Patent ID: 7064588
Filing Date: 2006-06-20
Classification: H02M

Abstract:
1. A half-bridge inverter of dual N-MOS with a push/pull control chip, connected to a primary winding of a transformer for converting DC power into AC power, the half-bridge inverter comprising: a push/pull control chip having two output terminals; a driver having two input terminals, two output terminals and a high-frequency transformer, wherein the two input terminals of the driver connect to the output terminals of the push/pull control chip, the driver being controlled by the push/pull control chip; a half-bridge switch assembly consisting of a first N-MOS FET and a second N-MOS FET, wherein the first and the second N-MOS FETs connect to the two output terminals of the driver, respectively, through a control terminal to convert DC power into AC power by the driver, said high-frequency transformer including a first input terminal, a second input terminal, a first output terminal and a second output terminal, wherein the first input terminal of the high-frequency transformer connects to an output terminal of the push/pull control chip through a RC serial circuit, the second input terminal of the high-frequency transformer connects to the reference terminal, the first output terminal of the high-frequency transformer connects to the control terminal of the first N-MOS FET through a first resistor, and the second output terminal of the high-frequency transformer connects to the primary winding of the transformer; a second resistor connects to the other output terminal of the push/pull control chip and the control terminal of the second N-MOS FET; a damper connected between the first output terminal and the second output terminal of the high-frequency transformer; and a diode connected in parallel with the second resistor.