SLDS187A October 2018 – December 2019 TPS65216
The inductor value affects its peak to peak ripple current, the PWM to PFM transition point, the output voltage ripple, and the efficiency. The selected inductor must be rated for its DC resistance and saturation current. The inductor ripple current (∆L) decreases with higher inductance and increases with higher VIN or VOUT. Equation 1 calculates the maximum inductor current ripple under static load conditions. The saturation current of the inductor should be rated higher than the maximum inductor current as calculated with Equation 2. This is recommended as during heavy load transient the inductor current will rise above the calculated value.
The following inductors have been used with the TPS65216 (see Table 6-2).
|PART NUMBER||VALUE||SIZE (mm) [L × W × H]||MANUFACTURER|
|INDUCTORS FOR DCDC1, DCDC2, DCDC3, DCDC4|
|SPM3012T-1R5M||1.5 µH, 2.8 A, 77 mΩ||3.2 × 3.0 × 1.2||TDK|
|IHLP1212BZER1R5M11||1.5 µH, 4.0 A, 28.5 mΩ||3.6 × 3.0 × 2.0||Vishay|