Complete Guide to Car Chargers
The car charger is mainly used for charging lithium batteries in various portable and handheld devices, such as mobile phones, PDAs, GPS, etc., powered by car batteries (12V for cars, 24V for trucks). It needs to consider the actual charging requirements of lithium batteries (constant voltage CV, constant current CC, overvoltage protection OVP), as well as the harsh environment of the car's battery (transient peak voltage, system switch noise interference, EMI, etc.). Therefore, the selected power management IC for the car charger solution must meet the following criteria: high voltage resistance, high efficiency, high reliability, and low frequency (beneficial for EMI design), which is commonly known as "robust" in simple terms.
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