Infineon Technologies IRAM256-2067A2

Overview

IRAM256-2067A2 from Infineon Technologies (formerly International Rectifier) is a 20A, 600V integrated power module combining three Trench IGBTs, high-voltage gate drivers, bootstrap diodes, temperature monitoring, and over-current protection in a single isolated SIP1A package. It delivers fail-safe 3-phase motor drive for energy-efficient air conditioners and washing machines with 1.5kW output at 85–253 Vac input.

For engineers reviewing the IRAM256-2067A2 datasheet, IRAM256-2067A2 pinout, IRAM256-2067A2 application, or IRAM256-2067A2 equivalent, key selection criteria include its 2000VRMS isolation, 125°C max case temperature, matched 1.15 µs propagation delay across all six channels, and integrated NTC thermistor with R25 = 47 kΩ.

Technical Context

This hybrid IC integrates three half-bridge inverter legs with open-emitter outputs, each featuring short-circuit-rated 600V Trench IGBTs (VCE(on) = 1.5 V @ 7.5A, 25°C) and fast-recovery freewheeling diodes (TRR = 100 ns). The driver section supports 3.3V Schmitt-triggered logic inputs and includes cross-conduction prevention with 290 ns internal dead time.

Protection architecture combines under-voltage lockout on all supplies (VCC/VBS UVLO = 10.9 V ±0.2 V), a dedicated ITRIP pin with 0.49 V threshold and 150 ns blanking time, and a fault latch via FLT/EN pin. Thermal management is enabled by an embedded NTC (B = 4050 K) and low thermal resistance (RθJ-C = 3.0 °C/W per IGBT).

Key Specifications

Pinout & Package

IRAM256-2067A2 uses a SIP1A (Single In-line Package) with full transfer mold structure and CTI > 600, enabling compact PCB layout and direct heatsink mounting without additional isolation barriers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FST10010A and FSBB20CH60C, IRAM256-2067A2 uniquely integrates ITRIP-based overcurrent protection, 3.3V logic, and 125°C thermal rating in one SIP1A package-reducing component count by ≥7 parts and enabling faster time-to-certification for Class I appliances.

Availability

IRAM256-2067A2 is available at Aetrix Electronics and suitable for air conditioner compressors, washing machine drum motors, heat pump circulators, and refrigerator fan systems requiring stable component supply and long-term industrial lifecycle support.

Supply support for IRAM256-2067A2 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 high-voltage power modules and motor control solutions.

The IRAM series was developed specifically for cost-sensitive, high-reliability white goods motor drives-emphasizing integration density, thermal robustness, and safety-compliant isolation in compact SIP packages.

FAQ

What is the maximum recommended PWM carrier frequency for IRAM256-2067A2?

The datasheet specifies a maximum PWM carrier frequency of 20 kHz. This limit balances switching loss (ETOT = 395 µJ @ 25°C) against thermal dissipation in the 3.0 °C/W IGBT thermal path. Operating above 20 kHz increases core and conduction losses disproportionately and may exceed safe junction temperature limits under full-load conditions.

How does the ITRIP pin function, and what external components are required?

The ITRIP pin accepts a voltage signal derived from a shunt resistor placed in series with the low-side emitter path. With a fixed 0.49 V threshold and 150 ns blanking time, it triggers immediate shutdown upon overcurrent. No external comparator or latch is needed-only a precision shunt (e.g., 5 mΩ, 1% tolerance) and RC filter matching the 1 nF recommended C6 capacitor value.

Can IRAM256-2067A2 be used with 3.3V microcontrollers without level shifting?

Yes. All logic inputs (HIN1–3, LIN1–3, FLT/EN, ITRIP) are 3.3V Schmitt-trigger compatible with VIH = 2.5 V and VIL = 0.8 V. The device draws only 100 µA input bias current at 3.3V, eliminating the need for buffer drivers or level translators in typical MCU interfacing scenarios.

What is the purpose of the VTH pin, and how is it calibrated?

VTH connects directly to an internal NTC thermistor (R25 = 47 kΩ, B = 4050 K). When biased with a 10 kΩ pull-up to VCC, it forms a voltage divider whose output varies predictably with case temperature. Calibration uses the standard Steinhart-Hart equation with coefficients derived from R25 and B-value-no factory trimming or lookup tables are required.