Infineon Technologies IRAM256-2067A

Overview

IRAM256-2067A from International Rectifier is a 20A, 600V integrated power hybrid IC with open-emitter configuration, designed as a 3-phase inverter module for appliance motor drives. It integrates trench IGBTs, high-speed 3.3V-compatible gate drivers, bootstrap diodes, temperature monitoring (NTC), over-current protection, and under-voltage lockout in a thermally enhanced SIP1A package rated for 2000VRMS isolation and 125°C case operation.

For engineers reviewing the IRAM256-2067A datasheet, IRAM256-2067A pinout, IRAM256-2067A application, or IRAM256-2067A equivalent, key selection criteria include RMS current rating (20A @ TC=25°C), short-circuit withstand time (5µs @ 25°C), matched propagation delay (<75ns), CTI >600 insulation, and 3.3V Schmitt-triggered logic compatibility.

Technical Context

This module implements a fully isolated 3-phase inverter stage with six independent gate drivers-three high-side (HIN1–3) and three low-side (LIN1–3)-each featuring cross-conduction prevention logic and internal dead-time insertion (220–360ns). The driver core is derived from the IR21364 architecture, supporting 3.3V logic inputs and delivering matched turn-on/turn-off delays across all channels.

The power stage uses trench IGBTs with VCE(on) = 1.5V (typ.) at 7.5A/25°C and 1.7V at 150°C, paired with fast-recovery freewheeling diodes (TRR = 100ns typ., 150ns max @ 150°C). Protection functions include analog ITRIP-based over-current detection (0.49V threshold), FLT/EN fault reporting with 1.7ms clear time at 100°C, and thermal shutdown via integrated NTC (R25 = 47kΩ, B = 4050K).

Key Specifications

Pinout & Package

IRAM256-2067A is housed in a thermally enhanced Single In-line Package (SIP1A) with full transfer mold structure, offering creepage/clearance compliance and CTI >600. The package includes isolated copper baseplate for direct heatsink attachment and 28-pin vertical lead configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FSTB2067A and FSBB20CH60C, IRAM256-2067A uniquely combines trench IGBT efficiency, integrated NTC, and SIP1A open-emitter flexibility-enabling compact, thermally aware appliance motor drives without external protection or sensing components.

Availability

IRAM256-2067A is available at Aetrix Electronics and suitable for air conditioner compressor drives, washing machine drum motor controls, dishwasher circulation pumps, and refrigerator fan motor systems requiring stable component supply and long-term industrial lifecycle support.

Supply support for IRAM256-2067A 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

International Rectifier (now part of Infineon Technologies since 2015) specialized in high-performance power semiconductors and intelligent power modules for industrial, automotive, and consumer applications.

The IRAM series was developed specifically for energy-efficient white goods motor drives, integrating gate drivers, protection logic, and thermal monitoring into compact isolated packages to accelerate inverter design for HVAC and laundry systems.

FAQ

What is the maximum recommended PWM carrier frequency for IRAM256-2067A?

The datasheet specifies a maximum PWM carrier frequency of 20 kHz. This limit balances switching loss (ETOT = 395 µJ @ 25°C), thermal rise, and EMI performance. Operating above 20 kHz increases conduction losses due to higher gate charge (QG = 25 nC) and reduces efficiency without meaningful acoustic noise benefit in appliance motor applications.

How does the ITRIP protection function interface with external current sensing?

ITRIP accepts a voltage signal derived from a shunt resistor or current transformer secondary. With a 0.49V threshold and 70mV hysteresis, it triggers fault shutdown within 1.5 µs. External RC filtering (C7 = 2.2nF recommended) sets blanking time to avoid false trips during switching transients, and the FLT/EN pin asserts low to indicate latched or auto-recoverable fault states.

Can IRAM256-2067A be used with 5V logic controllers?

Yes-its 3.3V Schmitt-triggered inputs accept 5V logic levels safely, as VIN(max) is specified at 7V. However, the input thresholds (2.5V high, 0.8V low) and hysteresis ensure noise immunity only when driven with clean 3.3V signals; 5V sources should include series resistors or clamping to avoid exceeding absolute max ratings on sustained overvoltage.

What thermal interface material is recommended for the SIP1A baseplate?

A greased flat surface with thermal compound of ≥1 W/m·K conductivity is required, per the datasheet's Rθ(J–C) test condition. Recommended materials include Shin-Etsu G746 or Dow Corning TC-5122; uneven heatsink flatness (>100µm deviation) must be corrected to maintain Rθ(J–C) ≤3.6°C/W and prevent localized overheating at the IGBT die corners.