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TS12A12511: Strange behavior

Part Number: TS12A12511

I use TS12A12511 to modulate the voltage that sets the current (-2.5V - +2.5V).
At the moment on NC and NO I have 0V.

I noticed that my MCU was very warm.
Seems I have -5V on my input IN.
At the moment the open drain is on the MCU and there is no PWM.

  • Hello,

    My understanding is that IN's voltage becomes -5V for some reason and IN is driven by a microcontroller.

    I suspect there is a short circuit between your -5V rail to IN pin. I would take out TS12A12511 and see if this -5V still exists on CHANNEL1_PWM.

    Fan Wang

  • In reply to Fan.Wang:

    User4646208,

    We haven't heard from you in a while. Has Fan answered your question? Do you have a resolution to this issue?

    Thank you,
    Adam
  • In reply to Adam Torma:

    Hello.
    Yes, the problem was in short circuit on the MCU

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