Infineon IPZ40N04S5-5R4: 40V OptiMOS 5 Power MOSFET for High-Efficiency Power Conversion

In the realm of power electronics, achieving higher efficiency and power density is a constant pursuit. The Infineon IPZ40N04S5-5R4, a 40V N-channel power MOSFET from the advanced OptiMOS™ 5 technology family, stands out as a pivotal component engineered to meet these demanding goals. This MOSFET is specifically designed to minimize power losses and maximize performance in a compact footprint, making it an ideal choice for a wide array of modern power conversion applications.

The core strength of the IPZ40N04S5-5R4 lies in its exceptionally low figure-of-merit (FOM), which is a key indicator of switching performance. By achieving an outstandingly low on-state resistance (R DS(on)) of just 1.4 mΩ (max. at 10 Vgs) in conjunction with low gate charge (Q G), this device significantly reduces both conduction and switching losses. This translates directly into higher overall system efficiency, less heat generation, and the potential for designers to create smaller, cooler-running power supplies without sacrificing performance.

This combination of low losses and high switching speed makes the IPZ40N04S5-5R4 exceptionally versatile. It is perfectly suited for demanding tasks such as:

Synchronous rectification in switched-mode power supplies (SMPS) for servers, telecom, and industrial equipment.

DC-DC conversion stages in automotive systems, including 48V mild-hybrid architectures and battery management.

Motor drive and control circuits, where efficient switching is crucial for performance and thermal management.

High-current load switching in power tools and other consumer applications.

Furthermore, the device is housed in an Infineon’s proprietary SuperSO8 package (PG-TSON-8), which offers a superior thermal resistance compared to standard SO-8 packages. This enhanced thermal capability allows for better heat dissipation, enabling higher power throughput and improved reliability under strenuous operating conditions.

ICGOOODFIND: The Infineon IPZ40N04S5-5R4 is a superior 40V power MOSFET that sets a high bar for efficiency and power density. Its exceptional blend of ultra-low R DS(on), minimal switching losses, and excellent thermal performance makes it a top-tier solution for designers aiming to push the boundaries in next-generation power conversion systems across automotive, industrial, and computing markets.

Keywords: Power MOSFET, High Efficiency, OptiMOS™ 5, Low RDS(on), Synchronous Rectification.