JAJSNJ1H May 2013 – December 2021 TPS65310A-Q1
PRODUCTION DATA
The BOOST converter requires an external R-C network for compensation (see Figure 9-10, COMP5). The components can be calculated using Equation 14 and Equation 15:
where
For example:
VIN = 3.8 V
VOUT = 5 V
L = 4.7 μH
C = 54 uF
→ FLC = 7.6 kHz
FBW = 30 kHz
→ R ≈ 8 k
→ C ≈ 2.7 nF
Stability and load step response must be verified in measurements to fine tune the values of the compensation components. Like in this case, while fine tuning, it was observed on the EVM that using 12k as the compensation resistance gave better load transient results and stability response than using 8k. The equations serve as a good starting point for calculating compensation values.