First fully integrated DDR memory power chip for automotive and industrial

October 04, 2016 // By Nick Flaherty
Texas Instruments (TI) has launched what it believes to be the industry’s first fully integrated power management IC for double date rate DDR2, DDR3 and DDR3L memory subsystems in automotive and industrial applications

TheTPS54116-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. Used in conjunction with TI’s WEBENCH online design tools, the TPS54116-Q1 simplifies power conversion and speeds the power-supply design process. 

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.

The integrated low- and high-side power MOSFETs and a 1-A sink/source DDR VTT termination regulator support 4 A of continuous output current, while current-mode control with external clock-synchronization capability keeps the frequency fixed across the entire output load range. The part is Automotive Electronics Council (AEC)-Q100 qualified with 4-kV electrostatic discharge (ESD) protection for automotive applications.

Available in volume now, 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. The TPS54116-Q1 evaluation module is also orderable from the TI store and distributors.

For more information, samples and an evaluation module, see