Fully-Integrated 4-Amp DDR Memory Power Solution
Texas Instruments (TI) introduced the first fully-integrated power management solution for double date rate (DDR)2, DDR3 and DDR3L memory subsystems in automotive and industrial applications. The TPS54116-Q1 dc-dc buck converter is a 2.95-V to 6-V input, 4-A synchronous step-down converter with a 1-A peak sink/source DDR termination and buffered reference that reduces system size by up to 50 percent compared to discrete implementations. Designed for automotive applications such as infotainment, advanced driver assistance systems (ADAS) and instrument clusters, the TPS54116-Q1 can also power DDR memory in telecommunication, test and measurement, and factory automation equipment.
The newest addition to TI's dc-dc converter portfolio, the TPS54116-Q1 buck converter provides up to 2.5-MHz switching frequency and minimizes solution size by integrating the MOSFETs and reducing inductor size. The switching frequency can be set above the medium-wave radio band for noise-sensitive applications and is synchronizable to an external clock.
TPS54116-Q1 key features and benefits include: Integrated low- and high-side power MOSFETs and a 1-A sink/source DDR VTT termination regulator support 4 A of continuous output current. Current-mode control with external clock-synchronization capability keeps the frequency fixed across the entire output load range. Automotive Electronics Council (AEC)-Q100 qualified with 4-kV electrostatic discharge (ESD) protection for automotive applications.
Available in volume now from the TI store and authorized distributors, the converter is packaged in a thermally enhanced 24-pin, 4-mm-by-4-mm-by-0.75-mm very thin quad flat no-lead (WQFN) package and priced at US$2.50 in 1,000-unit quantities.