Universal AC 40W Set Top Box Power Supply (1.2V @ 3A)


Design files


This reference evaluation module is an example of complete power-trees inside a set-top-box.
It performs an AC-DC conversion, then, DC-DC conversions for 1.2V/1.8V/2.5V/3.3V/5V rails.

  • Provides ready to copy complete power solution for a Set Top Box application
  • AC/DC provides isolated 12V for all down stream DC/DC conversion
  • AC/DC converter achieves over 85% efficiency at full load
  • All DC/DC rails provide individual enable and power-good functionalities
  • Very compact and cost effective 2-layer PCB design
  • This design is tested and ready to be used in any Set Top Box design

Output voltage options PMP5411.1 PMP5411.2 PMP5411.3 PMP5411.4 PMP5411.5 PMP5411.6
Vin (Min) (V) 85 10 10 10 10 10
Vin (Max) (V) 265 14 14 14 14 14
Vout (Nom) (V) 12 5 3.3 2.5 1.8 1.2
Iout (Max) (A) 3.4 1.5 3 3 3 3
Output Power (W) 40.8 7.5 9.9 7.5 5.4 3.6
Isolated/Non-Isolated Isolated Isolated Isolated Isolated Isolated Isolated
Input Type AC DC DC DC DC DC
Topology Flyback- DCM^Flyback- Quasi Resonant Buck- Synchronous Buck- Synchronous Buck- Synchronous Buck- Synchronous 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.

SLUU588.PDF (3040 K)

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

SLUR421.PDF (127 K)

Detailed schematic diagram for design layout and components

SLUR422.PDF (115 K)

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

TIDC129.ZIP (151 K)

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


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS543254.5V to 18V Input, 3A Synchronous Step-Down Converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Flyback controllers

UCC2861012-65W green-mode Flyback power supply controller

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Test report PMP5411 Test Results Sep. 16, 2013

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