8W Primary-Side Regulated Flyback Using UCC28911 Reference Design

(ACTIVE) PMP11774

Description & Features

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Key Document

Description

The PMP11774 reference design uses the UCC28911 quasi-resonant flyback converter to generate two isolated outputs (18V @ 0.35A, 5V @ 0.35A). The UCC28911 incorporates a 700V power FET and provides primary-side regulation, eliminating the need for an opto-coupler and reducing the total component count. This results in a compact and cost effective design.

Features
  • Wide AC input range (100VAC - 254VAC)
  • MOSFET integrated PSR controller
  • Two isolated outputs
  • Over current, over voltage and short-circuit protected
  • Test report available

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP11774.1
(Output Voltage 1)
PMP11774.2
(Output Voltage 2)
Vin (Min) (V)100100
Vin (Max) (V)254254
Vout (Nom) (V)185
Iout (Max) (A).35.35
Output Power (W)6.31.75
Isolated/Non-IsolatedIsolatedIsolated
Input TypeACAC
TopologyFlyback- Quasi ResonantFlyback- Quasi Resonant

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 Abstract Type Size (KB) Date Views TI Recommends
PDF 1110 02 May 2016 9
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 748 02 May 2016 8
PDF 59 02 May 2016 5
PDF 139 02 May 2016 13

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