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Old 04-04-2015, 05:25 AM   #1
keets
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Join Date: Apr 2015
City & State: mumbai
My Country: india
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Posts: 3
Default 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.
Attached Files
File Type: pdf iris_schematic.pdf (253.8 KB, 41 views)
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