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UCC39002: UCC39002 + PMP5236 - Power supply unstable at low load

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Part Number:UCC39002

My customer is working a dual POE power supply based on UCC39002 and PMP5236.

So far , the problem is that the power supply oscillates between 2 power rails at light load and stops oscillating when the load goes up to 120mA.

Once the oscillating stopped, the circuit can work on a 30mA load with current balancing.

Could you help solve this issue?


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