Infineon Technologies IRSM505-084DA2

Overview

IRSM505-084DA2 from Infineon Technologies (formerly International Rectifier) is a 250V, 3-phase integrated power module (IPM) with integrated high-voltage gate drivers, 0.45Ω max R_DS(on) trench MOSFETs, and on-board NTC thermistor for temperature feedback. It delivers 4.6A DC per phase at 25°C, supports 20kHz PWM carrier frequency, and is rated for 1900V_RMS isolation - designed specifically for energy-efficient small-appliance motor drives including brushless DC fans and circulation pumps.

For engineers reviewing the IRSM505-084DA2 datasheet, IRSM505-084DA2 pinout, IRSM505-084DA2 application, or IRSM505-084DA2 equivalent, key selection criteria include its DIP23A package footprint, matched propagation delay across all six channels, integrated bootstrap functionality, 3.3V logic compatibility, and VTH thermistor output for thermal monitoring in compact BLDC inverter designs.

Technical Context

This IPM integrates three half-bridge HVICs with independent high-side floating supplies (VB1–VB3), low-side logic supplies (VCC1–VCC3), and dedicated input pins (HIN/LIN per phase) to drive external 3-phase motor windings. Each channel features under-voltage lockout with 1.2V hysteresis and tolerance to negative transient voltage at -Vs.

The module implements optimized dV/dt control for EMI reduction and loss trade-offs, open-source configuration for single-leg or shunt-based current sensing (pins VR1–VR3, U/VS1–W/VS3), and internal bootstrap resistor (250Ω typical) to simplify external component count in compact inverter layouts.

Key Specifications

Pinout & Package

DIP23A package: 23-pin dual-in-line, 0.3-inch body width, through-hole mounting with staggered lead pitch for creepage/clearance compliance in high-voltage motor drive PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRSM515-084DA2, the IRSM505-084DA2 adds thermal monitoring without increasing footprint or cost significantly; versus FAM68126A, it offers lower conduction loss and drop-in compatibility in DIP23A layouts but lacks 600V headroom for industrial surge environments.

Availability

IRSM505-084DA2 is available at Aetrix Electronics and suitable for energy-efficient ceiling fan drives, compact circulation pump inverters, and smart HVAC blower modules requiring stable component supply and long-term lifecycle support.

Supply support for IRSM505-084DA2 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, automotive, and industrial control solutions, with core expertise in high-voltage power integration and intelligent motion control.

The IRSM505-084 series belongs to Infineon's µIPM™-DIP product line, engineered for compact, high-efficiency BLDC motor drives in cost-sensitive, space-constrained consumer appliances.

FAQ

What is the maximum continuous DC current per phase for IRSM505-084DA2?

The absolute maximum DC output current per MOSFET is 4.6A at T_C = 25°C. Derating is required above 25°C case temperature; at 100°C case, continuous current drops to approximately 2.8A due to thermal limits and R_DS(on) increase. This rating assumes proper heatsinking and 1900V_RMS isolation compliance.

Does IRSM505-084DA2 require external bootstrap diodes?

No. The module integrates internal bootstrap diodes and a 250Ω equivalent resistor, eliminating the need for external bootstrap components. Only external bootstrap capacitors (typically 0.1–0.22µF ceramic) are required per high-side supply (VB1–VB3) to sustain gate drive during high-duty-cycle operation.

How is the VTH pin used for temperature monitoring?

VTH connects to an internal 47kΩ NTC thermistor (±5% at 25°C, B=4050K). A simple voltage divider with a fixed resistor (e.g., 47kΩ to VCC) generates a ratiometric analog output. The resulting voltage scales linearly with temperature from −40°C to +125°C, enabling MCU ADC-based thermal protection without calibration.

Can IRSM505-084DA2 be used with 3.3V microcontrollers without level shifters?

Yes. Its HIN/LIN inputs have 2.2V+ and 0.8V− logic thresholds, fully compatible with standard 3.3V CMOS outputs. The 200–300ns input filter also suppresses GPIO noise, making external Schmitt triggers unnecessary in typical MCU-driven BLDC applications.