| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor driving equipment, which is simple in structure and thereby can be manufactured easily allowing the structure of a DC brushless motor to be simplified, thereby reducing its size. SOLUTION: In a motor driving equipment for a DC brushless motor which does not use a current detector and the like, a metal substrate 41 mounted with heat-generating elements which constitute an inverter main circuit and a resin substrate 1 mounted with an inverter control circuit for the inverter main circuit and with a current phase detecting circuit are connected electrically and molded integrally and then the inverter main circuit, the inverter control circuit, and the current phase detecting circuit are integrated into a monolithic structure on a circuit board 42. Due to this structure, the area of the metal substrate 41 can be made minimum, just sufficient for mounting the heating elements and thereby the structure of the motor driving equipment can be simplified, the size can be reduced, and the manufacturing cost can be reduced. |
