Infineon Technologies IM523M6AXKMA1

Overview

IM523M6AXKMA1 from Infineon is a fully isolated 600 V, 10 A three-phase CIPOS™ Mini intelligent power module (IPM) integrating reverse-conducting IGBTs, SOI gate drivers, bootstrap diodes, overcurrent protection, undervoltage lockout, and an integrated NTC thermistor. It delivers motor phase current sensing via open-emitter low-side outputs and supports sleep mode and cross-conduction prevention for variable-speed motor drives in home appliances.

For engineers reviewing the IM523M6AXKMA1 datasheet, IM523M6AXKMA1 pinout, IM523M6AXKMA1 application, or IM523M6AXKMA1 equivalent, key selection criteria include its 600 V blocking voltage, ±10 A continuous collector current at TC = 25°C, -50 V transient VS robustness, 360 ns internal deadtime, and accessible low-side emitter pins for shunt-based phase current monitoring.

Technical Context

The IM523M6AXKMA1 implements a six-channel high- and low-side gate driver architecture with independent HIN/LIN inputs per phase, SOI-based isolation enabling stable operation under -11 V negative VS potential at VBS = 15 V, and integrated bootstrap functionality eliminating external diode/capacitor requirements. Its fault management includes latch-type overcurrent shutdown triggered at 0.525 V on ITRIP and dual UVLO thresholds (VDDUV+ = 12.4 V, VDDUV− = 11.5 V).

Thermal design is supported by a DIP 36×21 package with 2000 V RMS isolation rating, backside copper for thermal conduction, and a built-in NTC thermistor referenced to VFO. The module's open-emitter configuration (NU, NV, NW pins) enables direct Kelvin-sense current measurement without shared ground path interference.

Key Specifications

Pinout & Package

Fully isolated dual in-line molded module (DIP 36×21), RoHS-compliant lead-free terminations, 24-pin layout with integrated thermal pad on underside.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FSTB1060A and FSB50550, IM523M6AXKMA1 uniquely combines SOI-level dv/dt immunity, integrated NTC + ITRIP + sleep mode, and open-emitter current sensing in a 24-pin DIP package-making it optimal for thermally managed, safety-critical 100–200 W appliance motors.

Availability

IM523M6AXKMA1 is available at Aetrix Electronics and suitable for washing machine drives, refrigerator compressors, small HVAC fans, and smart home appliance pumps requiring stable component supply, industrial qualification, and long-term lifecycle support.

Supply support for IM523M6AXKMA1 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 IGBT, SiC, and intelligent power modules.

The CIPOS™ Mini product line targets compact, high-reliability motor inverters for white goods and industrial drives, emphasizing integration, thermal performance, and system-level protection features.

FAQ

What is the maximum allowable DC bus voltage for IM523M6AXKMA1?

The absolute maximum DC link supply voltage is 450 V under normal operation, with a 500 V surge rating for ≤10 ms. Exceeding 450 V risks permanent damage to the integrated IGBTs and gate drivers, as confirmed by Infineon's absolute maximum ratings table (Section 3.2). Operation above this value voids JEDEC industrial qualification.

How does the VFO pin support both fault reporting and temperature monitoring?

VFO is an open-drain output that pulls low during overcurrent or undervoltage faults. When no fault is active, it connects internally to the NTC thermistor-allowing external circuitry to measure resistance across VFO–VSS to derive temperature. This dual-mode operation is enabled by internal analog switches and requires no external multiplexing.

Can IM523M6AXKMA1 be used without external bootstrap capacitors?

No-external bootstrap capacitors are mandatory. While the module integrates bootstrap diodes, it does not include storage capacitance. Each high-side channel (U/V/W) requires a dedicated 0.22 µF–0.47 µF ceramic capacitor between VBx and VSx, placed within 5 mm of the pins to maintain gate drive stability under load.

What is the purpose of the NU, NV, and NW pins beyond current sensing?

These pins provide Kelvin connections to the low-side IGBT emitters, enabling accurate current measurement while isolating the sense path from power ground noise. They also serve as reference nodes for the internal overcurrent comparator (ITRIP), ensuring precise fault detection independent of PCB trace inductance or shared return paths.