PMP21927

15-W multi-output off-line flyback reference design

PMP21927

Design files

Overview

This reference design takes a universal Vac input and creates three isolated 15-Vdc outputs. The main output can be loaded up to 1-A and achieves over 86% efficiency. The other isolated 15-V outputs can be loaded to 50-mA. These outputs have linear regulators to keep the voltages within 1% regardless of cross-loading conditions.

Features
  • Primary side regulated flyback to create multiple isolated outputs
  • Low profile >20mm design
  • 3% accuracy on 1-A output, 1% accuracy on 50-mA outputs
Output voltage options PMP21927.1 PMP21927.2
Vin (Min) (V) 85 16.7
Vin (Max) (V) 265 17.1
Vout (Nom) (V) 15 15
Iout (Max) (A) 1 .05
Output Power (W) 15 .75
Isolated/Non-Isolated Isolated Non-Isolated
Input Type AC DC
Topology Flyback- Quasi Resonant Linear Regulator
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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.

TIDT118.PDF (2312 K)

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

TIDRLG3A.PDF (170 K)

Detailed schematic diagram for design layout and components

TIDRQZ6A.PDF (291 K)

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

TIDRX08.PDF (137 K)

Detailed overview of design layout for component placement

TIDRX76.ZIP (919 K)

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

TIDCFJ5.ZIP (1170 K)

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

TIDRX10.PDF (791 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

UCC28711Constant-voltage, constant-current PWM with PSR, valley switching, NTC option, and 0-mV cable comp.

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV760100-mA, 30-V, low-dropout voltage regulator

Data sheet: PDF | HTML
Shunt voltage references

ATL4312.5-V low-IQ adjustable precision shunt regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report 15-W Multi-Output Off-Line Flyback Reference Design Jun. 28, 2019

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