Infineon Technologies IRDM982-025MBTR

Overview

IRDM982-025MBTR from Infineon is a fully integrated 3-phase PM motor controller module for AC fan applications, featuring six 500V/2A MOSFETs, Hall-sensor-based sinusoidal commutation, quadratic phase advance control, 15V single-supply operation, and on-chip 3.3V regulator. It implements fixed-function digital control with 16 pre-stored load curves selectable via resistor pairs and operates without firmware programming.

For engineers reviewing the IRDM982-025MBTR datasheet, IRDM982-025MBTR pinout, IRDM982-025MBTR application, or IRDM982-025MBTR equivalent, key selection criteria include its 500V VOFFSET rating, PQFN-12×12mm thermal design eliminating external heatsink, Hall sensor interface (HALL1+/− to HALL3+/−), dynamic overcurrent protection tied to internal temperature sensing, and DIR-controlled bidirectional motor operation.

Technical Context

The IRDM982-025MBTR integrates a high-voltage IC with six discrete 500V/2A power MOSFETs and a digital motion controller executing Hall-based sinusoidal commutation. Its PLL-based clock synthesis accepts 32.768 kHz reference via XTAL/CLKIN pins, and internal ADC digitizes VSP (speed command), EFF (load curve selection), and die temperature for adaptive overcurrent limiting.

Protection logic includes undervoltage lockout on both 15V (VCC) and 3.3V (VDD) rails, rotor lock detection, overspeed shutdown, and thermal foldback triggered by on-die temperature sensor. The gate driver supports full three-phase high/low-side drive with integrated bootstrap FETs emulating diode function, enabling self-biasing of high-side drivers without external components.

Key Specifications

Pinout & Package

IRDM982-025MBTR uses a thermally enhanced 12 mm × 12 mm PQFN package with exposed thermal pad (pin 1–40 layout per datasheet Figure 2). The package enables direct PCB heat spreading without heatsink, meeting industrial thermal requirements under full-load conditions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PM fan motor control applications.

Compared with IRDM982-035MBTR, the -025MBTR offers lower conduction loss at light loads and tighter thermal footprint; versus STSPIN32F0A, it delivers faster time-to-market and guaranteed functional safety compliance without software validation overhead.

Availability

IRDM982-025MBTR is available at Aetrix Electronics and suitable for AC fan motor control, industrial blower systems, and server rack cooling applications requiring stable component supply, long-lifecycle support, and industrial-grade qualification.

Supply support for IRDM982-025MBTR 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 German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-voltage integration and motor control solutions.

The IRDM982 series belongs to Infineon's iMOTION™ motion control platform, designed specifically for cost-sensitive, high-reliability permanent magnet fan applications where minimal external components and zero firmware development are critical.

FAQ

What is the maximum continuous motor current supported by IRDM982-025MBTR?

The device integrates six 500V/2A MOSFETs rated for 2A continuous drain current per switch under specified thermal conditions. Actual motor phase current capability depends on PCB copper area, ambient temperature, and switching frequency; typical sustained output is 1.8A RMS per phase at 25°C ambient with 2 oz copper and 4-layer board stack-up.

Does IRDM982-025MBTR require an external crystal or can it use an RC network for clock generation?

It supports both: a 32.768 kHz crystal connected between XTAL and CLKIN pins, or an RC network (R = 1 MΩ, C = 12 pF typical) from CLKIN to ground with XTAL left unconnected. The internal PLL synthesizes a stable 10 MHz system clock from either source, ensuring deterministic timing for Hall interpolation and PWM generation.

How is motor direction controlled, and what voltage levels are valid for the DIR pin?

Direction is set by the DIR digital input: logic high (≥2.0V) commands clockwise rotation, logic low (≤0.8V) commands counterclockwise. The pin is 3.3V-tolerant with internal pull-down; no external resistor is required. Direction change occurs synchronously with next Hall state transition to prevent torque disruption.

Can the IRDM982-025MBTR operate without Hall sensors?

No - the control algorithm is strictly Hall-sensor-based and requires all three differential Hall inputs (HALL1±, HALL2±, HALL3±) for rotor position detection and commutation timing. There is no sensorless BEMF detection mode or alternate feedback interface; omission of any Hall pair will result in failed startup or erratic operation.