Refer to the PDF data sheet for device specific package drawings
TPS65917 is a Power management IC (PMIC) that can be used for the Device design. TI is now investigating an optimized solution for high power use cases so the TPS65917 is subject to change. An alternate dual converter power solution using LP8732Q and LP8733Q are recommended. TI requires the use of one of these PMIC solutions for the following reasons:
It is possible that some voltage domains on the device are unused in some systems. In such cases, to ensure device reliability, it is still required that the supply pins for the specific voltage domains are connected to some core power supply output.
These unused supplies though can be combined with any of the core supplies that are used (active) in the system. e.g. if IVA and GPU domains are not used, they can be combined with the CORE domain, thereby having a single power supply driving the combined CORE, IVA and GPU domains.
For the combined rail, the following relaxations do apply:
Whenever we allow for combining of rails mapped on any of the SMPSes, the PDN guidelines that are the most stringent of the rails combined should be implemented for the particular supply rail.
Table 7-4 illustrates the approved and validated power supply connections to the Device for the SMPS outputs of the TPS65917 and LP8732 combined with LP8733 PMICs.
|TPS65917||DUAL CONVERTER SOLUTION||VALID COMBINATION 1:|
|SMPS3||LP8732Q Buck0||vdds18v, vdds18v_ddr[3:1], vddshv[6:1]|
|SMPS4||LP8732Q Buck1||vdds_ddr1, vdds_ddr2, vdds_ddr3|
Table 7-5 illustrates the LP8733 and LP8732 OTP IDs required for DRA78x processor systems using different DDR memory types.
|OTP VERSION||OTP VERSION|