Ultra-Small SWIFT Step-Down Converter

Texas Instruments (TI) recently introduced the industry’s first 12-V, 10-A, 10-MHz series-capacitor buck converter that achieves more than 50 A/cm3 in current density, which is 4× higher than any other 12-V power management component or solution on the market. The TPS54A20 SWIFT synchronous DC/DC converter’s topology enables high-frequency operation at up to 5 MHz per phase without special magnetics or compound semiconductors, which you can use for 8-to-14-V input and 10-A output applications. By using the step-down converter together with TI’s WEBENCH Power Design tool, you can get your space- and height-constrained point-of-load (POL) telecom and networking power-supply designs to market faster.TI TPS54A20

TPS54A20 key features and benefits:

  • Two-phase, series-capacitor DC/DC buck topology that merges a switched-capacitor circuit with a multiphase buck converter
  • Small HotRod quad flat no-lead (QFN) packaging
  • Inexpensive, tiny 2- to 5-MHz inductors enable a 131-mm2 solution size that consumes 50% less area than similar 500-kHz DC/DC converter designs.
  • At under 2 mm tall, the reduced size, weight, and bill of materials (BOM) allows for the placement of tiny 10-A voltage regulators on the back side of a PCB
  • A 14-ns minimum on-time allows for 4-/7-/10-MHz operation without compromising efficiency or EMI performance.

The new DC/DC converter is available in volume.  The TPS54A20 costs $3.25 in 1,000-unit quantities. Order the 4-MHz, 10-ATPS54A20EVM-770 synchronous dual-phase converter evaluation module and download the PSpice transient models.

Source: Texas Instruments

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