5V/20W PSR Flyback with CCCV Regulation and Cable Compensation Reference Design


Design files


This reference design is a 120Vac to 5V primary side regulated flyback converter with synchronous rectification on the secondary side. PMP11500 has built in cable compensation  which adjusts the regulation set point to offset the resistance in long cables. The reference design has extremely low standby power and its wake-up detection scheme offers superior transient response. UCC28730 features integrated CCCV regulation without the use of an optocoupler. PMP11500 utilizes synchronous rectification which improves system efficiency across the designed load range.

  • 22mW standby power
  • Built-in cable compensation to offset cable resistance
  • Wake-up detection offers superior transient response
  • Synchronous rectification improves system efficiency
  • Constant-current, constant-voltage regulation
Output voltage options PMP11500.1
Vin (Min) (V) 85
Vin (Max) (V) 145
Vout (Nom) (V) 5
Iout (Max) (A) 4
Output Power (W) 20
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.

TIDUDG9.PDF (2108 K)

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

TIDRS69.PDF (127 K)

Detailed schematic diagram for design layout and components

TIDRS70.PDF (37 K)

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

TIDRS71.PDF (391 K)

Detailed overview of design layout for component placement

TIDRS73.ZIP (1043 K)

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


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

TIDRS72.PDF (532 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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

UCC24636Synchronous rectifier controller With Ultra-Low Standby current

Data sheet: PDF | HTML
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

Technical documentation

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Type Title Date
* Test report PMP11500 Test Results Aug. 15, 2017

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