Stage Solutions

PFC 600/650 V Field Stop IGBTs with-out Anti-Parallel Diode

Inverter

1-Phase: 600/650 V Field Stop IGBTs with Anti-Parallel Diode

3-Phase: 1000/1200 V Field Stop IGBTs with Anti-Parallel Diode

Rectifier Fast Reverse Recovery Diodes with Low VF and Softness factor

Aux

800 V FPS™ Series, Integrated Power Switches

PWM Controllers, 800 V Power MOSFETs

Fairchild’s broad power portfolio offers energy and cost-saving solutions to meet the diverse range of low-, mid- and high-power welding inverter design requirements—high efficiency, high switching frequency while decreasing size and weight. Our high-end IGBT technology offers optimum performance where low conduction and switching losses are essential—even at high current levels. Rectifier provides low voltage drop as well as fast reverse recovery time and softness factor. Integrated FPS™ series enables the auxiliary (aux) power design to achieve lower standby power losses with compact size and reliability. Optically isolated gate drivers offer wide operating voltage range and high common-mode transient immunity. In addition, high-voltage gate drivers have excellent noise immunity and low power consumption.

High Speed, High Efficiency, High Reliability, High Performance

INDUSTRIAL WELDING POWER SUPPLY SOLUTIONS

fairchildsemi.com

Full-Bridge/Half-Bridge Topology for Single-(>20 kHz) and Three (<40 kHz)-Phase Inverters • Excellent transformer utilization • Reduced inductor current ripple (by doubling the switching frequency)

Two-Switch Forward Topology for Single-Phase Inverters (>20 kHz) • Suited for sudden load-changes • Excellent noise immunity • No need for reset-circuit compared to forward topology

Stage Solutions

PFC 600/650 V Field Stop IGBTs without Anti-Parallel Diode

Inverter 1-Phase: 600/650 V Field Stop IGBTs without Anti-Parallel Diode

Rectifier Fast Reverse Recovery Diodes with Low VF and Softness factor

Aux

800 V FPS™ Series, Integrated Power Switches

PWM Controllers, 800 V Power MOSFETs

Welding Machine Block Diagram (Full Bridge Inverter Type)

Bridge Rectifier PFC (Option) Primary Inverter

RectifierWelding Torch

DC Outputfor Steel Welding

Welding Torch

Secondary InverterAUX Power

Optocoupler

AC Outputfor Aluminum Welding

DC-

Link

AC Output Ctrl

Driver

Driver

Driver

Driver

Driver

Driver

Driver

Driver

CtrlAUX Power

Output

Ctrl

Ctrl

Driver

Driver

Bridge Rectifier PFC (Option) Inverter

RectifierWelding Torch

DC-

Link

AC Output

AUX PowerOptocoupler

AUX PowerOutput

DC Outputfor

Steel Welding

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Emitter

Gate

P-base

N+

N-

N

Collector

P+

15

10

51.6 1.8 2.0 2.2 2.4

Collector-Emitter Voltage, VCE(SAT) (V)

Switc

hing

Los

s, E

OFF

/ A

(uJ

)

FGH40N60UFD

EOFF 45%

FGH40N60SMDFGA40N65SMD

FGH40N60SFD

VCE(SAT) 20%

High-Speed Field Stop IGBT Technology Optimized for High-End Welding Applications

Energy saving, high reliability, and compact design can be achieved by using Fairchild’s latest Field Stop IGBT technology. Our solution is especially optimized for welding applications that require high-speed switching characteristics balancing between switching and conduction losses. Fairchild’s high-speed IGBTs offer superior switching performance characteristics that ensure improved system efficiency as well as minimizing total losses.

Features and Benefits• Low switching and conduction loss suitable for industrial applications

• Positive temperature coefficient for easy parallel operation

• Maximum junction temperature: TJ = 175°C

• High current capability up to 75 A

• Wide SOA (Safe Operating Area)

• Higher breakdown voltage with excellent ruggedness characteristics

Additional Applications• Solar inverters, UPS, SMPS, PFC and hard switching topologies

Measurement Conditions- Full-Bridge Inverter Topology- Input: Single-phase 220 VAC - Output: 160 A, 26.4 VDC- PO = 4.3 kW, TC = 80°C

FGH40N60UFD

FGH40N60SMDFGA40N65SMD

FGH40N60SFD

Switching Frequency, fSW (Hz)

Tota

l Pow

er L

oss,

PD (

W)

IGBT EOFF vs. VCE(SAT) Trade-off Characteristics Power Loss Simulations on Welding Machine