The BUK9Y11-30B is a Trench MOSFET from Nexperia (originally Fairchild/ON Semiconductor). It's designed for high-efficiency switching applications, offering low on-state resistance and fast switching speeds.

Applications

• Synchronous rectification in AC-DC and DC-DC converters.
• Motor control applications.
• Load switches.
• Power OR-ing.
• Battery management systems.
• DC-DC conversion in telecom and server power supplies.

Features

• Trench MOSFET Technology: Provides low on-state resistance and fast switching.
• Low On-State Resistance (RDS(on)): Minimizes conduction losses.
• Fast Switching Speed: Reduces switching losses.
• Logic Level Gate Drive: Allows direct driving from microcontrollers.
• Avalanche Rated: Provides robustness against voltage transients.
• Lead-Free and RoHS Compliant: Environmentally friendly.

Benefits

• High Efficiency: Low RDS(on) and fast switching minimize power losses, leading to higher efficiency.
• Reduced Heat Dissipation: Low RDS(on) reduces heat generation, simplifying thermal management.
• Simplified Design: Logic level gate drive simplifies interface with control circuitry.
• Increased Reliability: Avalanche rating provides robustness against voltage transients.
• Compact Design: Allows for smaller and more efficient power supply designs.

Additional Details

The BUK9Y11-30B is an N-channel MOSFET with a drain-source voltage (VDS) of 30V and a continuous drain current (ID) of up to 40A (depending on package and thermal conditions). It has a very low on-state resistance (RDS(on)) of typically 11 mOhms at a gate-source voltage (VGS) of 10V. The gate threshold voltage (VGS(th)) is typically around 2V, making it suitable for logic-level gate drive. It is available in a LFPAK33 package, which offers excellent thermal performance. This MOSFET is designed for high-efficiency power conversion applications and provides a robust and reliable solution for power management systems.