Nanosecond pulsed power sources having multi-core transformers
AssigneePulse Biosciences, Inc.
InventorsChaofeng Huang, Gregory P. Schaadt, Kenneth R. Krieg
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Abstract
Described herein are apparatuses and methods for applying high voltage, sub-microsecond (e.g., nanosecond range) pulsed output to a biological material, e.g., tissues, cells, etc., using a high voltage (e.g., MOSFET) gate driver circuit having a high voltage isolation and a low inductance. In particular, described herein are multi-core pulse transformers comprising independent transformer cores arranged in parallel on opposite sides of a substrate. The transformer cores may have coaxial primary and secondary windings. Also describe are pulse generators including multi-core pulse transformers arranged in parallel (e.g., on opposite sides of a PCB) to reduce MOSFET driver gate inductance.
Claims20
An apparatus for delivering pulsed electrical energy comprising:
- one or more high voltage switch drivers;
- one or more high voltage switches;
- and
- one or more multi-core pulse transformers, each multi-core pulse transformer comprising a first transformer core and a second transformer core on opposite sides of a substrate, wherein the first transformer core and the second transformer core are each wound by one or more cables forming a primary winding and a secondary winding,
- further wherein the one or more high voltage switch drivers are coupled to the primary windings such that the primary winding of the first transformer core is electrically connected in parallel to the primary winding of the second transformer core, and the one or more high voltage switches are coupled to the secondary windings such that the secondary winding of the first transformer core is electrically connected in parallel to the secondary winding of the second transformer core.
A method of generating a pulsed output, the method comprising:
- emitting a driving pulse from a high voltage switch driver to a multi-core pulse transformer through a primary winding of a first transformer core that is electrically connected in parallel to a primary winding of a second transformer core;
- and
- receiving the driving pulse at a high voltage switch in parallel from a secondary winding of the first transformer core and a secondary winding of the second transformer core, wherein the secondary winding of the first transformer core and the secondary winding of the second transformer core are electrically connected in parallel on opposite sides of a substrate.
Dependencies are inferred from the claim text.