TPS543x feedback resistor calculator
Texas Instruments TPS5430, TPS5431
Select the ideal feedback resistors for your DC converter circuit. This tool helps you adjust the output voltage of a TPS543x DC/DC converter. Experiment with combinations of up to three resistors, enhancing precision in voltage regulation.
Datasheet note:
8.2.1.2.4 Output Voltage Set-Point The output voltage of the TPS5430 is set by a resistor divider ( R1 and R2 ) from the output to the VSENSE pin. Calculate the R2 resistor value for the output voltage of 5 V using Equation 12:
R2 = ( R1 x 1.221 ) / ( Vout - 1.221 )
For any TPS5430 design, start with an R1 value of 10 kΩ. R2 is then 3.24 kΩ.
| DC/DC Converter: | TPS543x |
| Texas Instruments TPS5430, TPS5431 | |
| Step-down 3A Adjustable | |
| Input Range: | 5.50V - 36.00V |
| Output Range: | 1.22V - 31.32V |
| Manufacturer Part # | TPS5430DDAR |
| Manufacturer | Texas Instruments |
| Formula Vout = | R1 * 1.221 / R2 + 1.221 |
| Recommended R1 | 10000 |