Maximum Power Point Tracking Algorithm for Low Power Solar Battery Charging Reference Design

(ACTIVE) TIDA-01556

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Key Document

Description

This reference design is a software implementation of a basic maximum power point tracking algorithm for a single-cell battery charging system using a solar panel input. This design removes the requirement for extra circuitry and complex firmware by using integrated features of the charger to achieve maximized charging current all through a simple I²C-based control scheme.

Features
  • Integrated 7-bit ADC to monitor input voltage, battery voltage, and charge current
  • Adjustable input voltage limit with 100-mV resolution
  • High charge efficiency with 93% at 2A and 91% at 3A
  • Wide input voltage operating range from 3.9V to 14V
  • Integrated reverse blocking FET for solar input protection
  • Input high-impedance mode for open circuit voltage measurement

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Schematic/Block Diagram

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Design Guide

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
BQ25895  Single Cell 5A Fast Charger MaxCharge™ Technology for High Input Voltage and 3.1A Boost  Battery management  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR4133  16 MHz Ultra-Low-Power Microcontroller with 16 KB FRAM, 2 KB SRAM, 60 IO, 10-bit ADC, LCD, IR Logic  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
BQ25895 Download Download
MSP430FR4133 Download
Download Download
Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Datasheet (2)
Title Abstract Type Size (KB) Date Views
PDF 1820 29 Aug 2018
PDF 1817 04 May 2018
User guides (3)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 679 28 Aug 2017 0
PDF 2101 17 Jan 2017 0
PDF 2994 24 Nov 2015 0
Design files (1)
Title Abstract Type Size (KB) Date Views
PDF 74 08 Jan 2018 0
Related Tools & Software

Reference Designs  ( 1 )

Design Kits & Evaluation Modules  ( 2 )

Name Part Number Tool Type
BQ25895 Complete Charger Evaluation Module  BQ25895EVM-664  Evaluation Modules & Boards 
MSP430FR4133 LaunchPad Development Kit  MSP-EXP430FR4133  Evaluation Modules & Boards 

Development Tools (1)

Name Part Number Tool Type
Code Composer Studio (CCS) Integrated Development Environment (IDE)  CCSTUDIO  SW Development Tools, IDEs, Compilers 

Software (1)



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