High efficiency 3.3-V/4-A synchronous flyback with hiccup protection reference design
PMP21488
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 flyback reference design is for an isolated 15-W low voltage rail. It features a LM5020—100-V wide input flyback controller.  A synchronous secondary rectifier UCC24610 was used for high efficiency. It further enhances the LM5020 with hiccup protection by using a simply discrete circuitry. It is good for low voltage isolated supplies where high efficiency and hiccup protection are needed.

Features
  • 43-V - 57-V in and 3.3-V/4-A out for isolated supplies
  • High efficiency 86.4% reduces thermal dissipation
  • Hiccup protection for enhanced safety and reliability
  • Small solution size: 1" x 1.775" (25.4 mm x 45.1 mm)

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
 PMP21488.1
(Output Voltage 1)
Vin (Min) (V)43
Vin (Max) (V)57
Vout (Nom) (V)3.3
Iout (Max) (A)4
Output Power (W)13.2
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFlyback- Synchronous

TI Devices (4)

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
CSD18543Q3A  60V, N ch NexFET MOSFET™, single SON3x3, 9.9mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LM5020  13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
LMV431A  Low-Voltage (1.24V) Adjustable Precision Shunt Regulators  Voltage references  Sample & Buy Not Available
UCC24610  Secondary Side Synchronous Rectifier Controller  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)
CSD18543Q3A VSONP (DNH)| 8 Download Download
LM5020 Download Download
Download Download
LMV431A Download Download
Download Download
Download
UCC24610 Download Download
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 2488 04 Jan 2019
Design files (5)
Title Type Size (KB) Date
ZIP 79 04 Jan 2019
PDF 149 04 Jan 2019
PDF 26 04 Jan 2019
PDF 77 04 Jan 2019
PDF 23 04 Jan 2019

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