Universal AC Input, 10.5V/1.8A DC Output, Isolated Synchronous Flyback Converter Reference Design


Design files


The PMP10164 reference design supplies 10.5V@1.8A from universal AC mains; the isolated Flyback topology is the most used for low power range due to single magnetic component. Since the load is a power line communication chip, a fixed frequency modulation has been chosen. The controller LM5021 performs also pulse skip mode thus improving efficiency at light load. A synchronous rectification controller UCC24630 has been employed to increase the efficiency and the thermal performance.

  • LM5021 based Isolated Flyback in constant switching frequency delivering 10.5V@1.8A
  • >87% efficiency at full load and 230Vac
  • Synchronous rectification with UCC24630 improves efficiency and thermal performance
  • Output overvoltage protection with latch, in case of loop opto fail
  • This design is tested and includes test results and CAD files
Output voltage options PMP10164.1
Vin (Min) (V) 90
Vin (Max) (V) 265
Vout (Nom) (V) 10.5
Iout (Max) (A) 1.8
Output Power (W) 18.9
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- Synchronous
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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.

TIDUAS2.PDF (1035 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

TIDRHI6.PDF (1477 K)

Detailed overview of design layout for component placement

TIDRHI7.ZIP (1004 K)

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


Includes TI products in the design and potential alternatives.

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

LM502130V, 1MHZ current mode PWM controller

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

UCC24630Synchronous rectifier controller With Ultra Low Standby current

Data sheet: PDF | HTML

CSD19533Q5A100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 9.5 mOhm

Data sheet: PDF | HTML
Shunt voltage references

TL431Adjustable precision shunt regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP10164 Test Results Sep. 28, 2015

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