Infineon Technologies IRF7455

Overview

IRF7455 from Infineon Technologies (formerly International Rectifier) is a 30V, 15A logic-level N-channel HEXFET® Power MOSFET in SO-8 package, optimized for synchronous rectification in telecom 48V input DC-DC converters. It delivers R_DS(on) = 7.5 mΩ at V_GS = 10V and 9 mΩ at V_GS = 4.5V, with ultra-low gate charge (Q_g = 37–56 nC) and fast switching (t_r = 18 ns, t_f = 44 ns).

For engineers reviewing the IRF7455 datasheet, IRF7455 pinout, IRF7455 application, or IRF7455 equivalent, key selection criteria include its 4.5V logic-level gate drive compatibility, 120A pulsed drain current capability, avalanche-rated ruggedness (E_AS = 200 mJ), and thermal performance on standard PCBs (R_θJA = 50°C/W).

Technical Context

The IRF7455 is engineered for high-frequency synchronous buck and flyback topologies where low conduction and switching losses are critical. Its low R_DS(on) at 4.5V enables direct drive from PWM controllers without level-shifting, while its 100 pF Crss and 3480 pF Ciss support clean turn-on/turn-off transitions under 6.0 Ω gate resistance.

It integrates a fully characterized body diode with t_rr = 64–96 ns and Q_rr = 99–150 nC, enabling efficient reverse recovery in hard-switched synchronous rectifiers. The device is qualified for operation from –55°C to +150°C and supports unclamped inductive switching up to I_AS = 15A.

Key Specifications

Pinout & Package

IRF7455 uses the industry-standard SO-8 surface-mount package (JEDEC MS-012AA), with exposed drain pads on pins 1–4 and 6–8 for enhanced thermal and current handling. The package measures 4.98 mm × 6.20 mm × 1.75 mm and is RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel logic-level power MOSFET applications.

Compared with Si7852DP and DMN3025LSD, the IRF7455 offers balanced trade-offs: moderate R_DS(on), low Q_g, and industry-leading E_AS-making it optimal for telecom and industrial SMPS where reliability under transient overload is critical.

Availability

IRF7455 is available at Aetrix Electronics and suitable for telecom 48V DC-DC converters, server VRM synchronous rectifiers, and industrial PoE++ PSE controllers requiring stable component supply and long-term lifecycle support.

Supply support for IRF7455 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 headquartered in Munich, Germany, specializing in power management, sensor, and automotive ICs with emphasis on energy efficiency and system reliability.

The IRF7455 belongs to Infineon's HEXFET® logic-level MOSFET product line, designed specifically for high-frequency, high-efficiency DC-DC conversion in telecom, computing, and industrial power systems.

FAQ

What is the maximum gate-source voltage rating for IRF7455?

The absolute maximum V_GS rating is ±12 V. Exceeding this value risks permanent gate oxide damage. For reliable operation, gate drive should be clamped within –10 V to +10 V, especially during fast switching transients where ringing may occur. The device's gate threshold voltage (0.6–2.0 V) ensures turn-on with standard 3.3V or 5V logic signals.

Can IRF7455 be used in parallel configurations?

Yes-its positive temperature coefficient of R_DS(on) (0.029 V/°C) enables inherent current sharing when multiple devices are paralleled. However, matched gate drive layout (equal trace length/impedance) and symmetrical thermal mounting are essential to prevent thermal runaway. Derate total current by 15% per additional device beyond two.

Does IRF7455 have a specified reverse recovery time for its body diode?

Yes-t_rr is specified as 64–96 ns at T_J = 25°C, I_F = 2.5A, and di/dt = 100 A/µs. This parameter is fully characterized and supports timing analysis for synchronous rectifier dead-time optimization. Q_rr is also specified (99–150 nC), enabling accurate loss estimation in hard-switched topologies.

Is IRF7455 suitable for automotive applications?

While not AEC-Q101 qualified, the IRF7455 operates across –55°C to +150°C junction temperature and meets key automotive thermal and avalanche requirements. It has been widely deployed in non-safety-critical automotive DC-DC modules (e.g., infotainment, lighting). For ASIL-B/C systems, AEC-Q101-qualified alternatives like IPB120N04S4-H0 are recommended.