Design of DC-DC chip FB divider resistor circuit
Time:2024-04-07
Views:183
In the use of DCDC chip circuit design will encounter the problem of calculating the partial voltage resistance, the following is a brief introduction to how to calculate
The output voltage of the following circuit is Vout=1.8V
Query the VFB voltage of the chip
VFB voltage VFB=0.5V is found on the datasheet
The calculation formula is as follows
R1 usually uses adjustable resistors, 50K or 200K, etc. After R1 selects the value, R2 is calculated as follows:
The output voltage of the following circuit is Vout=1.8V
The calculation formula is as follows
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