Patent ID: 8044617

Claim:
A motor control circuit for controlling a motor, comprising: a brake circuit, for making a first node and a second node of the motor form a short-circuit loop, so as to make the motor enter a braking state; and a control circuit, for detecting residual energy of the motor in the brake state, and for making the motor exit the braking state when the residual energy conforms to a predetermined criterion; wherein the brake circuit comprises: a first transistor, coupled to the first node; a second transistor, coupled to the second node; a first resistor, connected to the first transistor in series; and a second resistor, connected to the second transistor in series; wherein the short-circuit loop is formed when the first and second transistors become conductive, and the residual energy is determined according to at least one of a voltage drop across the first resistor and a voltage drop across the second resistor.