On-board chargers refer to on-board chargers that are conventionally powered by car batteries (12V for cars, 24V for trucks), and are widely used in the field of lithium battery charging for various portable and handheld devices.
Such as: mobile phone, PDA, GPS, etc.; the car charger should not only consider the actual needs of lithium battery charging (constant voltage CV, constant current CC, overvoltage protection OVP), but also take into account the harsh environment of the car battery (transient peak voltage, system switching noise interference, EMI, etc.); therefore, the power management IC selected for the car charger solution must meet the following requirements: high-voltage, high-efficiency, high-reliability, and low-frequency switching power chips that are conducive to EMI design.