5V/1.6A & 12V/10mA AC/DC Flyback PSU for E-meter Apps Optimized for Low AC Line Input Ref Design


Design files


The TIDA-00583 is a Flyback converter which can operate in very low AC line input (Minimum 45Vac) and provide a regulated, fully-isolated 5V@1.6A output for communication model of E-meter, as well as another low-power 12V non-isolated output. Featuring TIs UCC28722 PSR controller which provides accurate voltage and constant current regulation with primary-side feedback, and bipolar power switch the design eliminates opto-coupler feedback circuits and reduces system cost.

  • Wide Input range from 45Vac to 265Vac
  • Multi outputs with 5V/1.6A (2.2A peak) and 12V/10mA(non-isolated)
  • Average 4-point efficiency of 73.8% or higher
  • 72% or higher efficiency at full power (5V/2.2A)
  • Low output ripple at full load, less than 150mV
  • Low system cost due to use of PSR control, BJT switch and single layer PCB
Output voltage options TIDA-00583.1 TIDA-00583.2
Vin (Min) (V) 45 45
Vin (Max) (V) 265 265
Vout (Nom) (V) 5 12
Iout (Max) (A) 1.6 .01
Output Power (W) 8 .12
Isolated/Non-Isolated Isolated Non-Isolated
Input Type AC AC
Topology Flyback- DCM Flyback- DCM
??image.gallery.download_en_US?? View video with transcript Video

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.

TIDUA24.PDF (3169 K)

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

TIDRF31.PDF (238 K)

Detailed schematic diagram for design layout and components

TIDRF32.PDF (85 K)

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


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


Includes TI products in the design and potential alternatives.

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

UCC28722Low-Cost CVCC Flyback controller With primary-side regulation for bipolar Power Device

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Test report TIDA-00583 Test Results Jun. 08, 2015

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​