TP5100 Charging Parameters Explained

The TP5100 Lithium Battery Charging Module is a versatile and widely used solution for charging and protecting single-cell lithium-ion or lithium-polymer batteries. It offers a range of features that make it ideal for various applications, including overcharge protection, over-discharge protection, short-circuit protection, and more. In this comprehensive guide, we'll delve into the TP5100 charging parameters to help you understand how to use this module effectively.

Introduction to TP5100 Charging Parameters

Understanding the TP5100 charging parameters is crucial for effectively managing the charging process. These parameters determine how the module charges and protects your lithium-ion or lithium-polymer batteries.


Charging Voltage (CV)

The charging voltage is the voltage at which the TP5100 module charges the battery during the constant voltage (CV) stage. For a TP5100 module, the default CV is typically around 4.2 volts for lithium-ion batteries and 4.35 volts for lithium-polymer batteries.


CV Setting

You can adjust the CV setting by modifying the resistor values on the module. This allows you to set the module to charge your battery to a specific voltage.


Charging Current (CC)

The charging current is the rate at which the TP5100 module charges the battery during the constant current (CC) stage. The module allows you to set the charging current to either 1A or 2A by shorting or leaving the PROG pin open, respectively.


CC Setting

The choice between 1A and 2A depends on the specific requirements of your battery and application. Setting the CC ensures that the battery is charged at a safe and optimal rate.


Charging Termination Current (C-CT)

The charging termination current is the current level at which the TP5100 module stops the charging process during the constant voltage (CV) stage. It acts as a safety feature to prevent overcharging.


C-CT Setting

You can modify the termination current setting by selecting appropriate resistor values. This allows you to set a specific C-CT suitable for your battery type.


Charge Enable (CE) Pin

The CE pin is used to enable or disable the charging process. Shorting this pin to BAT- enables charging, while leaving it open disables charging. It provides control over when to initiate or halt the charging process.


Temperature Sensing

The TP5100 module is equipped with a temperature sensor (TS pin) that can be connected to an external thermistor for temperature monitoring. Temperature sensing is crucial to ensure safe charging, especially for lithium-polymer batteries, as they are more sensitive to temperature variations.


Overcharge Protection

The TP5100 module offers robust overcharge protection to safeguard your batteries from excessive voltage levels. It automatically terminates the charging process when the battery reaches the preset CV.


Over-Discharge Protection

In addition to overcharge protection, the module includes over-discharge protection. It ensures that your battery doesn't discharge below a safe voltage level, prolonging battery life.


Short-Circuit Protection

The TP5100 module also has built-in short-circuit protection. If a short circuit occurs during the charging process, the module will disable the charging to prevent any damage.


Conclusion

The TP5100 charging parameters are pivotal in determining how this module interacts with your lithium-ion or lithium-polymer batteries. Understanding these parameters and their settings is essential for safe and efficient battery charging. 

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