A discrete IGBT that helps reduce the power consumption and radiated emissions of home appliances : GT30J110SRA

Product News 2020-11

Toshiba Electronic Devices & Storage Corporation ("Toshiba") has launched a 1100 V discrete IGBT, “GT30J110SRA,” to be used for home appliances such as IH rice cookers and microwave ovens using voltage resonance circuits with AC100 V input.

The new product GT30J110SRA has improved characteristics, featuring lower loss, short-circuit current suppression, a wider safe operating area and lower radiated emissions than the existing product[1].

Lower loss is offered by reducing turn-off switching loss and diode conduction loss. It’s possible to use smaller gate drive resistance than the past by reducing radiation noise. Its typical turn-on time[2] is 0.2 μs, about 20 % reduction from the existing product[1], and its typical turn-off time[2] is 0.33 μs, about 29 % reduction. The diode typical forward voltage[3] is 1.40 V which is about 33 % reduction, helping reduce the power consumption of the equipment.

Short-circuit current suppression is offered by reducing saturation current. This can reduce the short- circuit current of a resonance capacitor during equipment start-up. The peak value of the typical saturation current of the new product is 200 A, about 40 % reduction from the existing product[1], while its collector-emitter saturation voltage is equivalent to that of the existing product[1] for 60 A or lower.

Its wide safe-operating area has been extended on the high voltage side compared with the existing product[1], making the product less likely to break down.

Low radiated emissions[4] are offered by optimizing its chip structure. Its radiated emissions are 35.8 dBμV/m at around 30 MHz where the radiated emissions level is the strongest, about 10 dBμV/m reduction from the existing product[5].

  • 6.5th generation
  • Built-in diode by RC structure
  • Low diode forward voltage : VF=1.40 V (typ.) @IF=30 A, Ta=25 °C

Voltage resonance for home appliances

  • IH rice cooker
  • IH cooking heater
  • Microwave oven, etc.
  • The new product features a diode forward voltage[3] of typical 1.40 V at 25 °C and 30 A, about 33 % reduction from the existing product[1], helping reduce the power consumption of the equipment.
  • The new product has changed the chip design to reduce the capacitor short-circuit current generated during startup for voltage resonance compared with the existing product[1]. The collector current is suppressed to 150 to 200 A at TC=25 °C and VGE=15 V. Its collector-emitter saturation voltage is also equivalent to that of the existing product[1] for 60 A or lower.
  • The new product offers better trade-off characteristics with a wide gate resistance range compared to the existing product[1].
  • The new product’s radiated emissions at around 30 MHz where the radiated emissions level is the strongest has improved by about 10 dBμV/m compared to the existing similar product[5].

Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.