PMP30047

Two Elements Lead-Acid 16V…32V@2A Battery Charger from 170VAC to 270VAC Reference Design

PMP30047

Design files

Overview

A quasi-resonant isolated flyback is employed to charge two lead-acid battery elements, starting from high-line mains. The converter accepts two external signals (referred to secondary side) to provide the reference voltages, which set output voltage and current. The converter shows good wide-range efficiency thanks to valley-switching modulation.

Features
  • Low cost, low EMI isolated flyback converter thanks to valley switching
  • Compact solution (small footprint: only 60mm x 60mm) supplies 64W maximum with almost flat efficiency (78%...89%) from 0.1A to 2A
  • Employs a depletion-mode startup FET to further reduce standby lossses
Output voltage options PMP30047.1
Vin (Min) (V) 170
Vin (Max) (V) 270
Vout (Nom) (V) 32
Iout (Max) (A) 2
Output Power (W) 64
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- Quasi Resonant

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.

TIDUCB7.PDF (1098 K)

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

TIDRNL6.PDF (493 K)

Detailed schematic diagram for design layout and components

TIDRNL7.PDF (145 K)

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

TIDRNL8.PDF (808 K)

Detailed overview of design layout for component placement

TIDRNM0.ZIP (711 K)

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

TIDCCN0.ZIP (54 K)

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

TIDRNL9.PDF (628 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Flyback controllers

LM5023AC-DC quasi-Resonant current mode PWM controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
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LMP84804 to 76V current sense amplifier

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General-purpose op amps

LM2904Dual, 26-V, 700-kHz operational amplifier

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Shunt voltage references

TL431Adjustable precision shunt regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Test report PMP30047 Test Results Sep. 14, 2016

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