High Efficiency 5V@1.5A Adapter (meets DOE-VI standard) using BJT Solution
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This reference design demostrates a low cost single PCB board solution for 5V1.5A adapter. By using primary side regulation (PSR) mode chip UCC28720 which drives bipolar power device, average efficiency >80% @230Vac is achieved. Output ripple <80mV, and Vo(min) >4.32V with 0~0.5A load transient. The overall size is limited in 43mm(L)X28mm(W)x16mm(H) and no load power is less than 20mW.


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
User guides (1)
Title Type Size (KB) Date
PDF 788 26 Jun 2013
Design files (4)
Title Type Size (KB) Date
ZIP 117 26 Jun 2013
PDF 326 26 Jun 2013
PDF 41 26 Jun 2013
PDF 37 26 Jun 2013

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