Infineon Technologies IRSM807-045MHTR

Overview

IRSM807-045MHTR from Infineon Technologies (formerly International Rectifier) is a 4A, 500V half-bridge intelligent power module integrating dual gate drivers, bootstrap diode/resistor, under-voltage lockout, and matched propagation delay in an isolated 32-lead PQFN (8×9 mm) package. It drives single-phase BLDC or PMSM motors in energy-efficient small appliances such as inline fans and circulation pumps without requiring external heat sinking.

For engineers reviewing the IRSM807-045MHTR datasheet, IRSM807-045MHTR pinout, IRSM807-045MHTR application, or IRSM807-045MHTR equivalent, key selection criteria include its 1.5 Ω R_DS(on) at 25°C, 1500 V_RMS isolation rating, 3.3 V logic compatibility, integrated bootstrap functionality, and operation up to 20 kHz PWM carrier frequency in space-constrained motor drive designs.

Technical Context

This module implements a high-side/low-side Trench FREDFET half-bridge with monolithically integrated HV gate drivers and bootstrap circuitry. Its dual-channel UVLO (8.9 V turn-on, 7.7 V turn-off) and matched 0.9–1.5 µs propagation delays ensure robust shoot-through prevention and synchronized switching across voltage domains.

The device operates with floating high-side supply referenced to VS, supports ±8 V offset tolerance on VS relative to COM, and delivers rated 4 A DC output current at T_C = 25°C with junction temperature range from –40°C to +150°C. Thermal resistance to case bottom is 1.55 °C/W, enabling conduction-cooled operation.

Key Specifications

Pinout & Package

IRSM807-045MHTR uses a 32-lead PQFN package (8 mm × 9 mm, 0.55 mm height) with exposed thermal pad on bottom side for direct PCB copper thermal coupling. The package provides galvanic isolation between power and logic domains.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRSM807-045MHTR, IRSM808-045MHTR offers higher current headroom in identical footprint, while FAN7382MX trades integration for topology freedom-neither is pin-compatible, and both require revalidation of gate drive loop and thermal layout.

Availability

IRSM807-045MHTR is available at Aetrix Electronics and suitable for small appliance motor drive, HVAC fan control, and circulation pump applications requiring stable component supply, industrial-grade qualification (MSL3, RoHS), and long-term lifecycle continuity.

Supply support for IRSM807-045MHTR 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 heritage from International Rectifier's high-voltage power solutions.

The IRSM series targets cost-sensitive, space-constrained appliance motor drives, combining trench FREDFETs and rugged gate drivers to replace discrete half-bridge designs with minimal external components.

FAQ

What is the maximum allowable DC bus voltage for continuous operation?

The IRSM807-045MHTR is rated for 500 V BVDSS and specified for recommended operation up to 400 V DC bus voltage. Sustained operation above 400 V risks exceeding safe operating area limits due to increased avalanche stress and reduced thermal margin, even if within absolute maximum ratings.

Can the module operate without an external bootstrap capacitor?

No. Although the module integrates a 200 Ω bootstrap resistor and diode, an external ceramic bootstrap capacitor (typically 0.22–0.47 µF, X7R, 25 V) must be connected between VB and VS pins to sustain high-side gate drive during continuous conduction. Omission causes immediate high-side FET failure.

Is the 1500 VRMS isolation rating certified to IEC 60747-5-2?

Yes. The 1500 VRMS isolation is characterized per IEC 60747-5-2 for reinforced insulation and validated during qualification. It applies to creepage/clearance across the internal mold compound and meets EN 60335-1 requirements for household appliance motor drives.

Does the module support 100% duty cycle on the low-side FET?

Yes. The low-side FET can be held continuously ON because its source (V−) is referenced to COM, eliminating bootstrap dependency. However, high-side operation remains limited to <99% duty cycle due to bootstrap capacitor recharge requirements via the internal diode.