Infineon Technologies BSC022N03SG

Overview

BSC022N03SG from Infineon Technologies is an N-channel logic-level power MOSFET in a P-TDSON-8 package, optimized for high-efficiency notebook DC/DC converters and SMPS applications. It delivers 2.2 mΩ R_DS(on) at V_GS = 10 V, 50 A continuous drain current at T_C = 25 °C, and avalanche-rated ruggedness for reliable operation under transient stress.

For engineers reviewing the BSC022N03SG datasheet, BSC022N03SG pinout, BSC022N03SG application, or BSC022N03SG equivalent, key selection criteria include its gate charge × R_DS(on) figure of merit (FOM), dv/dt rating of 6 kV/µs, thermal resistance R_thJC = 1.2 K/W, and compatibility with 4.5 V logic-level drive in synchronous buck topologies.

Technical Context

This OptiMOS®2 device uses trench-gate superjunction technology to achieve ultra-low on-resistance and fast switching with low gate charge. Its 8-pin TDSON package features exposed drain pad for enhanced thermal performance and supports high-current synchronous rectification in compact DC/DC stages.

The MOSFET exhibits stable gate threshold voltage (1.2–2.0 V) over temperature, low reverse recovery charge (Q_rr = 20 nC), and robust 30 V V_(BR)DSS with 800 mJ single-pulse avalanche energy - enabling reliable operation in hard-switched and resonant converter designs.

Key Specifications

Pinout & Package

P-TDSON-8 (Power-Transistor Dual Small Outline No-lead, 8-pin) with thermally enhanced exposed drain pad (pins 1–3 and 5–7 are source; pin 4 is gate; pins 8 and internal die attach area are drain).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRLHS6242 and DMT6009LSD, BSC022N03SG offers the best balance of low R_DS(on), moderate Q_g, and industry-leading R_thJC, making it optimal for thermally constrained, high-current notebook and server VRMs where both conduction and thermal management are critical.

Availability

BSC022N03SG is available at Aetrix Electronics and suitable for notebook CPU voltage regulators, server point-of-load converters, and industrial SMPS requiring stable component supply and long-term production continuity.

Supply support for BSC022N03SG 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.

BSC022N03SG belongs to the OptiMOS®2 power MOSFET product line, engineered specifically for high-efficiency, high-current DC/DC conversion in portable computing and enterprise infrastructure applications.

FAQ

Is BSC022N03SG suitable for 4.5 V gate drive applications?

Yes. With a typical gate threshold voltage of 1.6 V and guaranteed R_DS(on) ≤ 3.3 mΩ at V_GS = 4.5 V and I_D = 50 A, BSC022N03SG fully enhances using standard 4.5 V logic-level drivers. Its low Q_g (43–58 nC) further ensures fast switching with minimal gate driver power consumption.

What is the maximum safe operating temperature for continuous operation?

The device supports continuous operation up to T_j = 150 °C. At T_C = 100 °C, it maintains 50 A continuous drain current. Thermal design must ensure junction temperature remains within this limit using the specified R_thJC = 1.2 K/W and appropriate PCB copper area (6 cm² recommended).

Does BSC022N03SG include an integrated body diode?

Yes. It features a monolithic parasitic body diode with 50 A continuous forward current rating and 0.81–1.0 V forward voltage at 50 A and 25 °C. The diode's Q_rr is 20 nC, enabling efficient synchronous rectification when paired with proper gate timing control.

Can BSC022N03SG replace older OptiMOS®1 devices in existing designs?

Yes, with verification. BSC022N03SG shares identical P-TDSON-8 footprint and pinout with BSC023N03LS and BSC024N03NS, offering improved R_DS(on) and lower Q_g. Layout compatibility is maintained, but gate drive timing and thermal margins should be re-evaluated due to faster switching and higher current density.