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TL494: TL494 tests the current magnitude wave problem

Part Number: TL494

Tool/software:

Hi TI Team,

The customer encountered the following problems when using TL494 to design the laser power supply, please help to see if the adjustment loop parameters can be improved?

When the AC input is 220V, the current waveform is normal. When the AC input voltage is adjusted to 200V, the current waveform will appear as follows: