System for enabling a full-bridge switch-mode amplifier to recover all reactive energy
First Claim
Patent Images
1. An RF power supply, comprising:
- an amplifier comprising means for producing an alternating voltage and for recovering reactive energy produced by a capacitive load;
a direct current (dc) power source to provide dc power to said amplifier; and
a frequency generator to control the frequency of said alternating voltage produced by said amplifier.
2 Assignments
0 Petitions
Accused Products
Abstract
A full-bridge amplifier that is able to provide power to all types of loads. The fill-bridge amplifier according to the present invention recovers reactive energy produced by capacitive loads instead of having the reactive energy be dissipated in the switches of the amplifier, thereby causing device failure. In one embodiment, two inductors and four diodes are added to the conventional full-bridge topology. Furthermore, a full-bridge amplifier according to an embodiment of the present invention is able to operate over a broad-band of radio frequencies.
94 Citations
52 Claims
-
1. An RF power supply, comprising:
-
an amplifier comprising means for producing an alternating voltage and for recovering reactive energy produced by a capacitive load; a direct current (dc) power source to provide dc power to said amplifier; and a frequency generator to control the frequency of said alternating voltage produced by said amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 33, 34, 35, 36)
-
-
19. A full-bridge amplifier comprising:
-
a first, second, third, and fourth switch; a first, second, third, and fourth diode, each diode having a cathode and an anode; and a first and second inductor, wherein said first switch is coupled between a power supply terminal and a first common node, said second switch is coupled between said first common node and a common reference node, said third switch is coupled between said power supply terminal and a second common node, said fourth switch is coupled between said second common node and said common reference node, said cathode of said first diode is coupled to said power supply terminal, and said anode of said first diode is coupled to a third common node, said cathode of said second diode is coupled to said third common node, and said anode of said second diode is coupled to said common reference node, said cathode of said third diode is coupled to said power supply terminal, and said anode of said third diode is coupled to said fourth common node, said cathode of said fourth diode is coupled to said fourth common node, and said anode of said fourth diode is coupled to said common reference node, said first inductor is coupled between said first common node and said third common node, and said second inductor is coupled between said second common node and said fourth common node. - View Dependent Claims (20, 21, 22, 23, 24, 25)
-
-
26. A fill-bridge amplifier, comprising:
-
a first, second, third, and fourth switch; a first, second, third, fourth, fifth, and sixth diode, each diode having a cathode and an anode; and a first, second, third, and fourth inductor, wherein said first switch is coupled between a power supply terminal and said cathode of said first diode, said second switch is coupled between said anode of said first diode and a common reference node, said third switch is coupled between said power supply terminal and said cathode of said second diode, said fourth switch is coupled between said anode of said second diode and said common reference node, said cathode of said third diode is coupled to said power supply terminal, and said anode of said third diode is coupled to a first node, said cathode of said fourth diode is coupled to said first node, and said anode of said fourth diode is coupled to said common reference node, said cathode of said fifth diode is coupled to said power supply terminal, and said anode of said fifth diode is coupled to a second node, said cathode of said sixth diode is coupled to said second node, and said anode of said sixth diode is coupled to said common reference node, said first inductor is coupled between said first node and said cathode of said first diode, said second inductor is coupled between said first node and said anode of said first diode, said third inductor is coupled between said second node and said cathode of said second diode, and said fourth inductor is coupled between said second node and said anode of said second diode. - View Dependent Claims (27, 28, 29, 30, 31, 32)
-
-
37. An RF power supply, comprising:
-
an amplifier comprising means for producing an alternating voltage and for recovering reactive energy produced by a capacitive load; a direct current (dc) power source to provide dc power to said amplifier; and a frequency generator to control the frequency of said alternating voltage produced by said amplifier, wherein said means for producing an alternating voltage and for recovering substantially all reactive energy produced by a capacitive load comprises; a first, second, third, and fourth switch; a first, second, third, fourth, fifth, and sixth diode, each diode having a cathode and an anode; and a first, second, third, and fourth inductor, wherein said first switch is coupled between said dc power source and said cathode of said first diode, said second switch is coupled between said anode of said first diode and a common reference node, said third switch is coupled between said dc power source and said cathode of said second diode, said fourth switch is coupled between said anode of said second diode and said common reference node, said cathode of said third diode is coupled to said dc power source, and said anode of said third diode is coupled to a first node, said cathode of said fourth diode is coupled to said first node, and said anode of said fourth diode is coupled to said common reference node, said cathode of said fifth diode is coupled to said dc power source, and said anode of said fifth diode is coupled to a second node, said cathode of said sixth diode is coupled to said second node, and said anode of said sixth diode is coupled to said common reference node, said first inductor is coupled between said first node and said cathode of said first diode, said second inductor is coupled between said first node and said anode of said first diode, said third inductor is coupled between said second node and said cathode of said second diode, and said fourth inductor is coupled between said second node and said anode of said second diode. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
-
-
45. An RF power supply, comprising:
-
an amplifier comprising means for producing an alternating voltage and for recovering reactive energy produced by a capacitive load; a direct current (dc) power source to provide dc power to said amplifier; and a frequency generator to control the frequency of said alternating voltage produced by said amplifier, wherein said means for producing an alternating voltage and for recovering reactive energy produced by a capacitive load comprises; a first, second, third, and fourth switch; a first, second, third, and fourth diode, each diode having a cathode and an anode; and a first and second inductor, wherein said first switch is coupled between said dc power source and a first common node, said second switch is coupled between said first common node and a common reference node, said third switch is coupled between said dc power source and a second common node, said fourth switch is coupled between said second common node and said common reference node, said cathode of said first diode is coupled to said dc power source, and said anode of said first diode is coupled to a third common node, said cathode of said second diode is coupled to said third common node, and said anode of said second diode is coupled to said common reference node, said cathode of said third diode is coupled to said dc power source, and said anode of said third diode is coupled to said fourth common node, said cathode of said fourth diode is coupled to said fourth common node, and said anode of said fourth diode is coupled to said common reference node, said first inductor is coupled between said first common node and said third common node, and said second inductor is coupled between said second common node and said fourth common node. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52)
-
Specification