Infineon Technologies IM241S6S1JALMA1

Overview

IM241S6S1JALMA1 from Infineon Technologies is a CIPOS™ Micro Intelligent Power Module (IPM) integrating six reverse-conducting RCD2 IGBTs, three half-bridge high-voltage IC drivers, bootstrap circuitry, fault reporting, and an integrated NTC thermistor. It delivers 600 V blocking voltage, supports 3.3 V/5.0 V logic inputs, and provides open-emitter low-side emitter pins (NU, NV, NW) for phase current sensing in 3-phase motor drives. Designed for fan and pump inverters in small home appliances.

For engineers reviewing the IM241S6S1JALMA1 datasheet, IM241S6S1JALMA1 pinout, IM241S6S1JALMA1 application, or IM241S6S1JALMA1 equivalent, key selection criteria include its slow-speed "J" variant optimized for low EMI operation, isolated 2000 VRMS rating, programmable fault-clear timing via RFE pin, and accessible low-side emitter terminals for shunt-based current monitoring.

Technical Context

This IPM implements a fully integrated 3-phase inverter stage with reverse-conducting IGBTs and monolithically embedded HVIC gate drivers. Each half-bridge includes shoot-through prevention logic with ~300 ns minimum deadtime and input noise filtering (t_FIL,IN ≥ 1 µs) compatible with 3.3 V microcontrollers.

The module features dual-supply architecture: VDD1/VDD2/VDD3 (low-side logic supplies) and VB(U/V/W)–VS(U/V/W) (floating high-side bootstrap supplies), with undervoltage lockout thresholds of 10.9 V (falling) / 11.1 V (rising) on both domains. Fault detection is implemented via ITRIP input (500 ns filter) and RFE pin reporting under-voltage or overcurrent events.

Key Specifications

Pinout & Package

IM241S6S1JALMA1 uses a surface-mount SOP-29x12 package with 23-pin layout and fully isolated construction. Lead-free, RoHS-compliant terminal plating ensures compatibility with standard reflow processes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-phase inverter IPM applications.

Compared with FSB50550 and IRSM808-205MH, IM241S6S1JALMA1 uniquely combines slow-switching EMI optimization, per-phase open-emitter sensing, and user-programmable fault recovery-enabling higher functional integration and simplified compliance testing in Class II appliance inverters.

Availability

IM241S6S1JALMA1 is available at Aetrix Electronics and suitable for refrigerator fan drives, condenser pump control, and compact washing machine motor inverters requiring stable component supply across extended production lifecycles.

Supply support for IM241S6S1JALMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in silicon carbide and intelligent power modules.

The CIPOS™ Micro product line targets cost-sensitive, high-volume appliance motor drives-delivering integrated gate drivers, protection logic, and thermal monitoring in compact, isolated packages for 3-phase BLDC and PMSM inverters.

FAQ

What is the purpose of the RFE pin on IM241S6S1JALMA1?

The RFE pin integrates three functions: enable input (pull high to activate), fault output (open-drain low during UVLO or overcurrent), and programmable fault-clear timer (via external RC network). When a fault occurs, RFE pulls low; after the fault clears, the RC network determines automatic recovery delay-e.g., 1.7 ms with 1.2 MΩ and 1 nF-without MCU intervention.

How does the "J" speed variant differ from the "B" version?

The "J" suffix denotes the slow-switching variant optimized for low EMI: it reduces dV/dt during switching transitions, lowering radiated emissions and easing EMC filter design. This comes at the cost of slightly higher conduction losses versus the "B" (fast-switching) version, making "J" ideal for fan/pump applications where acoustic noise and EMI compliance are prioritized over peak efficiency.

Can IM241S6S1JALMA1 be used with 3.3 V microcontrollers?

Yes. All HIN and LIN inputs are Schmitt-triggered and specified for 3.3 V and 5.0 V logic compatibility. Input thresholds meet LSTTL/CMOS levels, and internal 800 kΩ pull-down resistors ensure defined states during power-up. No level shifters are required when interfacing with STM32, ESP32, or other 3.3 V MCUs.

What is the role of the NU, NV, and NW pins?

NU, NV, and NW are exposed low-side IGBT emitters-each electrically isolated and routed separately to enable three-shunt current sensing. Connecting shunt resistors between each emitter and VSS allows precise per-phase current measurement with minimal PCB inductance, supporting advanced control algorithms like field-oriented control (FOC) and stall detection.