Infineon FP35R12W2T4_B11 | Integrated PIM Module for High-Efficiency Motor Drives
Product Highlights Overview
The Infineon FP35R12W2T4_B11 is a highly integrated Power Integrated Module (PIM) designed for compact and efficient power conversion systems. Housed in the industry-proven EconoPIM™ 2 package, this module combines a three-phase input rectifier, a brake chopper, and a three-phase inverter stage in a single, thermally efficient unit. It's engineered for applications demanding high reliability and power density, particularly in the low-to-mid power range of variable frequency drives.
- Voltage and Current Rating: 1200V / 35A
- Core Technology: Features Infineon's robust TRENCHSTOP™ IGBT4 and a soft, fast-recovery Emitter Controlled Diode.
- Topology: Complete three-phase inverter bridge with rectifier and brake chopper.
- Package: EconoPIM™ 2 with PressFIT pins for reliable, solder-free mounting.
- Key Feature: Integrated NTC thermistor for precise temperature monitoring and system protection.
Technical Deep Dive: TRENCHSTOP™ IGBT4 and PIM Integration
The performance of the Infineon FP35R12W2T4_B11 is rooted in its advanced silicon and intelligent package design. The TRENCHSTOP™ IGBT4 technology represents a critical balance between conduction and switching losses. It offers a low collector-emitter saturation voltage (VCE(sat)), which directly reduces power dissipation during the on-state—a dominant loss factor in motor drive applications that operate at moderate switching frequencies (typically 2-8 kHz). Simultaneously, its switching characteristics are optimized to minimize energy loss during turn-on and turn-off, improving overall inverter efficiency.
The true system-level benefit comes from its PIM (Power Integrated Module) architecture. By co-packaging the input rectifier, brake chopper, and inverter stage, this module drastically simplifies the design and assembly process. Engineers can reduce PCB complexity, minimize stray inductance between stages, and shrink the overall physical footprint of the power electronics. This integration is not just about convenience; it inherently enhances system reliability by reducing the number of discrete components and potential points of failure.
Application Scenarios & Value Proposition
The FP35R12W2T4_B11 is not a general-purpose switch; it is a purpose-built solution for specific power conversion tasks. Its strengths are most evident in:
- General Purpose Motor Drives (VFDs): For AC induction motors up to ~15 kW, this module provides a complete power stage. The integrated brake chopper is essential for managing regenerative energy during motor deceleration, protecting the DC bus from overvoltage conditions.
- Servo Drives: In robotic and CNC applications, precision and dynamic response are paramount. The module's low stray inductance and fast-switching capability contribute to clean gate signals and precise current control, enabling smoother and more accurate motor positioning.
- Small-Scale UPS Systems: The integrated topology is well-suited for the inverter stage of an uninterruptible power supply, offering a compact and reliable solution for converting DC battery power to a stable AC output.
Key Parameter Overview
For engineers requiring quick-reference data, the following table summarizes the critical electrical and thermal characteristics. For a comprehensive analysis, please download the official datasheet.
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (VCES) | 1200 V |
| Continuous Collector Current (IC nom) | 35 A |
| Collector-Emitter Saturation Voltage (VCEsat, typ. at IC nom) | 1.90 V |
| Total Switching Energy (Ets, typ. at IC nom) | 4.50 mJ |
| Short Circuit Withstand Time (tSC) | 10 µs |
| Maximum Junction Temperature (Tvj op) | 150 °C |
Industry Insight: The Drive for System Integration
The trend in power electronics is clear: greater functionality in smaller packages. The market is moving away from complex discrete designs towards integrated solutions that offer higher power density and reliability. The Infineon FP35R12W2T4_B11 is a prime example of this philosophy. By providing a pre-validated, all-in-one power stage, it allows engineering teams to bypass significant challenges in thermal management, EMI filtering, and PCB layout. This accelerates the development cycle and reduces the total cost of ownership, making it a strategic choice for manufacturers looking to bring competitive and robust motor control products to market quickly.
Engineer's FAQ
Q: What is the primary benefit of the PressFIT connection technology?
A: The PressFIT pins create a high-reliability, gas-tight cold-welded connection with the PCB. This eliminates the need for a wave soldering process, which can introduce thermal stress to the module and other board components. It simplifies manufacturing, improves long-term reliability by avoiding solder joint fatigue, and facilitates easier module replacement if required.
Q: How does the integrated NTC help prevent system failures?
A: The built-in NTC thermistor provides a real-time temperature reading directly from the module's baseplate. The motor drive's controller can use this data to implement sophisticated thermal protection. If the module temperature exceeds safe limits due to overload or cooling system failure, the controller can reduce the output power or initiate a safe shutdown, preventing catastrophic IGBT failure and protecting the entire drive system.
