AC Input,12-V/5-A and 50-V/1-A dual-output flyback reference design


Design files


This reference design is a 12-V/5-A and 50-V/1-A isolated dual-output auxiliary power supply. Secondary-side regulation improves the line and load regulation using UCC28742. DCM valley-switching operation enable higher efficiency at light load. All components height below 20 mm enable slim TV application.

  • Valley-switching enable higher efficiency at light load
  • Higher integrated protection simplifies the bom cost and save space
  • Components height is below 20 mm to enable slim TV application
Output voltage options PMP40467.1 PMP40467.2
Vin (Min) (V) 180 180
Vin (Max) (V) 264 264
Vout (Nom) (V) 12 50
Iout (Max) (A) 5 1
Output Power (W) 60 50
Isolated/Non-Isolated Isolated Isolated
Input Type AC AC
Topology Flyback- DCM Flyback- DCM
?? View video with transcript Video

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.

TIDT066.PDF (1794 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


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

TIDCF69.ZIP (416 K)

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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28742High-Efficiency Flyback Controller with 1% Output regulation accuracy

Data sheet: PDF | HTML
Shunt voltage references

ATL4312.5-V low-IQ adjustable precision shunt regulator

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Test report AC input, 12-V/5-A and 50-V/1-A dual-output flyback reference design Jan. 04, 2019

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​