JAJSLY4 データシート | TI.com

JAJSLY4B January 2023 – May 2024 TPS62870 , TPS62871 , TPS62872 , TPS62873

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10.2.2.3 Selecting the Compensation Resistor

Use Equation 11 to calculate the recommended value of compensation resistor, R_Z:

Equation 11.

R_{Z} = \frac{1}{g_{m}} (\frac{π \times (∆ I_{O U T} + \frac{I_{L (P P)}}{2}) \times \frac{L}{Nɸ}}{4 \times τ \times ∆ V_{O U T}} - 1) (1 + \sqrt{{T O L}_{I N D}^{2} + {T O L}_{τ}^{2}})

Equation 12.

R_{Z} = \frac{1}{1.5 \times 10^{- 3}} (\frac{π \times (7.5 + \frac{2.342}{2}) \times \frac{110 \times 10^{- 9}}{1}}{4 \times 12.5 \times 10^{- 6} \times 17.25 \times 10^{- 3}} - 1) (1 + \sqrt{{20 %}^{2} + {30 %}^{2}}) = 2.244 k Ω

Rounding up, the closest standard value from the E24 series is 2.4kΩ.