PMP9649 Reference Design

Texas Instruments

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

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 switchSmall 14.6mm2 two layer PCB footprint with 24 BOM components (excluding test points)Greater than 77% full-load efficiency at high lineConducted EMI tested (confirms EN550022 and CISPR-22 Class B)
Applications
Product Categories

Parts

Part Number Name Companion Part
UCC28720 UCC28720 Buy Datasheet

Bill Of Materials

Download the bill of materials for PMP9649 Download

Schematic

Quickly understand overall system functionality.

Download the schematic for PMP9649

Design File

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

Download the design file for PMP9649

Test Data

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

Download the test file for PMP9649

Other Documents

Title Updated Type Size (KB)
PMP9649 Gerber 10 Dec 2014 ZIP 188
PMP9649 BOM 10 Dec 2014 PDF 108
PMP9649 Schematic 10 Dec 2014 PDF 80