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DDR memory power solution now fully integrated

Texas Instruments (TI) has introduced what is said to be the industry’s first fully integrated power management solution for DDR2, DDR3 and DDR3L memory subsystems in automotive and industrial applications.

The TPS54116-Q1 DC/DC buck converter is a 4A synchronous step-down converter with a 2.95V to 6V input and a 1A peak sink/source DDR termination, as well as buffered reference. The part is claimed to reduce system size by up to 50% compared to discrete implementations.

Designed for automotive applications such as infotainment, 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 is claimed to simplify power conversion as well as speed the power-supply design process.

The buck converter is said to provide up to 2.5MHz switching frequency and minimise 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 can be synchronised to an external clock.

Key features:

  • Integrated low- and high-side power MOSFETs
  • Current-mode control with external clock-synchronisation capability
  • AEC-Q100 qualified with 4kV electrostatic discharge protection
  • 1A sink/source DDR VTT termination regulator supports 4A of continuous output current

Peggy Lee

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