Other Parts Discussed in Thread: LM5155
Hi team,
Pls look at the schematic:12V input,output configuration is 70V,and the load consumption current is 140mA.
I want to improve the efficiency of the system, so I change the R135 resistance value to 48.7K. Other conditions remain unchanged, but the total current of the system has a loop jump. I guess it is because the output current of this part of the power supply is not enough. It is assumed that the smaller the fsw is, the larger the output current should be under the condition that other conditions remain unchanged. However, the opposite result appears.