Apparatus for controlled overshoot in a RF generator
First Claim
1. A radio-frequency (RF) generator, comprising:
- A RF power amplifier; and
A direct-current (DC) power supply electrically connected with the RF power amplifier to supply electrical power to the RF power amplifier, the DC power supply including;
a primary DC power supply;
an auxiliary DC power supply;
a half-bridge circuit that, in a first switching state, electrically connects, in series, the auxiliary DC power supply with the primary DC power supply and that, in a second switching state, electrically disconnects the auxiliary DC power supply from the primary DC power supply; and
a control circuit that places the half-bridge circuit in the first switching state for a first period of time and that places the half-bridge circuit in the second switching state for a second period of time to produce a controlled overshoot in the power produced by the RF generator throughout the first period of time;
wherein the first and second periods of time are followed by zero, one, or a plurality of additional periods of time during which the RF generator produces a different amount of power than during the first and second periods of time.
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Accused Products
Abstract
A radio-frequency (RF) generator is provided that produces a controlled overshoot. One embodiment includes a RF power amplifier and a direct-current (DC) power supply that includes a primary DC power supply, an auxiliary DC power supply, a half-bridge circuit, and a control circuit. The half-bridge circuit, in a first switching state, electrically connects, in series, the auxiliary DC power supply with the primary DC power supply and, in a second switching state, electrically disconnects the auxiliary DC power supply from the primary DC power supply. The control circuit places the half-bridge circuit in the first switching state for a first period of time and places the half-bridge circuit in the second switching state for a second period of time to produce a controlled overshoot in the power produced by the RF generator throughout the first period of time.
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Citations
18 Claims
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1. A radio-frequency (RF) generator, comprising:
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A RF power amplifier; and A direct-current (DC) power supply electrically connected with the RF power amplifier to supply electrical power to the RF power amplifier, the DC power supply including; a primary DC power supply; an auxiliary DC power supply; a half-bridge circuit that, in a first switching state, electrically connects, in series, the auxiliary DC power supply with the primary DC power supply and that, in a second switching state, electrically disconnects the auxiliary DC power supply from the primary DC power supply; and a control circuit that places the half-bridge circuit in the first switching state for a first period of time and that places the half-bridge circuit in the second switching state for a second period of time to produce a controlled overshoot in the power produced by the RF generator throughout the first period of time; wherein the first and second periods of time are followed by zero, one, or a plurality of additional periods of time during which the RF generator produces a different amount of power than during the first and second periods of time. - View Dependent Claims (2, 3, 4, 5)
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6. A radio-frequency (RF) generator, comprising:
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A RF power amplifier; and A direct-current (DC) power supply electrically connected with the RF power amplifier to supply electrical power to the RF power amplifier, the DC power supply including; a primary DC power supply; an auxiliary DC power supply; a half-bridge circuit that, in a first switching state, electrically connects, in series, the auxiliary DC power supply with the primary DC power supply and that, in a second switching state, electrically disconnects the auxiliary DC power supply from the primary DC power supply; and a control circuit that includes a non-transitory, tangible, machine-readable medium encoded with instructions to perform a method, the method including; placing the half-bridge circuit in the first switching state for a first period of time to produce a controlled overshoot in the power produced by the RF generator throughout the first period of time; and placing the half-bridge circuit in the second switching state for a second period of time; wherein the first and second periods of time are followed by zero, one, or a plurality of additional periods of time during which the RF generator produces a different amount of power than during the first and second periods of time. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A radio-frequency (RF) generator, comprising:
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means for amplifying RF power; means for supplying direct-current (DC) power to the means for amplifying RF power, the means for supplying DC power including primary means for supplying DC power and auxiliary means for supplying DC power; means for switching that, in a first switching state, electrically connects, in series, the auxiliary means for supplying DC power with the primary means for supplying DC power and that, in a second switching state, electrically disconnects the auxiliary means for supplying DC power from the primary means for supplying DC power; and means for controlling the means for switching that places the means for switching in the first switching state for a first period of time and that places the means for switching in the second switching state for a second period of time to produce a controlled overshoot in the power produced by the RF generator throughout the first period of time, and is further configured to cause the first and second periods of time are followed by zero, one, or a plurality of additional periods of time during which the RF generator produces a different amount of power than during the first and second periods of time. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification