TI Home >   Semiconductors >   Design resources >   Reference designs >   80V/50W Upside-Down Buck Reference Design

80V/50W Upside-Down Buck Reference Design
PMP20686
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical Documents

Support & Training

Order Now


See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document

Description

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

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

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

Download Design Guide

Design Files

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

Download Design Files
Parametrics
 PMP20686.1
(Output Voltage 1)		PMP20686.2
(Output Voltage 2)
Vin (Min) (V)8585
Vin (Max) (V)265265
Vout (Nom) (V)8012
Iout (Max) (A).625.05
Output Power (W)50.6
Isolated/Non-IsolatedNon-IsolatedNon-Isolated
Input TypeACAC
TopologyBuck- Upside DownBuck- Non Sync

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28730  Zero Standby PSR Flyback Controller with CVCC and Wake-Up Monitoring  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28880  High Voltage Switcher for Non-isolated AC/DC Conversion  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)
UCC28730 Download Download
UCC28880 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 984 21 Jun 2017
Design files (6)
Title Type Size (KB) Date
ZIP 525 21 Jun 2017
ZIP 807 21 Jun 2017
PDF 631 21 Jun 2017
PDF 83 21 Jun 2017
PDF 64 21 Jun 2017
PDF 94 21 Jun 2017

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles