RF generator with reduced size and weight
First Claim
1. A radio frequency (RF) generator module, comprising:
- a first half bridge including first and second power transistors;
a second half bridge including first and second power transistors;
an output node coupling the first and second half bridges and RF signals to a load;
positive and negative rails coupled to a power source;
a first blocking capacitor provided between the positive rail and the load;
a second blocking capacitor provided between the negative rail and the load; and
an offline rectification circuit configured receive an alternating current (AC) from an AC power source and output a direct current (DC) to the first and second bridges, wherein the first and second blocking capacitors are configured to isolate the load from the AC power source.
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Accused Products
Abstract
A radio frequency (RF) generator comprises a first half bridge including first and second power transistors; a second half bridge including first and second power transistors; an output node coupling the first and second half bridges and RF signals to a load; positive and negative rails coupled to a power source; a first blocking capacitor provided between the positive rail and the load; a second blocking capacitor provided between the negative rail and the load; and an offline rectification circuit configured receive an alternating current (AC) from an AC power source and output a direct current (DC) to the first and second bridges, wherein the first and second blocking capacitors are configured to isolate the load from the AC power source.
18 Citations
19 Claims
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1. A radio frequency (RF) generator module, comprising:
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a first half bridge including first and second power transistors;
a second half bridge including first and second power transistors;
an output node coupling the first and second half bridges and RF signals to a load;
positive and negative rails coupled to a power source;
a first blocking capacitor provided between the positive rail and the load;
a second blocking capacitor provided between the negative rail and the load; and
an offline rectification circuit configured receive an alternating current (AC) from an AC power source and output a direct current (DC) to the first and second bridges, wherein the first and second blocking capacitors are configured to isolate the load from the AC power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A radio frequency (RF) generator module, comprising:
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a first half bridge including first and second power transistors;
a second half bridge including first and second power transistors;
an output node coupling the first and second half bridges and RF signals to a load;
positive and negative rails coupled to a power source;
a first blocking capacitor provided between the positive rail and the load;
a second blocking capacitor provided between the negative rail and the load;
an offline rectification circuit configured receive an alternating current (AC) from an AC power source and output a direct current (DC) to the first and second bridges; and
a heatsink including first, second, and third plates, the second plated provided between the first and second plate having a solid portion and a hollow portion, the hollow portion of the second plate defining a coolant area, wherein the first and second blocking capacitors are configured to isolate the load from the AC power source. - View Dependent Claims (15, 16, 17)
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18. A radio frequency (RF) generator module, comprising:
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a first half bridge including first and second power transistors;
a second half bridge including first and second power transistors;
an output node coupling the first and second half bridges and RF signals to a load;
positive and negative rails coupled to a power source;
a first blocking capacitor provided between the positive rail and the load;
a second blocking capacitor provided between the negative rail and the load;
an offline rectification circuit configured receive an alternating current (AC) from an AC power source and output a direct current (DC) to the first and second bridges;
a heatsink including first, second, and third plates, the second plated provided between the first and second plates and having a solid portion and a hollow portion, the hollow portion of the second plate defining a coolant area; and
a voltage regulator coupled to the rectification circuit and is configured to provide a given voltage to the first and second half bridges, wherein the first and second blocking capacitors are configured to isolate the load from the AC power source, and wherein the RF generator module is configured to control output power to the load by controlling phase displacements of the power transistors. - View Dependent Claims (19)
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Specification