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Power/Alternative Energy  

A practical high-voltage charger solution with existing charger IC

Posted: 06 Apr 2011     Print Version  Bookmark and Share

Keywords:Li-ion  Li-polymer 

This application report shows how to modify the existing bq24610 integrated Li-ion or Li-polymer switch-mode battery charge controller to allow it to charge higher cell count battery packs. It covers the bq24610 basics and explains the design requirements to modify the charger for the high-voltage application.

The bq24610 is an integrated Li-ion or Li-polymer switch-mode, battery charge controller. It offers a constant-frequency, synchronous switching, PWM controller with high-accuracy charge current and voltage regulation. Other features include charge preconditioning, termination, adapter current regulation, and charge status monitoring. The bq24610 charges the battery in three phases: preconditioning, constant current, and constant voltage. The charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup. The bq24610 automatically restarts the charge cycle if the battery voltage falls below an internal threshold.

View the PDF document for more information.





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