Patent ID: 11972924
Assignee: APPLIED MATERIALS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A method of generating a voltage waveform, comprising:
generating a first voltage pulse at a common node at a first time by closing a first switch that has a first terminal and a second terminal, wherein:
the first terminal of the first switch is coupled to a first terminal of a first voltage source;
a second terminal of the first voltage source is coupled to a first terminal of a primary winding of a first transformer, the first transformer having a first transformer ratio;
the second terminal of the first switch is coupled to a second terminal of the primary winding of the first transformer and to ground; and
the common node is coupled to a first terminal of a secondary winding of the first transformer; and

generating a second voltage pulse at the common node at a second time by closing a second switch that has a first terminal and a second terminal, wherein:
the first terminal of the second switch is coupled to a first terminal of a second voltage source;
a second terminal of the second voltage source is coupled to a first terminal of a primary winding of a second transformer, the second transformer having a second transformer ratio;
the second terminal of the first switch is coupled to a second terminal of the primary winding of the second transformer and to ground;
a first bias voltage is generated by the second voltage source between the first terminal and the second terminal of the second voltage source; and
a first terminal of a secondary winding of the second transformer is coupled to a second terminal of the secondary winding of the first transformer,

wherein the common node is disposed between the first terminal of the secondary winding of the first transformer and a load, wherein the secondary winding of the first transformer is coupled in series with the secondary winding of the second transformer, and wherein the primary winding of the first transformer is not coupled to the primary winding of the second transformer.