High‐speed high‐voltage solid‐state Marx generator based on SiC MOSFETs

Portable Marx Generator for Microplasma Applications

There are many applications using pulsed power such as the triggering of high speed cameras and spectrometers, the processing or chemical analysis of minute material, and the stimulation of cells by electrical pulses. The pulse width and voltage required for each application are different in the range of ns and kV. The energy required is usually in the mJ regime. Here, a novel portable pulse po...

Thermal instability effects in SiC Power MOSFETs

Silicon carbide (SiC) power MOSFETs are characterised by potentially thermally unstable behaviour over a broad range of bias conditions. In the past, such behaviour has been shown for silicon (Si) MOSFETs to be related to a reduction of Safe Operating Area at higher drain–source bias voltages. For SiC MOSFETs no characterisation exists yet. This paper presents a thorough experimental investigat...

Solid-State Bipolar Marx Generator with Voltage Droop Compensation

This paper addresses the voltage droop compensation associated with long pulses generated by solid-stated based high-voltage Marx topologies. In particular a novel design scheme for voltage droop compensation in solid-state based bipolar Marx generators, using low-cost circuitry design and control, is described. The compensation consists of adding one auxiliary PWM stage to the existing Marx st...

A solid-state Marx generator driven Einzel lens chopper.

A new type of pulse chopper called an Einzel lens chopper is described. An Einzel lens placed immediately after an electron cyclotron resonance ion source is driven by high-voltage pulses generated by a newly developed solid-state Marx generator. A rectangular negative barrier pulse-voltage is controlled in time, and the barrier pulse is turned on only when a beam pulse is required. The results...

High temperature pulsed-gate robustness testing of SiC power MOSFETs