Harnessing the PowerTrench™ Advantage: onsemi FDMC86116LZ for Next-Generation Power Conversion

In the relentless pursuit of higher efficiency and power density in modern electronic systems, the choice of switching MOSFETs is paramount. The onsemi FDMC86116LZ, built upon the advanced PowerTrench® MOSFET technology, stands out as a premier solution engineered to meet the rigorous demands of high-efficiency power conversion applications, from compact AC-DC adapters to sophisticated server power supplies.

This device exemplifies a significant leap in performance, primarily due to its exceptionally low figure-of-merit (FOM), a critical parameter combining on-resistance (RDS(ON)) and gate charge (Qg). The FDMC86116LZ boasts an impressively low RDS(ON) of just 2.8 mΩ at a 10V gate drive, coupled with a low total gate charge (Qg). This optimal balance is the cornerstone of its efficiency. The reduced RDS(ON) minimizes conduction losses when the MOSFET is fully on, allowing it to handle high currents with minimal voltage drop and heat generation. Simultaneously, the low gate charge ensures swift switching transitions, drastically cutting switching losses that dominate at higher frequencies. This enables designers to push switching frequencies higher without a punitive efficiency penalty, leading to the use of smaller passive components like inductors and capacitors, and ultimately, a more compact and power-dense final product.

Housed in a space-saving 8-pin SOIC package, the FDMC86116LZ offers an excellent footprint-to-performance ratio. This package is not only designed for efficient thermal management but also provides improved board-level reliability. Furthermore, the MOSFET features enhanced avalanche ruggedness, providing an additional layer of robustness against voltage spikes and unpredictable transient events commonly encountered in real-world power circuits, thereby improving system longevity and reliability.

Typical applications where the FDMC86116LZ excels include:

Synchronous rectification in switch-mode power supplies (SMPS).

Primary side switching in high-current DC-DC converters.

Motor control and driving circuits for industrial systems.

OR-ing and hot-swap functionalities in enterprise computing.

ICGOODFIND: The onsemi FDMC86116LZ is a superior PowerTrench MOSFET that masterfully combines ultra-low on-resistance and minimized switching losses. This synergy makes it an indispensable component for engineers aiming to maximize efficiency, increase power density, and enhance the overall reliability of their power conversion designs in a market that constantly demands more power in smaller spaces.

Keywords: PowerTrench MOSFET, Low RDS(ON), High-Efficiency Power Conversion, Low Gate Charge, Synchronous Rectification