ApplicationsPlasma Power Supplies Information

 

Plasma power supplies are direct current (DC) and radio frequency (RF) devices used in plasma generation equipment for applications such as sputtering, plasma etching, physical vapor deposition (PVD) coating, and chemical vapor deposition (CVD) coating.

 

To achieve optimum sputtering conditions, a plasma generator modifies plasma properties, especially ion density.

 

Plasma etching removes organic and inorganic contamination, increases wettability and bond strength, and removes residue from a variety of materials. Plasma equipment is used under precisely controlled conditions, without the safety hazards and liquid wastes associated with wet cleaning and etching.

 

Plasma power supplies can be used for thermal spray coating, metal cutting/welding, steel melting and remelting, waste remediation, and tundish heating. An RF plasma generator manufacturer can design plasma power supplies for depth of cutting such as steady machine production cutting up to 13mm.

 

Plasma Power Supplies InformationTypes

 

A plasma power supply can be an RF power supply or a DC power supply. An RF power supply can provide high power density and can eliminate the need for front-end DC-to-DC conversion components. Applications include plasma-based thin film processes for semiconductor, flat panel display, or data storage (DVD) manufacturing.

 

A DC power supply delivers increased throughput, which is an important consideration for demanding PVD applications such as flat panel displays.

 

Specifications

 

Plasma power supplies can have rated power up to 15 MW, input voltages to 14.7 kV, single-phase or three-phase power, inputs to 2500 VDC or 6000 ADC, and duty cycles that vary with input currents. Duty cycle variations are expressed as a percentage, such as 100% at 60 amps and 40% at 80 amps.

 

Standards

 

IEC 60974-8 - This part of IEC 60974 specifies safety and performance requirements for gas consoles intended to be used with combustible gases or oxygen. These gas consoles are designed to supply gases for use in arc welding, plasma cutting, gouging and allied processes in nonexplosive atmospheres.

 

IEC 60680 - Test methods of plasma equipment for electroheat applications.

 

References

 

Image Credits:

 

Advance Cutting Systems, Inc.