PMP20686

80V/50W Upside-Down Buck Reference Design

PMP20686

Design files

Overview

This UCC28730 based upside-down buck design converts a universal line input to a non-isolated 80V/50W output. An additional 12V/600mW output is produced using a UCC28880. The design achieves over 93% efficiency and consumes less than 50mW of standby power.

Features
  • Universal line input 85VAC - 265VAC
  • Over 93% efficiency for low nad high line at 50W
  • Low standby power consumption <50mW
  • 2 layer board, 1 oz copper weight, dimensions are 2.1in x 2.8in x 1in
  • Low cost design
Output voltage options PMP20686.1 PMP20686.2
Vin (Min) (V) 85 85
Vin (Max) (V) 265 265
Vout (Nom) (V) 80 12
Iout (Max) (A) .625 .05
Output Power (W) 50 .6
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type AC AC
Topology Buck- Upside Down Buck- Non Sync

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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

TIDUDB4.PDF (1052 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRRH0.PDF (94 K)

Detailed schematic diagram for design layout and components

TIDRRH1.PDF (64 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRRH2.PDF (83 K)

Detailed overview of design layout for component placement

TIDRRH4.ZIP (807 K)

Files used for 3D models or 2D drawings of IC components

TIDCDK3.ZIP (525 K)

Design file that contains information on physical board layer of design PCB

TIDRRH3.PDF (631 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28730Zero standby PSR flyback controller with CVCC and wake-up monitoring

Data sheet document-pdfAcrobat PDF open-in-new HTML
Flyback controllers

UCC28880High voltage switcher for Non-isolated AC/DC Conversion

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Test report PMP20686 Test Results Jun. 21, 2017

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