The power supply used in a mobile charger is a Switched Mode Power Supply (SMPS).
Here's a breakdown:
-
Switched Mode Power Supply (SMPS): This type of power supply is efficient in converting AC voltage from the mains to a lower DC voltage suitable for charging mobile phone batteries.
-
Constant Voltage (CV) and Constant Current (CC): The SMPS in a mobile charger provides both constant voltage and constant current. This is important for safe and efficient battery charging.
- Constant Current (CC): Initially, the charger provides a constant current to rapidly charge the battery.
- Constant Voltage (CV): As the battery reaches a certain voltage level, the charger switches to constant voltage mode, maintaining that voltage while the current gradually decreases until the battery is fully charged.
-
Typical Output: Mobile chargers generally provide a DC voltage of 5V, with a current of either 0.5A or 1A. However, with newer fast charging technologies, the voltage and current might be higher (e.g., 9V/2A, 12V/1.5A, or even variable voltage and current).
In summary, the Switched Mode Power Supply (SMPS) inside a mobile charger intelligently regulates the voltage and current to ensure the mobile battery receives the power it needs to charge safely and efficiently.
