Infineon Technologies IRG4PSH71UPBF

Overview

IRG4PSH71UPBF from Infineon Technologies (formerly International Rectifier) is a 1200V, 99A n-channel UltraFast IGBT in Super-247 (TO-274AA) package, optimized for hard-switching up to 40kHz and resonant-mode soft-switching up to 200kHz. It delivers V_CE(on) = 2.50V @ 15V gate drive and 50A, R_θJC = 0.36°C/W, and 150mJ reverse avalanche energy - enabling high-efficiency motor drives and induction heating inverters.

For engineers reviewing the IRG4PSH71UPBF datasheet, IRG4PSH71UPBF pinout, IRG4PSH71UPBF application, or IRG4PSH71UPBF equivalent, key selection criteria include its 1200V blocking rating, ultrafast switching with 51ns turn-on delay and 170ns fall time, tight parameter distribution from Gen 4 IGBT design, and validated clamped inductive load capability up to 200A.

Technical Context

This Generation 4 IGBT uses field-stop trench-gate structure to minimize conduction and switching losses simultaneously. Its 5.35mm creepage distance and Super-247 package support high-voltage isolation in compact industrial inverters.

The device features negative temperature coefficient of V_CE(on) (−9.2 mV/°C threshold shift), enabling inherent current sharing in parallel configurations. Gate charge parameters (Q_g = 370–560 nC, Q_gc = 120–50 nC) are tuned for low E_on/E_off trade-off at 960V bus voltage and 5Ω gate resistance.

Key Specifications

Pinout & Package

IRG4PSH71UPBF uses the Super-247 (TO-274AA) package: 4-pin, isolated mounting base, 20.8 mm × 14.8 mm footprint, 16.1 mm height, 6 g weight. Pin 1 = Gate, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector (Kelvin sense connection).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IGBT switching applications.

Compared with IXGN75N120B3 and STGW40H12DF2, IRG4PSH71UPBF uniquely combines 99A current rating, Kelvin collector for noise-immune gate control, and 200kHz soft-switching capability - making it the only option qualified for high-density, paralleled, high-frequency industrial inverter designs.

Availability

IRG4PSH71UPBF is available at Aetrix Electronics and suitable for industrial motor drives, induction heating inverters, uninterruptible power supplies, and solar microinverters requiring stable component supply across multi-year production cycles.

Supply support for IRG4PSH71UPBF 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 semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy markets.

This device belongs to Infineon's Generation 4 UltraFast IGBT product line, designed specifically for high-efficiency, high-frequency inverters in industrial automation and renewable energy systems where switching speed, thermal performance, and ruggedness are co-optimized.

FAQ

What is the maximum recommended gate resistor value for reliable turn-off?

The datasheet specifies 5.0Ω as the test condition for switching loss characterization. For reliable turn-off with minimal oscillation, a gate resistor between 3.3Ω and 6.8Ω is recommended. Values above 10Ω increase t_d(off) beyond 390ns and risk incomplete turn-off under high dV/dt conditions, especially when paralleling multiple devices.

Can IRG4PSH71UPBF be used without a snubber circuit in hard-switching applications?

Yes - its 1200V V_CES rating and 150mJ avalanche energy allow operation without external snubbers in 400–800V DC bus applications up to 8kHz. However, for 960V bus voltages or frequent short-circuit events, a 100Ω/100pF RC snubber across C–E is recommended to limit dV/dt stress during turn-off.

Does the Kelvin collector pin require separate PCB routing?

Yes - Pin 4 must be routed separately from main collector traces and connected directly to the gate driver's high-side return. This isolates gate loop inductance from power loop inductance, reducing Miller-induced false turn-on. Shared routing voids the 5.35mm creepage compliance and degrades switching stability above 10kHz.

What is the minimum heatsink thermal resistance required for continuous 99A operation?

At T_C = 25°C, P_D = 350W. With R_θJC = 0.36°C/W and max T_J = 150°C, the heatsink-to-ambient resistance must be ≤0.35°C/W to maintain T_C ≤ 25°C. In practice, a forced-air heatsink with R_θSA ≤ 0.5°C/W and thermal interface material (0.1°C·in²/W) is required for sustained 99A conduction at 40°C ambient.