Reference Design: 8.5V-13.2V to 1.2V 50A DC/DC Converter
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Key Document


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 for a given switching frequency. PMP20071 shows a high current two phase application. The Test Report show the loss sharing between the two power stages, output ripple reduction and improved dynamic response due to the two phases.

  • Complete high current 2 phase DC/DC converter with all the advantages of phase interleaving using only two of the single phase parts
  • Fixed frequency voltage mode control allows for user selection of switching frequency and synchronization to an external clock
  • Output voltage, current limit and fault thresholds / responses can be adjusted "on the fly" thru the PMBus interface
  • Rich test interface including PMBus socket, and high speed dynamic test load
  • Schematic, BOM, layout and Test Report focusing on thermal performance & load dynamics

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(Output Voltage 1)
Vin (Min) (V)8.5
Vin (Max) (V)13.2
Vout (Nom) (V)1.2
Iout (Max) (A)50
Output Power (W)60
Input TypeDC
TopologyBuck- Synchronous

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS546C20A  4.5-V to 18-V, stackable 35-A synchronous SWIFT™ buck converter with PMBus and pin-strapping  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

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

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1629 09 Sep 2016
Design files (7)
Title Type Size (KB) Date
PDF 72 13 Sep 2016
PDF 919 13 Sep 2016
ZIP 899 09 Sep 2016
ZIP 6532 09 Sep 2016
ZIP 393 09 Sep 2016
PDF 3807 09 Sep 2016
PDF 362 09 Sep 2016

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