PMP20490

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

PMP20490

Design files

Overview

The TPS546C23 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. PMP20490 shows a high current two phase application with inductors on top of control ICs for smaller footprint and two on board dynamic loads. The test report shows performance and efficiency with two sources of inductors.

Features
  • 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
  • Inductors on top of controllers for small overall footprint
  • Rich test interface including a self contained high speed dynamic test load and a Signal Generator driven dynamic test load
  • Schematic, BOM, layout and test report focusing on efficiency & ripple performance with two sources for the inductors
Output voltage options PMP20490.1
Vin (Min) (V) 4.5
Vin (Max) (V) 13.2
Vout (Nom) (V) 1.2
Iout (Max) (A) 60
Output Power (W) 72
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Multiphase^Buck- Synchronous

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUCV7.PDF (2786 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDUCN8.PDF (3632 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRPM2.PDF (649 K)

Detailed schematic diagram for design layout and components

TIDRPM3.PDF (107 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRPM4.PDF (245 K)

Detailed overview of design layout for component placement

TIDRPM6.ZIP (896 K)

Files used for 3D models or 2D drawings of IC components

TIDCD44.ZIP (594 K)

Design file that contains information on physical board layer of design PCB

TIDCCX3.ZIP (607 K)

Design file that contains information on physical board layer of design PCB

TIDRPM5.PDF (2682 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS546C234.5-V to 18-V, stackable 35-A synchronous SWIFT™ buck converter with PMBus and telemetry

Data sheet document-pdfAcrobat PDF open-in-new HTML
Low-side drivers

UCC27324Non-inverting 4-A/4-A dual-channel low side gate driver

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD16325Q525-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 2.2 mOhm

Data sheet document-pdfAcrobat PDF

Technical documentation

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Type Title Date
* Test report PMP20490 Test Results Jan. 30, 2017
Test report PMP20292 Test Results Nov. 22, 2016

Related design resources

Reference designs

REFERENCE DESIGN
PMP20292 High-Density 12Vin, 1.2Vout, 60A POL Reference Design with Stacked TPS546C20A PMBus DCDC Converters

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