PMP31248

230V AC input 12V primary side regulated flyback reference design

PMP31248

Design files

Overview

This reference design is a quasi-resonant flyback power supply based on the UCC28730 primary side regulation (PSR) controller and UCC24650 (wake-up monitor). Using PSR topology eliminates the need of an optocoupler, increases reliability and optimizes system cost. This design achieves less than 6 mW standby power at 230 VAC and over 85% efficiency at 25 W load.

Features
  • 185-VAC to 265-VAC input with 50 Hz and 60 Hz and 12-V, 2.1-A output
  • Over 85% average four-point efficiency
  • Over 82% efficiency at 2% load (0.4 W)
  • Less than 6 mW standby power losses
  • Protected against output short circuits
Output voltage options PMP31248.1
Vin (Min) (V) 185
Vin (Max) (V) 265
Vout (Nom) (V) 12
Iout (Max) (A) 2.1
Output Power (W) 25.2
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- DCM^Flyback- Non Sync^Flyback- Quasi Resonant
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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.

PDF | HTML
TIDT339.PDF (984 K)

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

TIDMBO8.PDF (315 K)

Detailed schematic diagram for design layout and components

TIDMBO9.PDF (278 K)

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

TIDMBP0.PDF (203 K)

Detailed overview of design layout for component placement

TIDMBP2.ZIP (1069 K)

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

TIDCGF9.ZIP (126 K)

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

TIDMBP1.PDF (616 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

UCC24650200-V wake-up monitor for fast transient primary-side regulation

Data sheet: PDF | HTML
AC/DC & DC/DC controllers (external FET)

UCC28730Zero standby PSR flyback controller with CVCC and wake-up monitoring

Data sheet: PDF | HTML
AC/DC & DC/DC controllers (external FET)

UCC28730-Q1Zero-power standby PSR flyback controller for automotive

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report Universal AC Input, 12-V, 25-W PSR Reference Design PDF | HTML Jun. 30, 2023

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