TI's 17-V synchronous buck converter integrates MOSFETs - Embedded.com

TI’s 17-V synchronous buck converter integrates MOSFETs

A new synchronous step-down DC/DC converter from Texas Instruments Incorporated features integrated MOSFETs in a 3.5 mm x 3.5 mm HotRod QFN package. The SWIFT 10-A TPS54020 features high power density and includes frequency synchronization and 180-degree out-of-phase switching. The new converter has selectable current limit to power FPGAs, system-on-chip (SoC), DSPs and processors in high-voltage, space-constrained communication, gaming and industrial computing applications.

The new HotRod integrated circuit package protects the integrated MOSFETs from parasitic inductance and allows low resistance, enabling high current and efficiency and small size. The thermally enhanced, 15-lead package is 50 percent smaller than similar offerings.

Key features

  • Integrated 8-milliohm high-side and 6-milliohm low-side MOSFETs provide up to 96-percent efficiency from 12 V to 1 V.
  • Selectable 6-A, 8-A and 10-A current limit thresholds allow optimization for efficiency at a lower output current, while reducing the size of external components.
  • 180-degree out-of-phase switching reduces input current ripple by up to 50 percent.
  • 200-KHz to 1.2-MHz adjustable switching frequency supports small output inductors and capacitors for further space savings.

Using the converter together with TI's WEBENCH online design tool simplifies high-voltage DC/DC conversion and speeds the design process.

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