PMP22021

Compact isolated DC/DC flyback reference design

PMP22021

Design files

Overview

This reference design uses LM5022-Q1 to make an isolated 3.3-V output capable of 1.1-A from a 9-V to 15-V input. All components are placed on one side of the board to reduce assembly complexity and cost. A secondary filter reduces the output ripple to under 30-mV peak-to-peak. The design can achieve 80% efficiency across input conditions.

Features
  • Less than 1% voltage ripple on output
  • 80% efficiency across input voltage range
  • Compact board design with top side only assembly
  • 1.5-kV AC RMS isolation
Output voltage options PMP22021.1
Vin (Min) (V) 9
Vin (Max) (V) 15
Vout (Nom) (V) 3.3
Iout (Max) (A) 1.1
Output Power (W) 3.63
Isolated/Non-Isolated Isolated
Input Type DC
Topology Flyback- CCM
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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.

TIDT112.PDF (1613 K)

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

TIDRZU5A.PDF (118 K)

Detailed schematic diagram for design layout and components

TIDRZU6A.PDF (285 K)

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

TIDRZU7.PDF (76 K)

Detailed overview of design layout for component placement

TIDRZU9.ZIP (3191 K)

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

TIDCFI1.ZIP (539 K)

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

TIDRZU8.PDF (439 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)

LM5022-Q16-60V Wide Vin, current mode boost, SEPIC and Flyback controller, AEC-Q100 qualified

Data sheet: PDF | HTML
Shunt voltage references

ATL431LILow-IQ programmable shunt regulator offered in an ultra-small DQN package

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report Compact Isolated DC-DC Flyback Reference Design Jun. 10, 2019

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