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20W SEPIC Low-Cost Lead Acid Battery Charger Reference Design
PMP10081
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Key Document

Description

The PMP10081 reference design shows a simple and low-cost solution of a lead acid battery charger. The input voltage range is from 9V to 36V and the maximum output voltage is 13.8V, which is sufficient for a six-cell lead acid battery with a charge current up to 1.5A.

Features
  • Built and tested
  • Small part count
  • Low-cost
  • Simple solution

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP10081.1
(Output Voltage 1)
Vin (Min) (V)9
Vin (Max) (V)36
Vout (Nom) (V)13.8
Iout (Max) (A)1.5
Output Power (W)20.7
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologySepic- CCM

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18563Q5A  60V, N ch NexFET MOSFET™, single SON5x6, 6.8mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
TLC272  Dual Single Supply Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS40210  4.5~52V Wide Input Range Boost/SEPIC/Flyback DC-DC Controller  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18563Q5A VSONP (DQJ)| 8 Download
TLC272 Download Download
Download -
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TPS40210 Download Download
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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 1364 22 Sep 2015
Design files (3)
Title Type Size (KB) Date
ZIP 39 22 Sep 2015
PDF 82 22 Sep 2015
PDF 144 22 Sep 2015

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