Hello Guys,
Good day.
In our customers design using LM5145, the input is 28V, output is 5V 10A and the switching frequency set to 130KHz.
But, when he check the switching frequency using oscilloscope under no load and full load, he found that the witching frequency of the LM5145 drops to 68kHz after turning on the step down converter about 5 minutes. This state can only be reset by completely resetting the converter (turn off power longer than 5 seconds).
He wanted to know if this problem is it related to bode plot?
Thanks in advance!
Art
