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 TRENCHSTOP^TM 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

I_{c(nom) (@100°)}: 46,0 A

P_tot: 255 W

Features:

Co-packed with Infineon's Rapid Si-diode technology
Lowest E_off 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

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IGBT Technology: RC TRENCHSTOP™ 5 WR5

Package: TO-247-3

Switching Frequency min to max: 20kHz to 60kHz

I_{c(nom) (@100°)}: 40,0 A

P_tot: 230 W

Features:

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

Benefits:

Best price performance ratio
Good fit for designs of f_sw>20kHz
Low T_j &T_c for lower heatsink and cooling cost

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IGBT Technology: IGBT TRENCHSTOP™ 5 S5

Package: TO-247-3

Switching Frequency min to max: 10kHz to 30kHz

I_{c(nom) (@100°)}: 50,0 A

P_tot: 230 W

Features:

High speed smooth switching device for hard & soft switching (Softer switching than H5)
Very low V_CE(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

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IGBT Technology: High Speed 3 H3

Package: TO-247-3

Switching Frequency min to max: 20kHz to 100kHz

I_{c(nom) (@100°)}: 40,0 A

P_tot: 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

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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.

Download Industrial and General Purpose Gate Driver ICs

Package: DSO-8 150 mil

Features:

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

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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

I_{c(nom) (@100°)}: 300,0 A

P_tot: 1950 W

Features:

High Short circuit capability
Low switching losses
Unbeatable robustness

Benefits:

Flexibility
Highest reliability
Optimal electrical performance

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IGBT Technology: IGBT4 - T4

Housing: 34mm

I_{c(nom) (@100°)}: 150,0 A

P_tot: 790 W

Features:

Low switching losses
Extended operation temperature T_{vj op}
V_CEsat with positive temperature coefficient

Benefits:

Flexibility
Highest reliability
Optimal electrical performance

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

Benefits:

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

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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

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IKW40N65H5

IKW40N65WR5

IKW40N65ES5

IKW40N120H3

1EDI20I12AF

FF300R12KS4

FF150R12RT4

IDW80C65D1

56DN06B01 ELEM