A multilayer circuit board in which wirings are arranged so that the inductance thereof is reduced is provided. A ground wiring 22 and a power source wiring 33 which are provided in a multilayer circuit board 100 are arranged so that most of the wirings are superposed vertically along a direction of a longer side of the circuit board, and since currents flow in an opposite direction to each other in the portions which are superposed, magnetic fields generated by the currents so flowing are canceled by each other. Similarly, a W-phase wiring 11, a V-phase wiring 21 and a W-phase wiring 31 are also arranged so that the wirings are partially superposed along their longer side direction vertically, and magnetic fields generated by currents flowing in the portions which are superposed vertically are canceled by one another. By this, the inductance of the wirings can be reduced by increasing a mutual inductance between these wirings.
MULTILAYER CIRCUIT BOARD, AND MOTOR-DRIVING CIRCUIT BOARD
MEHRSCHICHTIGE LEITERPLATTE UND MOTORANTRIEBSLEITERPLATTE
CARTE IMPRIMÉE MULTICOUCHE ET CARTE IMPRIMÉE D'ENTRAÎNEMENT DE MOTEUR
2017-12-27
Patent
Electronic Resource
English
IPC: | H05K PRINTED CIRCUITS , Gedruckte Schaltungen / B62D MOTOR VEHICLES , Motorfahrzeuge / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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