Infineon Technologies IRSM515-044DA-INF

Overview

IRSM515-044DA-INF from Infineon Technologies (formerly International Rectifier) is a 250V, 3-phase integrated power module (IPM) for brushless DC motor drives in small appliances. It integrates six Trench FREDFETs with matched 1.0Ω max R_DS(on) at 25°C, three half-bridge high-voltage gate drivers, bootstrap circuitry, and under-voltage lockout on all channels-optimized for energy-efficient fans and pumps operating up to 20 kHz PWM.

For engineers reviewing the IRSM515-044DA-INF datasheet, IRSM515-044DA-INF pinout, IRSM515-044DA-INF application, or IRSM515-044DA-INF equivalent, key selection criteria include its DIP23A package, 1900V_RMS isolation, 3.3V logic compatibility, open-source shunt sensing capability, and absence of integrated NTC thermistor-distinguishing it from the IRSM505-044 series.

Technical Context

The IRSM515-044DA-INF implements three independent half-bridge HVICs driving low-R_DS(on) FREDFETs in a single DIP23A module. Each channel features matched propagation delay (0.7–1.5 µs), integrated bootstrap diodes/resistors (R_BR = 250 Ω), and ±20 V high-side floating supply tolerance (VS1/2/3).

It supports 3.3V logic inputs with advanced input filtering (300 ns typical), 400 ns internal deadtime insertion, and robust negative transient voltage tolerance on -Vs pins. Thermal resistance is 7.9 °C/W (junction-to-case, high-side V-phase), enabling operation from –40°C to 150°C case temperature.

Key Specifications

Pinout & Package

The IRSM515-044DA-INF uses a 23-pin DIP23A through-hole package with creepage/clearance optimized for 250 V AC mains-referenced systems. Pin 11 is NC (no connection), confirming absence of NTC thermistor output-differentiating it from IRSM505-044 variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRSM505-044DA, the IRSM515-044DA omits the NTC output-reducing test overhead and cost-while retaining identical drive performance and isolation. Against FAN7382MX, it trades design flexibility for faster time-to-market and lower system-level EMI due to co-packaged FETs and optimized gate loop inductance.

Availability

IRSM515-044DA-INF is available at Aetrix Electronics and suitable for energy-efficient ceiling fan drives, compact condenser pump controls, and smart exhaust fan modules requiring stable component supply and industrial-grade qualification.

Supply support for IRSM515-044DA-INF 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 acquired International Rectifier in 2015 and continues to develop and support its high-performance power semiconductor portfolio, including intelligent power modules for motor control.

The IRSM5xx-044 series belongs to Infineon's µIPM™ family, engineered specifically for cost-sensitive, space-constrained BLDC motor drives in white goods and HVAC equipment-emphasizing integration, reliability, and ease of use.

FAQ

What is the maximum DC bus voltage supported by IRSM515-044DA-INF?

The absolute maximum drain-to-source breakdown voltage (BVDSS) is 250 V, and the recommended operating condition specifies a maximum V+ of 200 V DC. This 200 V limit ensures sufficient margin against voltage spikes and maintains long-term reliability in appliance-grade 230 V AC rectified bus applications.

Does IRSM515-044DA-INF require external bootstrap capacitors?

No-internal bootstrap functionality includes integrated diodes and a 250 Ω equivalent resistor, eliminating the need for external bootstrap diodes and reducing required capacitor size. A single 0.22 µF ceramic capacitor per VB pin is still recommended for local charge storage and noise suppression.

Can IRSM515-044DA-INF be used with 3.3 V microcontrollers without level shifting?

Yes-the HIN/LIN inputs are fully 3.3 V logic compatible with VIN thresholds of 2.2 V (positive-going) and 0.8 V (negative-going). No external level shifters are needed when interfacing with standard 3.3 V MCUs such as STM32G4 or NXP S32K144.

How does the absence of NTC affect thermal monitoring in IRSM515-044DA-INF?

Pin 11 is NC (not connected), so no integrated temperature feedback is provided. System-level thermal protection must rely on external NTCs, MCU ADC sampling of phase currents, or ambient temperature sensors-making it suitable for applications where junction temperature estimation via power loss modeling is acceptable.