8.5W Dual Output (5V/12V) Universal Input AC/DC Isolated Flyback Reference Design with PSR
TIDA-00618
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Description & Features

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Key Document

Description

The TIDA-00618 reference design is a Primary Side Regulation switcher which provides isolated dual outputs, 5V and 12V rails, with DC stacking of the secondaries to provide output voltage regulation that is equivalent to opto-coupler based solution.

Low system parts count and built in advanced protection features result in a cost-effective solution with an average efficiency of nearly 75% at 230V

Features
  • Isolated 5V and 12V output at 500mA maximum
  • Conducted EMI compliant
  • 100ms typical start-up time
  • Primary side control eliminates need for optocoupler
  • Input under & Output over voltage protection
  • Primary over current protection
  • Controlled start up and restart after fault Protection

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 TIDA-00618.1
(Output Voltage 1)
TIDA-00618.2
(Output Voltage 2)
Vin (Min) (V)8585
Vin (Max) (V)265265
Vout (Nom) (V)512
Iout (Max) (A).5.5
Output Power (W)2.56
Isolated/Non-IsolatedIsolatedIsolated
Input TypeACAC
TopologyFlyback- DCMFlyback- DCM

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28911  700V Flyback Switcher with Constant-Voltage Constant-Current and Primary-side Regulation  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
UCC28911 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 813 28 Jul 2015
Design files (4)
Title Type Size (KB) Date
ZIP 253 28 Jul 2015
PDF 106 28 Jul 2015
PDF 30 28 Jul 2015
PDF 237 28 Jul 2015

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