ADJUSTMENT CIRCUIT AND ELECTRONIC DEVICE THEREOF

摘要

An electronic device includes a power supply, a switching element, and an adjustment circuit. The power supply provides a working voltage to the adjustment circuit. The switching element is capable of generating heat when operating. The adjustment circuit is connected between the power supply and the switching element, and includes a detection unit and a control unit which are parallel connected between the power supply and the switching element. The detection unit detects the heat generated by the switching element and outputs a detected voltage. The control unit adjusts the duty cycle of the PWM signal based on the detected voltage.

主权项

1. An electronic device, comprising:
a power supply for providing a working voltage; a switching element capable of generating heat when operating; and an adjustment circuit connected between the power supply and the switching element, capable of generating a pulse width modulation (PWM) signal to drive the switching element to work; wherein the adjustment circuit powered by the working voltage comprises a detection unit and a control unit which are connected between the power supply and the switching element; the detection unit detects the heat generated by the switching element and outputs a detected voltage; the control unit adjusts the duty cycle of the PWM signal based on the detected voltage.