85 to 265Vac In, 48V1A Out Power Supply for STB with <75mW Standby Power Reference Design


Design files


The PMP40025 is a universal AC input, 48W output flyback converter based on primary side regulation(PSR) which eliminates optocouplers and secondary side feedback components reducing BOM cost. The design features a single 48V/1A output with average efficiency greater than 89% and 75mW no load power (compliant with DOE 6 &CoC V5 Tier 2 standard). The design aslo demostrates  excellent +/-3% transient response from no load to full load due to a wake up feature provided by UCC24650.

  • <75mW low standby power @230Vac no load
  • +/-3% transient response from no load to full load
  • High efficiency at 10% load and four points average
  • Pass EN55022B CE test
  • Single-side PCB board for low cost
Output voltage options PMP40025.1
Vin (Min) (V) 85
Vin (Max) (V) 265
Vout (Nom) (V) 48
Iout (Max) (A) 1
Output Power (W) 48
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- DCM
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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.

TIDUC13.PDF (457 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


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

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

Data sheet: PDF | HTML
SR & load share controllers

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

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP40025 Test Results Jul. 01, 2016

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