Infineon Technologies IRSM505-044DA2

Overview

IRSM505-044DA2 from Infineon Technologies (formerly International Rectifier) is a 250V, 3-phase integrated power module (IPM) with integrated high-voltage gate drivers, 1.0Ω max R_DS(on) Trench FREDFETs, and NTC-based temperature feedback. It delivers 3.0A DC per phase, supports 20kHz PWM, and is qualified for industrial motor drive applications in energy-efficient small appliances such as fans and pumps.

For engineers reviewing the IRSM505-044DA2 datasheet, IRSM505-044DA2 pinout, IRSM505-044DA2 application, or IRSM505-044DA2 equivalent, key selection criteria include its 1900V_RMS isolation rating, matched propagation delay across all six channels, open-source configuration for shunt current sensing, 3.3V logic compatibility, and integrated bootstrap functionality - critical for compact, low-EMI BLDC motor inverters.

Technical Context

This IPM integrates three half-bridge HVICs with independent floating high-side supplies (VB1–VB3), each driving a low-R_DS(on) MOSFET pair. Its internal architecture features advanced input filtering, under-voltage lockout on all VCC/VB rails, and dV/dt-optimized switching to balance conduction loss and EMI performance.

The module implements thermally coupled NTC sensing (R₂₅ = 47kΩ ±5%) directly on die for real-time junction temperature monitoring, and supports single-leg or full-shunt current sensing via dedicated VRx terminals (VR1–VR3) and open-source outputs (U/VS1, V/VS2, W/VS3).

Key Specifications

Pinout & Package

DIP23A package: 23-pin dual-in-line, wide-body, creepage-optimized for industrial motor control. Features isolated power and logic sections, integrated bootstrap diodes, and dedicated shunt-sensing terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRSM515-044DA2, the IRSM505-044DA2 adds critical thermal intelligence without increasing footprint; versus FAN7382MX, it delivers full integration - reducing bill-of-materials by 12+ components and eliminating layout-sensitive bootstrap tuning.

Availability

IRSM505-044DA2 is available at Aetrix Electronics and suitable for energy-efficient ceiling fan drives, compact HVAC blower motor controls, and smart appliance water pump inverters requiring stable component supply and long-lifecycle support.

Supply support for IRSM505-044DA2 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 global semiconductor leader specializing in power management, sensor, and automotive ICs, with deep expertise in intelligent power modules and motor control solutions.

The IRSM505-044 series belongs to Infineon's µIPM™-DIP product line, engineered specifically for cost-sensitive, space-constrained 3-phase BLDC/PMSM inverter applications in white goods and industrial small appliances.

FAQ

What is the function of the VTH pin on IRSM505-044DA2?

The VTH pin provides access to an integrated NTC thermistor (R₂₅ = 47kΩ ±5%) bonded directly to the power die. It outputs a voltage inversely proportional to junction temperature, enabling real-time thermal monitoring and overtemperature protection without external sensors or calibration. This pin is absent on IRSM515-044 variants.

Can IRSM505-044DA2 operate with a 3.3V microcontroller without level shifters?

Yes - all logic inputs (HINx, LINx) are fully 3.3V compatible with VIH(min) = 2.2V and VIL(max) = 0.8V. The module tolerates input voltages from 0V to VCC+0.3V (≤16.8V), eliminating need for level-shifting circuitry and simplifying interface with ARM Cortex-M or RISC-V MCUs.

How does the open-source configuration support current sensing?

The VR1, VR2, and VR3 pins expose the source nodes of the low-side MOSFETs, allowing direct connection of shunt resistors between each source and COM. This enables precise per-phase current measurement with minimal parasitic inductance, supporting both single-shunt (using one resistor) and three-shunt topologies for sensorless FOC algorithms.

What isolation standard does the 1900V_RMS rating meet?

The 1900V_RMS/1min isolation rating complies with IEC 60730-1 Annex H for automatic electrical controls in household appliances, including reinforced insulation requirements for functional safety. It has been validated across the DIP23A package creepage/clearance dimensions and internal molding compound properties.