Integrated gate signal and power circuit including an isolated DC-DC converter that includes a non-isolated DC-DC converter

An integrated gate signal and power circuit comprising:

• an isolated DC-DC converter comprising:
• a primary side including a non-isolated DC-DC converter including a first inductor, a switch controller, and first and second switches, wherein the non-isolated DC-DC converter is configured to receive an input voltage;
• and
• a secondary side including a second inductor, a full wave rectifying circuit, and a filter circuit;
• wherein
• the second inductor in the secondary side is coupled with the first inductor in the primary side to define a transformer;
• and
• the secondary side is electrically isolated from the primary side by the transformer and is configured to output a DC output voltage based on a voltage induced in the second inductor of the transformer;
• a boost converter configured to receive the DC output voltage output by the secondary side of the isolated DC-DC converter;
• a voltage generator configured to generate positive and negative power supply voltages from an output voltage received from the boost converter;
• and
• a switching circuit configured to selectively connect either of the positive or the negative power supply voltages to an output;
• wherein
• the switching circuit is controlled by a third inductor that is in the secondary side and that is coupled with the first inductor in the primary side to define an additional transformer.