Reference Design - Universal Line Input AC-DC 3W High Side Buck Converter using UCC28720

(ACTIVE) PMP9649

Description & Features

Technical Documents

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Description

The PMP9649 reference design is a simple, low-cost high side Buck converter to convert universal AC input voltage (85Vac to 265Vac) to a non-isolated 20V/150mA DC output with UCC28720 controller. BJT is applied as the buck switch for cost optimization, and simplicity is achieved with bulit-in sample and hold regulation function in UCC28720.

Features
  • Universal AC Input (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)
  • Greater than 77% full-load efficiency at high line
  • Conducted EMI tested (confirms EN550022 and CISPR-22 Class B)

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


  




Parametrics
 PMP9649.1
(Output Voltage 1)
Vin (Min) (V)85
Vin (Max) (V)265
Vout (Nom) (V)20
Iout (Max) (A).15
Output Power (W)3
Isolated/Non-IsolatedNon-Isolated
Input TypeAC
TopologyBuck- Non Sync

TI Devices (1)

Order samples, get tools and find more information on the TI products in this reference design.

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 and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules

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 1158 10 Dec 2014 295
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 188 10 Dec 2014 115
PDF 108 10 Dec 2014 15
PDF 80 10 Dec 2014 303


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