This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
4.5V to 18V, 35A, 2X stackable synchronous buck converter w/ PMBus™, telemetry, ext. pin strapping


Models (2)

Title Category Type Date
TPS546C20A SIMPLIS Transient Model SIMPLIS Model ZIP 30 Jan 2020
TPS546C20 PSpice Transient Model PSpice Model ZIP 14 Mar 2016

Design kits & evaluation modules (2)

Name Part# Type
TPS546C20A 35A PMBus Stackable Synchronous Buck Converter Evaluation Module TPS546C20AEVM1-746 Evaluation Modules & Boards
TPS546C20A Two-Phase Evaluation Module With PMBUS TPS546C20AEVM2-746 Evaluation Modules & Boards

Reference designs

High-Density 12Vin, 1.2Vout, 60A POL Reference Design with Stacked TPS546C20A PMBus DCDC Converters

The TPS546C20A provides a single IC for both control & the synchronous power stage for high current DC/DC applications and allows doubling of the current capability with use of two of the same part.  Multi-phase also allows output ripple cancellation and effective higher bandwidth control (...)

View the Important Notice for reference designs covering authorized use, intellectual property matters and disclaimers.

CAD/CAE symbols

Part# Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS546C20A Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Please follow the instructions below to view the CAD symbols:

Step 1: Download and install the Ultra Librarian software

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Step 3: Open the .bxl file with the Ultra Librarian software.

You can always access the complete CAD/CAE Symbols database at //

Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a free download.

The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.

WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS546C20A

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.35 to 5.5V
Iout  A ≤ 35A
Ambient Temp  °C -40 to 125°C