Part Number:LM73605
Hi;
We are developing a DC-DC circuit which turn a 12V input to 5V output with out current below 5A. We choose TI LM73605 ,the circuit is posted. As pointed out in the datasheet, if we let RT pin floating, the switching frequency will be 500 KHz. But actually, we got a strange switching waveform as the figure below. We are confuzed. Please help us.
Donald.
