Redesigned MOSFET Provides Electrical Power Requirements for Data Centers
In the rapidly evolving world of power supply units (PSUs) for AI servers, a significant shift towards compact, high-power, highly efficient, and reliable solutions is underway. This transformation is driven by the escalating power demands of AI workloads and the need for efficient power management.
One of the key innovations in this space is the new power MOSFET, the AONK40202, released by Alpha and Omega Semiconductor. This device, designed for high-power density in DC-DC applications, leverages advanced "source-down" packaging technology to reduce power losses and enhance heat dissipation.
The source-down packaging places the active side of the power device closer to the Printed Circuit Board (PCB), enabling a larger silicon chip in the same package area. This results in a power MOSFET that can manage more than 300 A of continuous current at 25°C and more than 220 A at 100°C. The heat is dissipated directly into the PCB through a thermal pad on the package, ensuring efficient heat management.
The AONK40202 also boasts a center gate pin configuration, which eases routing on the PCB and reduces the distance between the gate driver and the power transistor. Moreover, the device uses 3.3- × 3.3-mm DFN source-down packaging technology, with the dual flat no-lead (DFN) configuration allowing for a larger source contact to the PCB, further improving heat dissipation.
The larger die in the AONK40202 reduces the on-resistance (R) of the FET, leading to higher efficiency and power density. The power MOSFET has a maximum R of 0.7 mΩ at 10 V, significantly reducing conduction losses.
Peter H. Wilson, senior director of MOSFET products at AOS, stated that the AONK40202 is designed to meet the mounting power demands of AI. The device is intended for use in AI servers and data center power-distribution systems, offering a promising solution for the high-power, high-density PSU market.
The pricing for the AONK40202 starts at $1.65 in 1,000-unit quantities, making it an accessible option for data center operators looking to upgrade their power supply systems.
As the trend towards compact, high-power, highly efficient, and reliable PSUs and power management systems continues, innovations such as the AONK40202 are set to play a crucial role in enabling AI servers to operate at extremely high power densities with minimal conversion losses, advanced protection features, and thermal management. This involves leveraging wide bandgap semiconductors, synchronous rectification, advanced hot-swap controllers, and higher voltage architectures for efficient DC-DC power conversion and power path protection, all tailored for the unique demands of AI workloads and hyper-scale data centers.
- The new power MOSFET, the AONK40202, from Alpha and Omega Semiconductor, is a significant technology advancement in the power electronics sector, designed specifically to meet the escalating power demands of AI workloads and data center power-distribution systems.
- In the evolving world of power supply units (PSUs) for AI servers, the AONK40202, with its compact design, high power handling capacity, and efficient heat management, is a valuable technology that contributes to the shift towards compact, high-power, highly efficient, and reliable PSU solutions.
