UCC28180: UCC28180

Jack Deng

Expert 1090 points

Part Number: UCC28180

Hi TI expert

The input current overshoots when the Power supply turn on， the current waveform as below：

CH1: Gate driver waveform

CH3: Inductance current waveform

Is this normal? I worry that the inductance may be saturated at the time of starting up. thx

0 David Huang33 over 5 years ago

Hi Deng,

thanks for using UCC28180.

From your waveform, I do not see the saturated risk for PFC inductor.

Can you check whether at this moment UCC28180 trigger OCP?

If OCP function can work normally, this kind of current should not have risk for MOS,

0 David Huang33 over 5 years ago in reply to David Huang33

Hi Deng,

have you check the ocp function? it is important to protect Mos using OCP function.

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