PMP8678 Reference Design

Texas Instruments

High Voltage Input (184Vac…707Vac) to 12V@1A: 3.3V@100mA Non-isolated Flyback Reference Design


The UCC28720 is a quasi resonant controller and is specialized to drive high voltage BJTs. When the drain voltage is higher than 1KV: BJTs are the best choice for low to mid power flyback converters. In this case two voltages are supplied: 12V@1A and 3.3V@100mA.

  • Over 84% efficiency at full loadOver 70% efficiency at 10% loadProvides 12V and 3.3V outputsWorks continuously up to 440Vac input and survives 1KVpeak surge
Product Categories
  • Power management


Part Number Name Companion Part
TPS560200 TPS560200 Buy Datasheet
UCC28720 UCC28720 Buy Datasheet

Bill Of Materials

Download the bill of materials for PMP8678 Download


Quickly understand overall system functionality.

Download the schematic for PMP8678

Design File

Download ready-to-use system files to speed your design process. Get Viewer.

Download the design file for PMP8678

Test Data

Get results faster with test and simulation data that's been verified.

Download the test file for PMP8678

Other Documents

Title Updated Type Size (KB)
PMP8678 Gerber 20 Oct 2014 ZIP 52
PMP8678 BOM 20 Oct 2014 PDF 36
PMP8678 Schematic 20 Oct 2014 PDF 192