B6+3 bridge for motor control and series pass regulation in an integrated starter generator application

A system comprising:

• an integrated motor generator configured to operate in motor mode and in generator mode;
• a half-bridge circuit, comprising a high-side switch coupled to a low-side switch, wherein the half-bridge circuit is:
• coupled to the integrated motor generator at the switch node of the half-bridge circuit;
• and
• configured to control the operation of the integrated motor generator;
• a control circuit comprising:
• a switch, separate from the half-bridge circuit and arranged to control current to the half-bridge circuit, the switch comprising a gate terminal and a current channel including a first terminal and a second terminal;
• a switch driver circuit comprising a control input, a first gate control output terminal, a second gate control output terminal and a third gate control output terminal wherein:
• the first gate control output electrically connects to the gate terminal of the switch,
• the second gate control output terminal is configured to control a gate terminal of a half-bridge circuit high-side switch,
• the third gate control output terminal is configured to control a gate terminal of a half-bridge circuit low-side switch, and
• the first terminal of the switch connects to a current channel of the high-side switch on a side of the high-side switch opposite the switch node of the half-bridge circuit;
• and
• processing circuitry operatively coupled to the half-bridge circuit and the control circuit and configured to receive sense signals from the half-bridge circuit and the integrated motor generator.