PMP9059 Reference Design

Texas Instruments

120VAC Input 5V/200mA Flyback Converter With BJT Switch Reference Design


This reference design creates a 5V at 200mA from a 120VAC Input. This supply is to designed to fit into a very small volume with approximately 10mm total height. The UCC28720 primary side controller with a BJT power switch provides a low cost design. A TPS71433 is also used to provide an additional 3.3V rail. It is important to note the outputs are only functionally (not for safety) isolated from the input.

Product Categories
  • Power management


Part Number Name Companion Part
UCC28720 UCC28720 Buy Datasheet

Bill Of Materials

Download the bill of materials for PMP9059 Download

Other Documents

Title Updated Type Size (KB)
PMP9059 PCB 13 Sep 2013 PDF 159
PMP9059 Gerber 13 Sep 2013 ZIP 163
PMP9059 BOM 13 Sep 2013 PDF 79
PMP9059 Schematic 13 Sep 2013 PDF 111