Hi TI support,
I recently noticed some strange pulse waveforms at SW node of TPS54340B-Q1 at 50mA load. Design is developed for 5V/1.5A. It shows some sinusoidal content along with pulse switching. While at 0.7A or 1.5A load it shows good pulse waveforms (no sinusoidal content) corresponding to designed switching frequency. I have attached both normal & DCM waveforms. Kindly check & advise if DCM pulses at SW node are OK or there is something in design.
Thanks,
jagdish
Waveform with 50mA load current, Input is 12VDC Waveform with 0.7A load current. Input is 12VDC