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Infineon’s leading technology in Welding applications

High switching frequency and reduction of turn-off losses

Leading technologies are the key factor for being successful in the highly competitive welding market. Today, customers are requesting both budget-friendly and efficient solutions delivering high performance.

Infineon takes this challenge and offers a wide range of high-quality semiconductor solutions - from Discrete IGBTs for portable welders to Bipolar Diodes for highly efficient professional welders. Whereas high switching frequency and reduction of turn-off losses is one of the most important trends for the portable low cost welder market the reliability and the power density pointed out as main criterion in the heavy-industry.

 

 

Discrete IGBTs

Meeting demands for the portable welders in terms of switching and conduction losses, our TRENCHSTOPTM 5 effects best performance compared to other IGBT on the market for one-phase inverters. Dependent on the switching behavior you can chose between different options. For three-phase welding Infineon recommends the 1200V High Speed3. Typical applications can be found in hobbyists in building constructions, workshops, car repair shops.

IGBT Technology: TRENCHSTOP™ 5 H5 (HighSpeed 5)

Package: TO-247-3

Switching Frequency min to max: 30kHz to 100kHz

Ic(nom) (@100°)46,0 A

Ptot: 255 W

Features:

  • Co-packed with Infineon's Rapid Si-diode technology
  • Lowest Eoff for 30-100kHz
  • Designed for switching faster than 30kHz
  • Made for customers striving for differentiation 

Benefits:

  • Best in-class efficiency, resulting in lower junction and case temperature leading to higher device reliability
  • 50V increase in the bus voltage possible without compromising reliability

IGBT Technology: RC TRENCHSTOP™ 5 WR5

Package: TO-247-3

Switching Frequency min to max: 20kHz to 60kHz

Ic(nom) (@100°)40,0 A

Ptot: 230 W

Features: 

  • Optimized full rated hard switching turn-off typically for Welding
  • Low Etot
  • Good Rgoff controllability
  • Developed for the low power single-phase welding market 

Benefits:

  • Best price performance ratio
  • Good fit for designs of fsw>20kHz
  • Low Tj &Tc for lower heatsink and cooling cost

IGBT Technology: IGBT TRENCHSTOP™ 5 S5

Package: TO-247-3

Switching Frequency min to max: 10kHz to 30kHz

Ic(nom) (@100°)50,0 A

Ptot: 230 W

Features: 

  • High speed smooth switching device for hard & soft switching (Softer switching than H5)
  • Very low VCE(sat) of 1.35V at 25°C, 20% lower than TRENCHSTOP™ 5 H5
  • Competitive switching losses
  • Symmetrical, low voltage overshoot 

Benefits: 

  • Best efficiency and ease of use
  • Soft current fall characteristic with no tail current, low EMI
  • Plug and play 1:1 replacement of former generation IGBTs

IGBT Technology: High Speed 3 H3

Package: TO-247-3

Switching Frequency min to max: 20kHz to 100kHz

Ic(nom) (@100°)40,0 A

Ptot: 220 W

Features:  

  • Low switching losses for high efficienc
  • Fast switching behavior  (MOSFET-like)  with low EMI emission
  • Designed for three-phase welding inverters

Benefits:

  • Provides the best compromise between switching and conduction losses
  • Excellent cost/performance ratio
  • Highest reliability

EiceDRIVER™ Compact

As every switch needs a driver, Infineon offers a broad range of dedicated drivers for Welding applications. We outline here one of our high voltage, high speed IGBT drivers with Coreless Transformers technology, EiceDRIVER™ Compact 1EDI20I12AF.

Industrial and General-Purpose Gate Driver ICs

Package: DSO-8 150 mil

Features: 

  • Separate source/sink output (Vsupply: 35V)
  • Iout: 2A @ 15V
  • 1200V Coreless Transformer IC with galvanic isolation
  • 300ns prop del. with 240ns ft
  • High CMTI robustness >100kV/µs
  • Separate source/sink output

IGBT modules

If your application requires a higher welding current, we recommend our well-known 62mm 1200V dual IGBT modules with the IGBT2 fast technology for high frequency switching. Our 62mm & 34 mm portfolio stands for flexibility, optimal electrical performance and for highest reliability. Typical applications these IGBT modules can be found are iron industry as well as the Industrial Automation.

IGBT Technology: IGBT2 Fast

Housing: 62mm

Ic(nom) (@100°): 300,0 A

Ptot: 1950 W

Features:  

  • High Short circuit capability
  • Low switching losses
  • Unbeatable robustness

Benefits: 

  • Flexibility
  • Highest reliability
  • Optimal electrical performance

 

 

IGBT Technology: IGBT4 - T4

Housing: 34mm

Ic(nom) (@100°): 150,0 A

Ptot: 790 W 

Features:

  • Low switching losses
  • Extended operation temperature Tvj op
  • VCEsat with positive temperature coefficient

Benefits: 

  • Flexibility
  • Highest reliability
  • Optimal electrical performance

 

 

Diodes

Depending on the particular welding market, Infineon offers different diodes as secondary side rectification:

The Rapid 1 power silicon diodes fill the gap between the SiC diodes and emitter-controlled diodes for up to 80A/650V.

The housing less welding diode is a high reliable and robust device specifically for the requirements in the automotive and metallurgical welding applications up to 20kA/600V.

IGBT Technology: 650 Rapid 1 Diode Common cathode (40Ax2)

Package: TO-247-3

Features:  

  • Temperature stable conduction losses (VF)
  • Rapid 1 offers 250mV lower conduction losses (VF) than best competitor
  • Ultra-fast recovery
  • 175°C junction operating temperature
  • Perfect for applications switching between 18kHz and 40kHz

Benefits:

  • Lowest Irrm improves the Eon of the switch in the PFC by 10%
  • High level of softness provides BiC EMI behavior

IGBT Technology: Specific welding Diode

Housing: Housing less

Features:  

  • High current
  • Highest reliability
  • High power cycling capability

 Benefits:

  • Lowest thermal resistance reduces system costs and allows higher current range