Title :
Solid-State LTD Module Using Power MOSFETs
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
It is proposed that linear transformer driver (LTD) concept can be applied to compact repetitive pulsed-power generation. For experimental demonstration, a table-top LTD module has been constructed by using power metal-oxide-semiconductor field-effect transistors (MOSFETs) and film capacitors. It consists of 24 basic circuits and a magnetic core, contained in a cavity case having a diameter of 32 cm and a height of 1.1 cm. All MOSFETs can be turned on and off synchronously, controlled by a single optic fiber. This LTD module has been tested with operation voltage of 900 V for single shot and 700 V for repetitive operation at 500 Hz. Near-rectangle waveforms were obtained on a resistive load of 3.2 , with pulsewidth of 200 ns, rise time of 20 ns, and fall time of 40 ns. The overall system efficiency was obtained to be 76%.
Keywords :
modules; power MOSFET; power capacitors; power transformers; pulsed power technology; compact repetitive pulsed-power generation; film capacitors; frequency 500 Hz; linear transformer driver; magnetic core; power MOSFET; power metal-oxide-semiconductor field-effect transistors; single optic fiber; size 1.1 cm; size 32 cm; solid-state LTD module; table-top LTD module; voltage 700 V; voltage 900 V; Capacitors; Driver circuits; FETs; MOSFETs; Magnetic circuits; Magnetic films; Optical films; Pulse generation; Pulse transformers; Solid state circuits; Power electronics; power metal–oxide–semiconductor field-effect transistors (MOSFETs); pulse generation; pulsed-power systems;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2010.2051042
