An example power map using LP87334D to power the AM243x (ALV Package) processor with LPDDR4 memory support is shown in Figure 5-7, and with DDR4 memory support in Figure 5-8. The AM243x (ALV Package) body size is 17.2 mm × 17.2 mm, which has a benefit of pin-to-pin compatibility with the AM64x.
For applications using LPDDR4 memory, TPS62822 powers VDDS_DDR of the AM64x and VDD2 of the LPDDR4. TPS62822 is enabled by LP87334D GPO2, and can be substituted with TPSM82822, a module with a step-down converter with an integrated inductor. The memory's VDD1 is powered by LDO0 of the LP87334D.
For applications using DDR4 memory, TPS62822 (TPSM82822) powers VDDS_DDR of the AM64x and VDD of the DDR4. A discrete LDO TPS745 is enabled by LDO0 to supply the DDR4 VPP rail.