Content last revised on June 28, 2026
FP15R12KT3 Infineon EconoPIM™ IGBT Module: Integrated Power Stage for Compact Motor Drives
For 400V class drives demanding minimal footprint and lower switching loss, this 1200V integrated power module is a strong fit. The FP15R12KT3 from Infineon combines a CIB (Converter-Inverter-Brake) topology into a single EconoPIM™ 2 housing, built on TRENCHSTOP™ IGBT3 silicon. Core specs: 1200V | 15A | Vce(sat) 2.05V. Key benefits: reduced inverter losses and simplified three-phase assembly. What does CIB integration deliver? It places rectifier, brake chopper, and inverter on one substrate, cutting interconnects and assembly cost for low-power VFDs.
Application Scenarios & Value
Driving Switching Efficiency in Compact Three-Phase Inverters
Engineers building small Variable Frequency Drives (VFD) often wrestle with one constraint: fitting a full power stage into a tight enclosure without sacrificing thermal headroom. The FP15R12KT3 answers this by integrating a six-pack inverter, a three-phase input rectifier, and a brake chopper into a single EconoPIM™ 2 package.
Consider a 3kW industrial pump drive. The TRENCHSTOP™ IGBT3 chip set keeps Vce(sat) at 2.05V, holding conduction loss low across the operating range. This directly eases the thermal budget, allowing a smaller heatsink and tighter board layout. The on-board NTC thermistor supports real-time junction temperature monitoring, a feature valued in servo drives and HVAC compressors.
Typical deployments include low-power servo drives, solar micro-inverters, and auxiliary power conversion stages. For designs needing higher current in the same family, the related FP25R12KT3 offers a 25A rating, while the FP75R12KT4 extends the platform toward 75A applications.
Technical Deep Dive
A Closer Look at TRENCHSTOP™ IGBT3 Loss Reduction
The defining trait of the FP15R12KT3 is its trench-and-fieldstop chip architecture. Compared to planar designs, the TRENCHSTOP™ IGBT3 structure narrows the drift region while maintaining the 1200V blocking capability. This shrinks both conduction and dynamic losses.
Think of Vce(sat) as the toll a vehicle pays each time it crosses a bridge. Lower toll, lower running cost. At 2.05V typical, every conducting cycle wastes less energy as heat, which compounds across thousands of switching events per second.
The second consideration is thermal flow. The DCB ceramic substrate provides electrical isolation while channeling heat to the baseplate. A lower path resistance means the junction stays cooler for a given dissipation, extending power cycling capability. For deeper context, see our guide on why Rth matters for IGBT thermal performance.
What is the main advantage of the integrated brake chopper? It removes external switching components, simplifying dynamic braking circuits in motion control.
Key Parameter Overview
Decoding the Specs for Integrated Power Density
| Parameter | Value | Engineering Significance |
|---|---|---|
| Collector-Emitter Voltage (VCES) | 1200V | Headroom for 400V/480V AC lines |
| Collector Current (IC nom) | 15A | Sized for sub-4kW drives |
| Saturation Voltage (VCE(sat)) | 2.05V typ. | Low conduction loss |
| Topology | CIB (Sixpack + Rectifier + Brake) | Full power stage in one package |
| Package | EconoPIM™ 2 | Compact, screw-mount footprint |
| Gate-Emitter Voltage (VGES) | ±20V | Standard drive compatibility |
| Integrated Sensor | NTC Thermistor | On-board temperature feedback |
Download the FP15R12KT3 datasheet for detailed specifications and performance curves.
Frequently Asked Questions
How does the CIB topology of the FP15R12KT3 simplify drive design?
It integrates the input rectifier, inverter sixpack, and brake chopper onto one substrate, reducing interconnects, PCB area, and assembly steps for compact VFDs.
What does the 2.05V Vce(sat) mean for thermal design?
Lower saturation voltage reduces conduction loss, easing heatsink requirements and improving overall power density in enclosed three-phase inverters.
Is the 1200V rating suitable for 400V AC mains?
Yes. The 1200V VCES provides ample margin against bus transients and DC-link overvoltage in 400V and 480V class industrial drives.
How does the integrated NTC thermistor help?
It enables direct module temperature sensing, allowing controllers to implement protection and derating without external sensors near the power stage.
For engineers building space-constrained motion control, the FP15R12KT3 consolidates a full three-phase power stage into one efficient EconoPIM™ 2 module, balancing low loss with proven TRENCHSTOP™ reliability.
