By using a high-frequency power switch and inductor-capacitor energy storage, the input voltage is stably converted into a constant output voltage to power components such as the motherboard, MCU, sensors, and screen.

1. Constant Voltage Closed-Loop Control: Real-time sampling of the output voltage and adjustment of the switch duty cycle ensure that the output voltage remains constant despite load and input voltage fluctuations.

2. High-Efficiency Energy Conversion: Extremely low loss compared to linear LDOs, making it the preferred choice for high-current power supply.

3. Integrated Protection: Overcurrent, overvoltage, overheat, short circuit, and soft-start protection to prevent downstream device burnout.

4. Microstepping Topology: Buck (high voltage to low voltage), Boost (low voltage to high voltage), and Buck-Boost (stable voltage even with wide input fluctuations).