Infineon Technologies IM523S6AXKMA1

Overview

IM523S6AXKMA1 from Infineon is a fully isolated CIPOS™ Mini intelligent power module integrating six RC-Drives IGBTs, rugged SOI gate drivers, bootstrap circuitry, overcurrent shutdown, undervoltage lockout, and an integrated NTC thermistor. It delivers three-phase motor control for variable-speed drives with 450 V DC-link rating, ±6 A continuous current per phase at TC = 25°C, and -40 to 125°C operating case temperature. Used in compact home appliance motor inverters requiring high thermal reliability and EMI reduction.

For engineers reviewing the IM523S6AXKMA1 datasheet, IM523S6AXKMA1 pinout, IM523S6AXKMA1 application, or IM523S6AXKMA1 equivalent, key selection criteria include its isolated DIP-24 package, open-emitter low-side emitter pins (NU/NV/NW) for phase current sensing, -11 V allowable negative VS potential at VBS = 15 V, 360 ns built-in deadtime, and fault output with latch behavior on ITRIP or VDD UVLO.

Technical Context

The IM523S6AXKMA1 integrates six discrete IGBTs into a single fully isolated dual-in-line molded module with internal bootstrap diodes and SOI-based gate drivers. Its high-side floating supply (VB/VS) supports up to 600 V offset, while the control logic operates from VDD (12.4 V turn-on, 11.5 V UVLO) referenced to VSS.

It implements hardware-level cross-conduction prevention via input priority logic and fixed 360 ns deadtime insertion. Fault handling includes latched shutdown triggered by either ITRIP (0.525 V threshold, 530 ns noise filter) or VDD undervoltage, with VFO output requiring external pull-up and fault-clear time ≥100 µs.

Key Specifications

Pinout & Package

Fully isolated dual-in-line molded module (DIP-24), 36 mm × 21 mm footprint, RoHS-compliant lead-free plating, designed for through-hole mounting with backside thermal pad for heatsink interface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-phase intelligent power module applications.

Compared with FAN9612M and FSB50550, IM523S6AXKMA1 provides higher integration (integrated bootstrap, NTC, sleep logic), certified isolation (2000 V), and tighter fault control (latched VFO, 100 µs clear time), making it optimal for safety-critical, space-constrained home appliance inverters.

Availability

IM523S6AXKMA1 is available at Aetrix Electronics and suitable for washing machine drive inverters, refrigerator compressor controllers, and small HVAC fan modules requiring stable component supply, long-term lifecycle support, and JEDEC-qualified industrial reliability.

Supply support for IM523S6AXKMA1 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 electronics, and industrial control ICs, with global manufacturing and qualification infrastructure aligned to ISO/TS 16949 and IATF 16949.

The CIPOS™ Mini product line targets compact, high-efficiency motor drives for white goods and HVAC systems, emphasizing integration, thermal robustness, and safety certification readiness out-of-the-box.

FAQ

What is the maximum allowable negative voltage on VS pins relative to VSS?

The VS(U), VS(V), and VS(W) pins tolerate transient negative voltages down to -50 V relative to VSS, enabling reliable operation under high dv/dt conditions in inductive motor loads. This specification is validated per Infineon's absolute maximum ratings table and supports robust design in noisy EMI environments without additional clamping circuitry.

How does the sleep function behave after an overcurrent fault?

After ITRIP triggers, the IM523S6AXKMA1 enters sleep mode: all gate outputs shut down and remain latched off until a new valid edge (rising or falling) is applied to any HIN or LIN input. This prevents automatic restart and enforces controlled recovery - critical for safety compliance in appliances with mechanical interlocks or fluid flow dependencies.

Can the VFO pin be used simultaneously for fault reporting and temperature monitoring?

Yes - VFO serves dual purpose: as an open-drain fault output (active-low latched signal) and as the connection node for the internal NTC thermistor. When used for temperature sensing, VFO must be biased with a voltage divider; during fault, it pulls low regardless of biasing. Designers must sequence reads to avoid conflict between fault state and analog measurement.

What is the minimum recommended bootstrap capacitor value for 20 kHz PWM operation?

For 20 kHz PWM with 50% duty cycle and 15 V VBS, Infineon recommends ≥1 µF ceramic capacitor per high-side channel (VB/VS pair), placed within 5 mm of the module pins. This ensures sufficient charge retention across the longest off-time (25 µs), maintaining VBS above 10.7 V UVLO threshold and preventing unintended high-side shutdown.