Toshiba ST1500GXH24 IEGT Power Module

The Toshiba ST1500GXH24 is an Injection Enhanced Gate Transistor (IEGT) power module rated at 1500 A continuous current and 2400 V blocking voltage. It is designed for high-power industrial applications such as medium-voltage drives, wind turbine converters, and traction systems. This module is compatible with Converteam (now GE Energy) power stacks and PIB 651A assemblies, offering low conduction losses and high short-circuit ruggedness.

Electrical Specifications

• Collector-Emitter Voltage (V_CES): 2400 V

• DC Collector Current (I_C): 1500 A (case temperature 80°C)

• Peak Collector Current (I_CM): 3000 A (1 ms pulse)

• Gate-Emitter Voltage (V_GES): ±20 V

• Saturation Voltage (V_CE(sat)): 2.8 V typical at 1500 A, 125°C

• Switching Energy: E_on= 2800 mJ, E_off= 2200 mJ (at 1200 A, 1200 V, 125°C)

Thermal and Mechanical Properties

The module uses a pressure-contact design with aluminum nitride (AlN) insulating substrate, providing low thermal resistance (R_th(j-c) = 0.022 K/W). The baseplate is copper with Ni plating, suitable for forced air or liquid cooling. Dimensions: 140 mm × 130 mm × 38 mm. Weight: 1.2 kg. Terminal style: M6 screw connections for power, auxiliary contacts for gate drive.

Protection Features

The ST1500GXH24 includes an integrated temperature sensor (NTC thermistor) and a built-in gate resistor for controlled switching. It withstands short-circuit conditions (t_sc > 10 µs at 1200 V, V_GE = 15 V). The module also features a soft punch-through (SPT) structure that limits voltage overshoot during turn-off, improving reliability in hard-switching converters.

Applications

This IEGT is typically found in Converteam MV7000 drives, GE Power Conversion LV6 series, and wind turbine full-converter systems (e.g., GE 2.5 MW). It can be paralleled for higher current ratings. The module is compatible with standard gate driver boards such as Toshiba GDR-2400 or Converteam PIB 651A interface cards.

Reliability and Standards

Qualified according to IEC 60747-15 and JEDEC standards. Power cycling capability: 50,000 cycles (ΔT_j=70°C). Storage temperature: -40°C to +125°C. The module is RoHS compliant and UL recognized (File E232949). For long-term deployment in wind or traction, a lifetime calculation tool is available from Toshiba.