bq24650 Battery Charge Controller for Solar Power

TI's high efficiency, synchronous switch-mode charge controller - solar battery charger

Image of Texas Instruments' bq24650 Battery Charge Controller for Solar PowerTexas Instruments' bq24650EVM evaluation module assists users in evaluating the bq24650 synchronous battery charger. The bq24650 is a highly integrated switch-mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulation loop lowers the charge current so that the solar panel can provide maximum power output. The bq24650 offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, charge termination, and charge status monitoring.The bq24650 charges the battery in three phases: pre-conditioning, constant current and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. 

  • Maximum Power Point Tracking (MPPT) capability by input voltage regulation
  • Programmable MPPT setting
  • 5 V - 28 V input solar panel
  • 600 kHz NMOS-NMOS synchronous buck controller
  • Resistor programmable float voltage
  • Accommodates Li-Ion/polymer, LiFePO4, lead acid chemistries
  • Accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±0.6% input voltage regulation
  • High Integration
    • Internal loop compensation and digital soft start
  • Safety
    • Input over-voltage protection
    • Battery temperature sensing and absent detection
    • Thermal shutdown
  • Charge status outputs for LED or host processor
  • Charge enable on MPPSET pin
  • Solar powered applications
  • Remote monitoring stations
  • Portable handheld instruments
  • 12 V to 24 V automotive systems
  • Current-limited power source


ImageManufacturer Part NumberDescriptionBattery ChemistryAvailable Quantity
BQ24650RVAT datasheet linkIC SYNC SW-MODE BAT CHRGR 16VQFNBQ24650RVATIC SYNC SW-MODE BAT CHRGR 16VQFNMulti-Chemistry5724 - Immediate
4500 - Factory Stock
BQ24650RVAT product page link

Evaluation Module

ImageManufacturer Part NumberDescriptionEmbeddedUtilized IC / PartAvailable Quantity
BQ24650EVM-639 datasheet linkEVAL MODULE FOR BQ24650BQ24650EVM-639EVAL MODULE FOR BQ24650NoBQ2465018 - Immediate
58 - Factory Stock
BQ24650EVM-639 product page link
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Published: 2013-07-02