PMP20852

3W Isolated Triple Output Flyback Converter Reference Design

PMP20852

Design files

Overview

PMP20852 is an isolated flyback converter reference design with primary-side regulation using the UCC2805 controller IC. There are three independently isolated outputs on the secondary side, each of which use LP2951 linear regulators to provide a well-regulated 16V output on each of the three rails. The design accepts an input voltage of 10Vin to 14Vin (12Vin Nominal) and provides three isolated 16Voutput rails capable of supplying 65mA each of continuous current to the load. The design is built on a 2-layer PCB with 1oz copper on each layer.

Features
  • Independently isolated triple output rails
  • Precision regulated outputs using LDOs
  • Primary-side regulated flyback achieves regulation without the need for an optocoupler
Output voltage options PMP20852.1 PMP20852.2 PMP20852.3
Vin (Min) (V) 10 10 10
Vin (Max) (V) 14 14 14
Vout (Nom) (V) 16 16 16
Iout (Max) (A) .065 .065 .065
Output Power (W) 1.04 1.04 1.04
Isolated/Non-Isolated Isolated Isolated Isolated
Input Type DC DC DC
Topology Flyback- Non Sync Flyback- Non Sync Flyback- Non Sync
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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.

TIDUDX2.PDF (2443 K)

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

TIDRTV1.PDF (199 K)

Detailed schematic diagram for design layout and components

TIDRTV2.PDF (33 K)

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

TIDRTV3.PDF (143 K)

Detailed overview of design layout for component placement

TIDRTV5.ZIP (569 K)

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

TIDCE33.ZIP (425 K)

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

TIDRTV4.PDF (658 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)

UCC280512V, 1A low power BICMOS 1MHz current mode PWM with 4.1V/3.6V UVLO and 50% duty cycle, -40C to 12

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

LP2951100-mA, 30-V, low-dropout voltage regulator with power good & enable

Data sheet: PDF | HTML
MOSFETs

CSD18543Q3A60-V, N channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 9.9 mOhm

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP20852 Test Results Nov. 30, 2017

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