Infineon Technologies IPB65R125C7ATMA1

Overview

IPB65R125C7ATMA1 from Infineon Technologies is a 650 V, 125 mΩ superjunction N-channel power MOSFET in the CoolMOS™ C7 family, designed for high-efficiency hard-switching and PFC applications. It delivers 75 A pulsed drain current, 35 nC total gate charge, and 4.2 µJ output switching energy at 400 V, enabling compact, high-frequency SMPS designs in telecom and server power supplies.

For engineers reviewing the IPB65R125C7ATMA1 datasheet, IPB65R125C7ATMA1 pinout, IPB65R125C7ATMA1 application, or IPB65R125C7ATMA1 equivalent, key selection criteria include R_DS(on) vs. temperature stability, dv/dt ruggedness (100 V/ns), body diode commutation speed (55 A/µs), and thermal resistance (1.24 °C/W junction-to-case).

Technical Context

This CoolMOS™ C7 device implements a superjunction architecture optimized for reduced R_DS(on) × Q_g and R_DS(on) × E_oss figures of merit, supporting higher switching frequencies without sacrificing conduction loss. Its gate threshold voltage (3.5 V typ) and plateau voltage (5.4 V) enable robust drive with standard 12 V gate drivers.

The MOSFET features enhanced avalanche ruggedness (89 mJ single-pulse E_AS) and high dv/dt immunity (100 V/ns), making it suitable for asymmetric half-bridge and totem-pole PFC topologies where voltage transients and commutation stress are critical.

Key Specifications

Pinout & Package

IPB65R125C7ATMA1 uses the PG-TO263 (D²PAK) package with exposed drain tab for thermal and electrical connection. The plastic body provides isolation while the copper tab ensures low-inductance, high-current drain path and efficient heat transfer to the PCB heatsink.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage power switching applications.

Compared with STW65N60DM6 and IXFH60N60X3, IPB65R125C7ATMA1 offers the best balance of R_DS(on) × Q_g (4.375 Ω·nC) and dv/dt immunity-making it optimal for industrial PFC and hard-switched SMPS where reliability and mid-frequency efficiency are jointly critical.

Availability

IPB65R125C7ATMA1 is available at Aetrix Electronics and suitable for server power supplies, telecom rectifiers, solar DC-DC converters, and UPS input stages requiring stable component supply and long-term industrial-grade availability.

Supply support for IPB65R125C7ATMA1 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 and discrete devices, with global manufacturing and R&D infrastructure.

The CoolMOS™ C7 series targets high-efficiency, high-reliability AC-DC and DC-DC conversion in computing, telecom, and renewable energy systems-emphasizing low-loss superjunction performance and robust hard-switching behavior.

FAQ

What is the maximum continuous drain current at 100°C case temperature?

The maximum continuous drain current (I_D) is 12 A at T_C = 100°C, as specified in Table 2 of the datasheet. This rating accounts for thermal derating due to junction-to-case thermal resistance (1.24 °C/W) and safe operating area limits under DC conditions.

Does IPB65R125C7ATMA1 require a gate resistor for stability in hard-switching applications?

Yes-a gate resistor (typically 5–15 Ω) is recommended to dampen ringing, control dV/dt during turn-on/off, and prevent parasitic oscillation. The device's 1 Ω typical gate resistance and 1670 pF input capacitance make external RG essential for reliable operation with standard gate drivers.

Can this MOSFET be paralleled for higher current handling?

Yes, but with precautions: gate ferrite beads or individual totem-pole drivers are recommended per gate to ensure balanced dynamic current sharing. The device's positive R_DS(on) temperature coefficient supports static current sharing, but layout symmetry and gate loop inductance matching are critical.

Is the drain tab electrically isolated from the package leads?

No-the drain is internally connected to the exposed copper tab and Pin 2. The tab must be mounted to a thermally conductive, electrically isolated heatsink or directly to a PCB copper pour with appropriate isolation barriers, as it carries full high-voltage drain potential.