Driving circuit for low voltage drop bridge rectifier and method thereof

A method for driving a bridge rectifier, comprising:

• providing an AC signal to the bridge rectifier through a first input and a second input;
• providing power for driving a first low side switch through the second input;
• providing a first driving signal to the first low side switch, wherein the first driving signal is limited to less than a first predetermined driving voltage;
• providing power for driving a second low side switch through the first input;
• and
• providing a second driving signal to the second low side switch, wherein the second driving signal is limited to less than a second predetermined driving voltage and wherein the first driving signal equals the first predetermined driving voltage when a voltage at the second input is higher than the first predetermined driving voltage.

A driving circuit for a bridge rectifier comprising a first low side switch and a second low side switch, comprising:

• a first output terminal, configured to provide a first driving signal coupled to a control terminal of the first low side switch, and wherein the first driving signal is limited to less than a first predetermined driving voltage;
• a second output terminal, configured to provide a second driving signal coupled to a control terminal of the second low side switch, and wherein the second driving signal is limited to less than a second predetermined driving voltage;
• a first driving switch, having a control terminal, a first terminal coupled to a first input of the bridge rectifier, and a second terminal configured to provide the first driving signal;
• and
• a second driving switch, having a control terminal, a first terminal coupled to a second input of the bridge rectifier, and a second terminal configured to provide the second driving signal;
• wherein the first predetermined driving voltage is responsive to a voltage at the control terminal of the first driving switch;
• and
• wherein the second predetermined driving voltage is responsive to a voltage at the control terminal of the second driving switch and wherein the driving circuit further comprising a bias voltage, wherein the control terminal of the first driving switch is coupled to receive the bias voltage, and wherein the control terminal of the second driving switch is coupled to receive the bias voltage.