implemented to cut or connect the power supply at the "POWER IN" port.

    The schematic for the 3310 EVM can be downloaded here: https://www.ti.com/tool/TIDA-080000.

    Please let us know if you have any further question.

    Regards,

    Austin

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