Tps51120

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  • keets
    New Member
    • Apr 2015
    • 4
    • india
    #1

    Tps51120

    Dear sir,
    This is my first post on the forum.
    I am a using the above part in my design of mother board for colibri V51 module.
    The design is based on the colibri_arm_iris _carrier bord v1.1. The schematic is attached.
    When apply 24v or 5v at Vin to the circuit. TPS51120 gets warm after some time.
    Also I get 3.3 v at VREG3 pin but only 1.34v at VREG5 pin. Also 0.3 volts at VREF2.
    Also no output at Pin 26 and 15.
    Since I am using this part for the first time , please suggest the test procedure/possible cause for the problem.

    Thanks in advance.
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