These 40V power MOSFETs help stop unwanted switching caused by electrical noise, making motor control work better in drones, power tools, machines, and electric motors.
Vishay Intertechnology has introduced four new 40V TrenchFET Gen IV standard-level n-channel power MOSFETs—SIR5402DP, SIR5404DP, SIR5406DP, and SIR5408DP—designed for motor control applications operating in electrically noisy environments. Packaged in a compact 6.15mm × 5.15mm PowerPAK SO-8 single package, the devices are aimed at power electronics, motor control, and embedded system engineers developing brushless DC (BLDC) motor drives, power tools, drones, battery-powered equipment, and industrial automation systems. Engineers can use these MOSFETs to design synchronous rectification stages and DC-DC converters while improving switching reliability in applications where electrical noise can affect performance.
A key feature of the new MOSFETs is their minimum gate-source threshold voltage of more than 2.5V, which helps prevent false MOSFET triggering caused by gate noise in motor control circuits. The devices also feature Qgd/Qgs ratios of less than 1, reducing gate-induced voltage fluctuations and minimizing the effects of switching noise. Together, these characteristics help improve the stability and reliability of motor control systems, particularly in high-current and fast-switching applications.
To support different power and efficiency requirements, the MOSFETs are offered with a range of electrical characteristics. Typical on-resistance values range from 0.9mΩ to 2.5mΩ at a 10V gate drive, while gate charge values range from 32.6nC to 82nC. This allows designers to select a device that best balances conduction losses and switching performance for their application.
The SIR5402DP, SIR5404DP, SIR5406DP, and SIR5408DP are all 100% tested for RG and unclamped inductive switching (UIS) reliability to ensure consistent performance under demanding operating conditions. In addition, the devices are RoHS-compliant and halogen-free, making them suitable for use in designs that must meet environmental and regulatory requirements.
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