A motor driving circuit receives a control pulse signal pulse-width modulated according to a target rotational speed, and drives a fan motor. A first semiconductor chip is coupled to a surface of the substrate. A selection of a program is received.
Algorithmically generated prior art
A motor driving circuit receives a control pulse signal pulse-width modulated according to a target rotational speed, and drives a fan motor. A first semiconductor chip is coupled to a surface of the substrate. A selection of a program is received.