Power

DDR buck converter is industry's first fully integrated power solution

4th October 2016
Daisy Stapley-Bunten

The industry’s first fully integrated power management solution for double date rate (DDR)2, DDR3 and DDR3L memory subsystems in automotive and industrial applications has been introduced by Texas Instruments. The TPS54116-Q1 DC/DC buck converter is a 2.95 to 6V input, 4-A synchronous step-down converter with a 1-A peak sink/source DDR termination.

It also has a buffered reference that reduces system size by up to 50% 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 newest addition to TI’s industry-leading DC/DC converter portfolio, the TPS54116-Q1 buck converter provides up to 2.5MHz switching frequency and minimises 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 synchronisable to an external clock. Read the blog post, “Four design tips to obtain 2MHz switching frequency.”

Download the Automotive Power Reference Design for Low Power TDA3x Based Systems to create an integrated, size-optimised power supply for ADAS featuring the TPS54116-Q1 when using TI’s TDA3 system on chip.

TPS54116-Q1 key features and benefits:

  • 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.

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