An electronic device includes a device controller and a microprocessor. The device controller is coupled to a device for controlling the device. The microprocessor is coupled to the device controller. The microprocessor obtains information regarding an amount of power consumption of the electronic device and dynamically determines an amount of current provided to the device according to the amount of power consumption. When the microprocessor determines that the amount of power consumption is greater than a threshold, the microprocessor determines to decrease the amount of current provided to the device.