Infineon Technologies IRSM808-204MH

Overview

IRSM808-204MH from Infineon Technologies (formerly International Rectifier) is a 20A, 250V half-bridge intelligent power module (IPM) integrating trench MOSFETs and high-voltage gate drivers in an isolated PQFN-32 package. It delivers 0.15Ω max R_DS(on) at 25°C, supports 3.3V logic inputs, includes built-in bootstrap functionality and 1.3µs matched propagation delay, and operates without a heatsink in 80–200W motor drive applications such as energy-efficient HVAC blowers and circulation pumps.

For engineers reviewing the IRSM808-204MH datasheet, IRSM808-204MH pinout, IRSM804-204MH application, or IRSM808-204MH equivalent, key selection criteria include its 1500V_RMS isolation rating, 200V recommended DC bus voltage, 0.9–1.3µs internal deadtime, and compatibility with sinusoidal PWM modulation in space-constrained appliance inverters.

Technical Context

This IPM implements a fully integrated half-bridge topology with independent high-side (HIN) and low-side (LIN) logic inputs, active-high HIN and active-low LIN control, and on-chip under-voltage lockout for both V_CC and V_BS supplies. Its driver IC features matched turn-on/turn-off propagation delays (0.8–1.3µs) and optimized dV/dt characteristics to balance switching loss and EMI performance.

The module integrates bootstrap diodes and resistor (R_BR = 200Ω), enabling self-biased high-side gate drive without external charge pumps. It supports VS offset up to 200V referenced to COM and maintains logic operation across VS = COM−8V to COM+250V, making it suitable for three-phase inverter leg configurations with floating phase outputs.

Key Specifications

Pinout & Package

IRSM808-204MH uses a thermally enhanced PQFN-32 package (8×9mm footprint) with exposed thermal pad (Pin 32) requiring connection to COM for optimal electrical and thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge IPM applications.

Compared with FAN7382MX and FSB50825, IRSM808-204MH uniquely combines 250V/20A rating, 3.3V logic compatibility, integrated bootstrap, and 8×9mm PQFN packaging-enabling lowest component count and smallest PCB area in sub-200W appliance inverters.

Availability

IRSM808-204MH is available at Aetrix Electronics and suitable for energy-efficient ceiling fan inverters, compact refrigerator circulation pumps, smart HVAC blower modules, and small-appliance vacuum motor drives requiring stable component supply and industrial-grade qualification.

Supply support for IRSM808-204MH 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 heritage from International Rectifier's high-performance power device expertise.

The IRSM808 series belongs to Infineon's Intelligent Power Module product line, engineered specifically for cost-sensitive, space-constrained small-appliance motor drives requiring integrated gate drive, isolation, and thermal efficiency without external heatsinks.

FAQ

What is the maximum DC bus voltage supported by IRSM808-204MH?

The absolute maximum DC bus voltage is 250V (BVDSS), but the recommended operating condition specifies a maximum of 200V for reliable long-term operation. Exceeding 200V increases avalanche stress and reduces lifetime, especially at elevated junction temperatures. The module's 1500V_RMS isolation rating applies to input-output safety, not bus voltage endurance.

Can IRSM808-204MH operate with a 3.3V microcontroller without level shifters?

Yes. The HIN and LIN inputs are explicitly rated for 3.3V logic compatibility, with V_HIN("1") ≥ 2.2V and V_LIN("0") ≤ 0.8V at V_CC = 13.5–16.5V. No external level-shifting circuitry is required, enabling direct connection to standard ARM Cortex-M or PIC MCU GPIOs configured for push-pull output.

Does IRSM808-204MH require an external heatsink in typical applications?

No. The module is designed for heatsink-free operation in 80–200W motor drives when mounted on a 4-layer PCB with ≥200mm² of 2oz copper connected to the exposed thermal pad (Pin 32). Thermal resistance is specified as 1.3°C/W junction-to-pad, and derating curves in the datasheet confirm 20A continuous current capability at T_C = 100°C without forced air or heatsink.

How is deadtime controlled on IRSM808-204MH?

IRSM808-204MH includes an internal fixed deadtime of 0.9–1.3µs, selectable via the DT pin: connecting DT to V_CC enables the longer setting (~1.3µs), while grounding DT selects the shorter value (~0.9µs). This eliminates external deadtime generation circuitry and ensures consistent timing across temperature and supply variations, critical for low-EMI sinusoidal PWM.