Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1992-04-28
1993-11-23
Wambach, Margaret R.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307270, 307282, 307543, 307572, 307268, 328113, 328223, H03K 1756, H03K 501
Patent
active
052647366
ABSTRACT:
An efficient power MOSFET resonant gate drive circuit having a large coupled inductor between and in series with two switching transistors. The inductor prevents cross-conduction from the power bus through the drive transistors as may be caused by simultaneous turn-on due either to switching delays or single-event-upset-radiation from energetic cosmic rays. In either case, the inductor presents a high impedance for current that tries to flow through both transistors simultaneously. A center tap on the inductor is connected to the gate of the power MOSFET. An equivalent inductance resonates with the equivalent capacitance of the gate of the power MOSFET providing fast turn-on of the power MOSFET. During turn-off of the power MOSFET, one drive transistor is switched-off and the other drive transistor is switched-on. The voltage generated by the coupled inductor exceeds the magnitude of the input voltage causing a diode within the off-transistor to turn-on and return energy back to the power source, thereby further increasing the circuit efficiency.
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Dawson Walter F.
Raytheon Company
Sharkansky Richard M.
Wambach Margaret R.
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