Tool/software:
I have configured a 41.1kΩ resistor with about 5 chip resistors(33kΩ+4.7kΩ+3.3kΩ+100Ω+100Ω) for the feedback pin, and connected it to the feedback pin by dividing the voltage with a 100kΩ resistor. Is there a disadvantage to this circuit configuration, such as the fact that noise is easily picked up by the feedback pin? (Or is there a suggestion that such a design should not be used?)
【Background to the question】
There is a requirement to reduce the kind of components used by designing the circuit using only E24 series resistors. In order to meet this constraint, we ended up with a configuration with about 6 resistors connected to the Feedback pin that determines the output voltage, and we had to match the values. We were concerned about the resistance to external noise due to the increased number of chip resistors and the resulting longer wiring lengths. (I remember that this was pointed out to me when I was designing a DC-DC converter before, but my memory of that time is a bit hazy.
