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


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

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(Output Voltage 1)
(Output Voltage 2)
Vin (Min) (V)4545
Vin (Max) (V)265265
Vout (Nom) (V)512
Iout (Max) (A)1.6.01
Output Power (W)8.12
Input TypeACAC
TopologyFlyback- DCMFlyback- DCM

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28722  Low-Cost CVCC Flyback Controller With Primary-Side Regulation for Bipolar Power Device  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

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Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
UCC28722 Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 3127 08 Jun 2015
Design files (3)
Title Type Size (KB) Date
ZIP 228 08 Jun 2015
PDF 85 08 Jun 2015
PDF 238 08 Jun 2015

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