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DLPDLCR3010EVM-G2: Max Output Current with 12-V DC power supply

Hiroyuki Oka
Intellectual 255 points
Part Number: DLPDLCR3010EVM-G2

In "DLP® LightCrafter™ Display 3010 EVM Gen2 User's Guide" (page 5, 6), a 12-V DC power supply can be used as an external supply to the J9 connector.

But there is no description about max output current when operating the evm with an external 12-V DC power supply

(Otherwise, there is description about max output current when using 19-V DC, 4.74A). 

Please let me know about it.

  • 0
    TI__Intellectual 1825 points

    Hello, 

    Thank you very much for your post and interest in the DLPDLCR3010EVM-G2!

    I recommend using a supply that can output atleast 7.5A. I got this figure by calculating the output power of the 19V supply (19V*4.75A = 90.25W) and then finding the current for the 12V supply you plan on using.

    Thanks, 

    Brandon

  • 0
    TI__Mastermind 20045 points

    Hello,

    Using the maximum input power at 19V of 90.06W (19V * 4.74A) you can figure out he maximum input current at 12V (90.06W / 12V) of 7.51A. 

    This input current may not be the exact maximum as some of the assumed efficiencies may differ at 12V versus 19V; however, it should be a fairly accurate starting point.

    Thanks,
    Kyle