Part Number:TPS23753A
We use the TPS23753AEVM-004 as a reference for our own implementation of the TPS23753A POE power supply. We've updated the evaluation kit succesfully to 12V output. However when we implement the schematics in our design the output voltage is unstable.
The schematic
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Scope iimage 1:
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CH1: TP19 - GATE
CH2: TP14 - VC
Scope iimage 2:
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Same measuremtns as scope image 1 but this direct after powering up.
Scope iimage 3:
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CH1: Output voltage.
These measurements are taken with no load (just the LED D9). When loading with 330ohm the problem gets only worse.
Tim
