336-W auxless AC/DC power supply reference design with 80 PLUS platinum compatible performance


Design files


This reference design uses UCC28056 CRM/DCM PFC controller and UCC256304 enhanced LLC controller with integrated driver to provide 24-V/10-A output (continuous, 14-A peak) from universal AC input. This design achieves 92.8% peak efficiency at 115-Vac input and 94.9% peak efficiency at 230-Vac input. The efficiency and power factor numbers also meet both 115-V and 230-V internal 80 PLUS Platinum specifications and DoE level VI requirement.

  • 24-V output with 240-W continue and 336-W peak output power capability
  • 80 PLUS Platinum compatible performance
  • Low, no-load power consumption without using additional auxiliary supply
  • 92.8% peak efficiency at 115-Vac input and 94.9% peak efficiency at 230-Vac input
Output voltage options PMP21160.1
Vin (Min) (V) 90
Vin (Max) (V) 264
Vout (Nom) (V) 24
Iout (Max) (A) 14
Output Power (W) 336
Isolated/Non-Isolated Isolated
Input Type AC
Topology Boost- PFC^Half Bridge- Resonant

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.

TIDT032.PDF (2964 K)

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


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRXI9.ZIP (1427 K)

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

TIDCEZ5.ZIP (2014 K)

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

TIDRXI8.PDF (1444 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

LLC controllers

UCC256304Wide vin LLC resonant controller with high-voltage start up enabling low standby power

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

CSD19502Q5B80-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 4.1 mOhm

Data sheet document-pdfAcrobat PDF open-in-new HTML
Power factor correction (PFC) controllers

UCC280566-pin high-performance CrM & DCM PFC controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
SR & load share controllers

UCC24612High-frequency multi-mode synchronous rectifier controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

TLVH431A1% low-voltage wide-operating current adjustable precision shunt regulator

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

Technical documentation

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Type Title Date
* Test report 336-W Auxless AC/DC Power Supply Reference Design Nov. 05, 2018

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