JAJSLK5B October 2020 – May 2022 LMG3422R050 , LMG3425R050
PRODUCTION DATA
Figure 10-2 and Figure 10-3 show the buck-boost converter efficiency versus load current with different inductors and peak current modes. A minimum inductance value of 3 µH is preferred for the buck-boost converter so that the di/dt across the inductor is not too high. This leaves enough margin for the control loop to respond. As a result, the maximum di/dt of the inductor is limited to 6 A/µs. On the other hand, large inductance also limits the transient response for stable output voltage, and it is preferred to have inductors less than 10 µH.
VDD = 12 V; | TJ = 25 °C. |
VDD = 12 V; | TJ = 25 °C. |