Automotive vehicle inverter control apparatus

An automotive vehicle inverter control apparatus comprising:

• a pair of U-phase power semiconductor elements connected to a U-phase winding of an electric motor;
• a pair of V-phase power semiconductor elements connected to a V-phase winding of the electric motor;
• a pair of W-phase power semiconductor elements connected to a W-phase winding of the electric motor;
• a pair of U-phase drive circuits configured to drive the U-phase power semiconductor element;
• a pair of V-phase drive circuits configured to drive the V-phase power semiconductor element;
• a pair of W-phase drive circuits configured to drive the W-phase power semiconductor element;
• a U-phase side direct current power source configured to supply power only to the pair of U-phase drive circuit via a U-phase side power supply path;
• a V-phase side direct current power source separate and distinct from the U-phase side direct current power source, the V-phase side direct current power source configured to supply power only to the pair of V-phase drive circuit via a V-phase side power supply path;
• and
• a W-phase side direct current power source separate and distinct from the U-phase side direct current power source and the V-phase side direct current power source, the W-phase side direct current power source configured to supply power source only to the pair of W-phase drive circuit via a W-phase side power supply path, and
• wherein each of the U-phase side direct current power source, the V-phase side direct current power source, and the W-phase side direct current power source includes a power supply unit having a transformer unit, a power source IC, a switching element having a gate connection that is solely connected to the power source IC, and a capacitor, and
• wherein each of the power supply unit is connected to the respective U-phase side power supply path, V-phase side power supply path, and the W-phase side power supply path.