SLDA059 February 2022 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442 , LP8733 , TPS65218 , TPS6521815 , TPS6521855
Table 4-1 details a selection guide for powering the AM64x or AM243x. The PMIC solution choice will depend on the desired power configuration, memory support, and peripherals support such as Ethernet PHY. The recommended discrete regulators to implement these supports are also listed. The next section provides example power maps for each PMIC solution, and also highlights additional design considerations such as solution size and cost.
| AM64x Single-PMIC Solution | AM64x Dual-PMIC Solution | AM243x (ALX Package) PMIC Solution | AM243x (ALV Package) PMIC Solution | ||
|---|---|---|---|---|---|
| PMIC | LP873364[3] | LP873364 + TPS6521855[4] | LP87334D[5] | ||
| Memory Support | LPDDR4 or DDR4 | LPDDR4 or DDR4 | No | No | LPDDR4 or DDR4 |
| Recommended Discrete Regulators | TPS745, TPS62822 | TPS745 | No | TPS62822 or TPS745 (for 1.1 V or 2.5 V Ethernet PHY support) | TPS62822, TPS745 |
| PMIC Package Size | 5 mm x 5 mm | 5 mm x 5 mm + 6 mm x 6 mm | 5 mm x 5 mm | 5 mm x 5 mm | 5 mm x 5 mm |
| Example Power Map | Figure 5-1 (with LPDDR4) Figure 5-2 (with DDR4) | Figure 5-3 (with LPDDR4) Figure 5-4(with DDR4) | Figure 5-5 | Figure 5-6 | Figure 5-7 (with LPDDR4) Figure 5-8(With DDR4) |
| Available TI design resources | LP87334D Technical Reference Manual | LP87334D Technical Reference Manual | LP87334D Technical Reference Manual | ||
[3] LP87334D is a viable alternate power solution if choosing to power VDD_CORE with under 0.85 V.
[4] The DIY PMIC TPS6521815 comes with all rails disabled, which is beneficial for allowing placement of the PMIC in the system without damaging the SoC during power up. The TPS6521815 can then be programed to the TPS6521855 register settings.
[5] The DIY PMIC TPS6521815 can be used in place of LP87334D to fully customize the power solution, however it may provide more regulators than needed for the processor.