120VAC Input 5V/250mA Flyback Converter With BJT Switch Reference Design

(ACTIVE) PMP9235

Description & Features

Technical Documents

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Description

This reference design creates a 5V at 250mA from a 120VAC Input. The UCC28720 primary side controller with a BJT power switch provides a low cost design. It is important to note the outputs are only functionally (not for safety) isolated from the input.

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Bill of Materials (BOM)

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Parametrics
 PMP9235.1
(Output Voltage 1)
Vin (Min) (V)85
Vin (Max) (V)132
Vout (Nom) (V)5
Iout (Max) (A).25
Output Power (W)1.25
Isolated/Non-IsolatedIsolated
Input TypeAC
TopologyFlyback- Quasi Resonant
Flyback- Non Sync
Flyback- DCM

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28720  Constant-Voltage, Constant-Current Controller with Primary-Side Regulation for Bipolar Power Devices  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)
UCC28720 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 1281 06 Feb 2014 6
Design files (4)
Title Abstract Type Size (KB) Date Views
PDF 150 06 Feb 2014 4
ZIP 171 06 Feb 2014 4
PDF 79 06 Feb 2014 7
PDF 105 06 Feb 2014 6

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