Inverting buck-boost converter drive circuit and method

A circuit, comprising:

• a power transistor having a drain terminal coupled to an input node and a source terminal coupled to an output node;
• a drive circuit having an input configured to receive a drive signal and an output configured to output a first control signal;
• an inverter circuit configured to invert the first control signal and generate a second control signal;
• a first capacitor having a first terminal coupled to receive the first control signal from the drive circuit and a second terminal configured to generate a first boosted control signal for application to a gate of said power transistor;
• a first transistor having a drain terminal directly connected to the gate of the power transistor and a source terminal directly connected to the source terminal of the power transistor, said first transistor having a gate terminal;
• and
• a second capacitor having a first terminal coupled to receive the second control signal and a second terminal configured to generate a second boosted control signal for application to the gate terminal of the first transistor.

A circuit, comprising:

• a power transistor having a drain terminal connected to an input node, a source terminal connected to an output node, and a gate terminal;
• a drive circuit configured to generate a first control signal and a second control signal that is a logical inversion of the first control signal;
• a first boot capacitor configured to receive the first control signal and generate a first boosted control signal that is applied to the gate terminal of said power transistor;
• a first transistor having a drain terminal connected to the gate of the power transistor, a source terminal connected to the source terminal of the power transistor, and a gate terminal;
• and
• a second boot capacitor configured to receive the second control signal and generate a second boosted control signal that is applied to the gate terminal of said first transistor.