Power & Memory Interface Solutions for DDR Texas Instruments Power and Memory Interface Solutions provide efficient, high density, cost effective solutions for designs using DDR memory. These TI devices provide the essential resources for mobile or embedded computing applications using DDR, DDR4, or any variation in-between. TPS51116 provides a complete power supply for DDR/SSTL-2, DDR2/SSTL-18, and DDR3 memory systems. TPS51216 provides a complete power supply for DDR2, DDR3, and DDR3L memory systems in the lowest total cost and minimum space.