Low-cost Universal AC-DC Input Non-isolated Buck Conv using BJT for 12V/0.2A Output Reference Design PMP9707 (ACTIVE)

Description & Features

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Description

The PMP9707 reference design uses Buck converter to convert universal AC input voltage (85Vac to 265Vac) to a 12V/200mA DC output with UCC28722 controller. BJT is applied to the buck switch for cost optimization, and simplicity is achieved with bulit-in sample and hold regulation function in UCC28722.

Features
  • Universal AC Input Wide Vin capability (85Vac to 265Vac)
  • Simple, Low cost solution with BJT employed as Buck switch
  • Small 14.6mm2 two layer PCB footprint with 24 BOM components (excluding test points)
  • Conducted EMI tested (confirms EN550022 and CISPR-22 Class B)

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Schematic/Block Diagram

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Test Data

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Design Files

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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

CAD/CAE symbols

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 1022 10 Dec 2014
Design files (3)
Title Type Size (KB) Date
PDF 111 06 May 2015
PDF 105 06 May 2015
ZIP 188 10 Dec 2014

Support & training

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