Universal AC Input, 12V/3A Single stage PFC-Flyback Reference Design with Synchronous Rectification


Design files


The PMP9730 reference design employs the UCC28051 power factor correction controller to implement a single stage PFC-Flyback AC/DC converter that generates an isolated 12V output at 3A from a universal AC input. The design features UCC28910 primary side regulation Flyback switcher for generating the VDD bias rails and the UCC24610 for 2ndary side synchronous rectification.  This provides an excellent solution for systems such as motor drives requiring an isolated bus voltage, good power factor and high efficiency.

  • 89% 4-pt average efficiency
  • 90% peak efficiency
  • >0.85 Power factor at 100% load
  • No aluminum capacitors for small size and high reliability
  • Small form factor 50mm X 50mm x 18mm (2" X 2" X 0.7")
Output voltage options PMP9730.1
Vin (Min) (V) 85
Vin (Max) (V) 265
Vout (Nom) (V) 12
Iout (Max) (A) 3
Output Power (W) 36
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- PFC^PFC- Flyback
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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.

TIDUAI5.PDF (3906 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


Includes TI products in the design and potential alternatives.

Power factor correction (PFC) controllers

UCC28051Transition mode PFC controller with 12.5V/9.7V UVLO and IEC61000-3-2 compliance, -40°C to 105

Data sheet: PDF | HTML
Flyback controllers

UCC28910700V Flyback switcher with constant-voltage constant-current and primary-side control

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS71550-mA 24-V ultra-low-IQ low-dropout (LDO) voltage regulator

Data sheet: PDF | HTML
N-channel MOSFETs

CSD19531Q5A100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 6.4 mOhm

Data sheet: PDF | HTML
SR & load share controllers

UCC24610Secondary side synchronous rectifier controller

Data sheet: PDF | HTML
eFuses & hot swap controllers

TPS2592ZA4.5-V-18-V, 28mΩ, 1-2.1A eFuse

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP9730 Test Results Sep. 01, 2015

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