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TPS68470 WLED enable

Hi,

Customer needs a simple way in production line to light up the LED connected at WLED2.  (WLED1 is not used)

I propose the procedure as below, please let me know if there's anything missing/incorrect.  Thanks!

  • Set WLED2 current to the value you need in ILED[4..0] of WLEDC2 register

  • Set MODE[1:0]=”01” for Torch mode in WLEDCTL register

  • Set MAX_CUR[2:0] in WLEDMAXT register for the max current you need for Torch mode.

  • Set DISLED1 to ‘1’ in WLEDCTL register

  • Set EN bit to ‘1’ in WLEDCTL register

Antony

  • HI Antony,

    Yes, that should work.

    fyi, here is the write commands that are done on the EVM during its board production to prove the wLEDs are soldered down right:
    Register / data written
    x2B / x0F
    x31 / x05
    x2B / x0F
    x2D / x01
    x34 / x1F
    x35 / x1F
    x36 / x01
    x36 / x05